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Mercury_7267890 | Why is some food dehydrated for astronauts to eat in space? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"to make the food less messy to eat",
"to preserve the food for extended flights",
"to increase the food's nutritional content",
"to keep the food from floating off the plate"
]
} | B | Question: Why is some food dehydrated for astronauts to eat in space?
(A) to make the food less messy to eat
(B) to preserve the food for extended flights
(C) to increase the food's nutritional content
(D) to keep the food from floating off the plate
| Answer: (B) to preserve the food for extended flights | Answer: (C) to increase the food's nutritional content | Question: Why is some food dehydrated for astronauts to eat in space?
(A) to make the food less messy to eat
(B) to preserve the food for extended flights
(C) to increase the food's nutritional content
(D) to keep the food from floating off the plate
Answer: (B) to preserve the food for extended flights |
MCAS_2006_9_15 | Perfume sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C. Which of the following correctly compares perfume molecules at 25°C to those at 15°C? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"At 25°C, they have more mass.",
"At 25°C, they are moving faster.",
"At 25°C, they have less kinetic energy.",
"At 25°C, they are decreasing in volume."
]
} | B | Question: Perfume sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C. Which of the following correctly compares perfume molecules at 25°C to those at 15°C?
(A) At 25°C, they have more mass.
(B) At 25°C, they are moving faster.
(C) At 25°C, they have less kinetic energy.
(D) At 25°C, they are decreasing in volume.
| Answer: (B) At 25°C, they are moving faster. | Answer: (A) At 25°C, they have more mass. | Question: Perfume sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C. Which of the following correctly compares perfume molecules at 25°C to those at 15°C?
(A) At 25°C, they have more mass.
(B) At 25°C, they are moving faster.
(C) At 25°C, they have less kinetic energy.
(D) At 25°C, they are decreasing in volume.
Answer: (B) At 25°C, they are moving faster. |
Mercury_182123 | Which of the following is believed to be one cause of global warming? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"atmospheric rise of carbon dioxide",
"hot air from air conditioner exhaust",
"methane gas escaping from landfills",
"body heat generated by overpopulation"
]
} | A | Question: Which of the following is believed to be one cause of global warming?
(A) atmospheric rise of carbon dioxide
(B) hot air from air conditioner exhaust
(C) methane gas escaping from landfills
(D) body heat generated by overpopulation
| Answer: (A) atmospheric rise of carbon dioxide | Answer: (B) hot air from air conditioner exhaust | Question: Which of the following is believed to be one cause of global warming?
(A) atmospheric rise of carbon dioxide
(B) hot air from air conditioner exhaust
(C) methane gas escaping from landfills
(D) body heat generated by overpopulation
Answer: (A) atmospheric rise of carbon dioxide |
Mercury_SC_402285 | What product was being formed as plants died and sank to the bottom of swamps? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"oil",
"gas",
"coal",
"shale"
]
} | C | Question: What product was being formed as plants died and sank to the bottom of swamps?
(A) oil
(B) gas
(C) coal
(D) shale
| Answer: (C) coal | Answer: (D) shale | Question: What product was being formed as plants died and sank to the bottom of swamps?
(A) oil
(B) gas
(C) coal
(D) shale
Answer: (C) coal |
Mercury_SC_400176 | What is the approximate length of time it takes the Moon to complete one lunar cycle? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"14 days",
"29 days",
"180 days",
"365 days"
]
} | B | Question: What is the approximate length of time it takes the Moon to complete one lunar cycle?
(A) 14 days
(B) 29 days
(C) 180 days
(D) 365 days
| Answer: (B) 29 days | Answer: (D) 365 days | Question: What is the approximate length of time it takes the Moon to complete one lunar cycle?
(A) 14 days
(B) 29 days
(C) 180 days
(D) 365 days
Answer: (B) 29 days |
Mercury_7206360 | A line graph is best used when the measured variable is | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"changing at a constant rate.",
"nearly equal in several trials.",
"being compared to a control.",
"observed at one point in time."
]
} | A | Question: A line graph is best used when the measured variable is
(A) changing at a constant rate.
(B) nearly equal in several trials.
(C) being compared to a control.
(D) observed at one point in time.
| Answer: (A) changing at a constant rate. | Answer: (D) observed at one point in time. | Question: A line graph is best used when the measured variable is
(A) changing at a constant rate.
(B) nearly equal in several trials.
(C) being compared to a control.
(D) observed at one point in time.
Answer: (A) changing at a constant rate. |
MDSA_2008_5_28 | All living things need energy to survive. What is the primary source of energy for all living things? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"plants",
"the sun",
"water",
"the wind"
]
} | B | Question: All living things need energy to survive. What is the primary source of energy for all living things?
(A) plants
(B) the sun
(C) water
(D) the wind
| Answer: (B) the sun | Answer: (A) plants | Question: All living things need energy to survive. What is the primary source of energy for all living things?
(A) plants
(B) the sun
(C) water
(D) the wind
Answer: (B) the sun |
NCEOGA_2013_8_23 | If a chemical reaction such as photosynthesis begins with 6 atoms of carbon [C], how many atoms of carbon [C] should be in the products? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"12 atoms of carbon [C]",
"6 atoms of carbon [C]",
"3 atoms of carbon [C]",
"2 atoms of carbon [C]"
]
} | B | Question: If a chemical reaction such as photosynthesis begins with 6 atoms of carbon [C], how many atoms of carbon [C] should be in the products?
(A) 12 atoms of carbon [C]
(B) 6 atoms of carbon [C]
(C) 3 atoms of carbon [C]
(D) 2 atoms of carbon [C]
| Answer: (B) 6 atoms of carbon [C] | Answer: (C) 3 atoms of carbon [C] | Question: If a chemical reaction such as photosynthesis begins with 6 atoms of carbon [C], how many atoms of carbon [C] should be in the products?
(A) 12 atoms of carbon [C]
(B) 6 atoms of carbon [C]
(C) 3 atoms of carbon [C]
(D) 2 atoms of carbon [C]
Answer: (B) 6 atoms of carbon [C] |
Mercury_SC_401167 | Which object refracts light? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"mirror",
"silver spoon",
"foil",
"glass prism"
]
} | D | Question: Which object refracts light?
(A) mirror
(B) silver spoon
(C) foil
(D) glass prism
| Answer: (D) glass prism | Answer: (A) mirror | Question: Which object refracts light?
(A) mirror
(B) silver spoon
(C) foil
(D) glass prism
Answer: (D) glass prism |
Mercury_7213693 | A gastroenterologist is a doctor who treats problems of the esophagus, stomach, and intestines. Which organ system is cared for by this type of doctor? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"circulatory system",
"muscular system",
"digestive system",
"nervous system"
]
} | C | Question: A gastroenterologist is a doctor who treats problems of the esophagus, stomach, and intestines. Which organ system is cared for by this type of doctor?
(A) circulatory system
(B) muscular system
(C) digestive system
(D) nervous system
| Answer: (C) digestive system | Answer: (A) circulatory system | Question: A gastroenterologist is a doctor who treats problems of the esophagus, stomach, and intestines. Which organ system is cared for by this type of doctor?
(A) circulatory system
(B) muscular system
(C) digestive system
(D) nervous system
Answer: (C) digestive system |
Mercury_7267558 | Which event becomes more likely during a drought in a prairie ecosystem? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"fire",
"tornado",
"landslide",
"earthquake"
]
} | A | Question: Which event becomes more likely during a drought in a prairie ecosystem?
(A) fire
(B) tornado
(C) landslide
(D) earthquake
| Answer: (A) fire | Answer: (B) tornado | Question: Which event becomes more likely during a drought in a prairie ecosystem?
(A) fire
(B) tornado
(C) landslide
(D) earthquake
Answer: (A) fire |
Mercury_7081235 | When scientists publish papers describing the results and conclusions of their experiments, members of the scientific community should | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"collect their own data and rewrite the paper.",
"evaluate the evidence in the paper.",
"accept the paper as fact.",
"ask the writer to write an alternate paper."
]
} | B | Question: When scientists publish papers describing the results and conclusions of their experiments, members of the scientific community should
(A) collect their own data and rewrite the paper.
(B) evaluate the evidence in the paper.
(C) accept the paper as fact.
(D) ask the writer to write an alternate paper.
| Answer: (B) evaluate the evidence in the paper. | Answer: (C) accept the paper as fact. | Question: When scientists publish papers describing the results and conclusions of their experiments, members of the scientific community should
(A) collect their own data and rewrite the paper.
(B) evaluate the evidence in the paper.
(C) accept the paper as fact.
(D) ask the writer to write an alternate paper.
Answer: (B) evaluate the evidence in the paper. |
Mercury_SC_408290 | Kim lost her hammer outside. When she found it a few months later, some parts of the metal were covered with flaky, brown rust. Which type of change occurred when rust formed on the hammer? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"chemical",
"electrical",
"thermal",
"physical"
]
} | A | Question: Kim lost her hammer outside. When she found it a few months later, some parts of the metal were covered with flaky, brown rust. Which type of change occurred when rust formed on the hammer?
(A) chemical
(B) electrical
(C) thermal
(D) physical
| Answer: (A) chemical | Answer: (D) physical | Question: Kim lost her hammer outside. When she found it a few months later, some parts of the metal were covered with flaky, brown rust. Which type of change occurred when rust formed on the hammer?
(A) chemical
(B) electrical
(C) thermal
(D) physical
Answer: (A) chemical |
Mercury_7032918 | Which human activity has most negatively affected air quality? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"burning coal",
"growing crops",
"using solar energy cells",
"constructing nuclear power plants"
]
} | A | Question: Which human activity has most negatively affected air quality?
(A) burning coal
(B) growing crops
(C) using solar energy cells
(D) constructing nuclear power plants
| Answer: (A) burning coal | Answer: (D) constructing nuclear power plants | Question: Which human activity has most negatively affected air quality?
(A) burning coal
(B) growing crops
(C) using solar energy cells
(D) constructing nuclear power plants
Answer: (A) burning coal |
MCAS_2009_8_7 | Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"consumers",
"decomposers",
"predators",
"producers"
]
} | B | Question: Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms?
(A) consumers
(B) decomposers
(C) predators
(D) producers
| Answer: (B) decomposers | Answer: (D) producers | Question: Most of the bacteria in a forest ecosystem are best classified as which of the following types of organisms?
(A) consumers
(B) decomposers
(C) predators
(D) producers
Answer: (B) decomposers |
NCEOGA_2013_5_41 | A pencil falls off of a desk. What moves the pencil toward the floor? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"mass",
"friction",
"gravity",
"speed"
]
} | C | Question: A pencil falls off of a desk. What moves the pencil toward the floor?
(A) mass
(B) friction
(C) gravity
(D) speed
| Answer: (C) gravity | Answer: (A) mass | Question: A pencil falls off of a desk. What moves the pencil toward the floor?
(A) mass
(B) friction
(C) gravity
(D) speed
Answer: (C) gravity |
MCAS_2006_5_8 | All of the processes listed below cause changes in Earth's surface. Which of the following is the slowest to change Earth's surface? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"earthquake activity",
"landslide",
"volcanic eruption",
"weathering"
]
} | D | Question: All of the processes listed below cause changes in Earth's surface. Which of the following is the slowest to change Earth's surface?
(A) earthquake activity
(B) landslide
(C) volcanic eruption
(D) weathering
| Answer: (D) weathering | Answer: (B) landslide | Question: All of the processes listed below cause changes in Earth's surface. Which of the following is the slowest to change Earth's surface?
(A) earthquake activity
(B) landslide
(C) volcanic eruption
(D) weathering
Answer: (D) weathering |
VASoL_2007_5_18 | A group of students was preparing an activity to determine whether certain materials will float or sink when placed on water. Before the experiment started, one student said, "I think the sponge will float." This statement was | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a conclusion",
"a fact",
"an observation",
"a prediction"
]
} | D | Question: A group of students was preparing an activity to determine whether certain materials will float or sink when placed on water. Before the experiment started, one student said, "I think the sponge will float." This statement was
(A) a conclusion
(B) a fact
(C) an observation
(D) a prediction
| Answer: (D) a prediction | Answer: (A) a conclusion | Question: A group of students was preparing an activity to determine whether certain materials will float or sink when placed on water. Before the experiment started, one student said, "I think the sponge will float." This statement was
(A) a conclusion
(B) a fact
(C) an observation
(D) a prediction
Answer: (D) a prediction |
VASoL_2009_5_33 | What tool is used to determine the mass of an object? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Balance",
"Meter stick",
"Thermometer",
"Graduated cylinder"
]
} | A | Question: What tool is used to determine the mass of an object?
(A) Balance
(B) Meter stick
(C) Thermometer
(D) Graduated cylinder
| Answer: (A) Balance | Answer: (B) Meter stick | Question: What tool is used to determine the mass of an object?
(A) Balance
(B) Meter stick
(C) Thermometer
(D) Graduated cylinder
Answer: (A) Balance |
Mercury_7034860 | According to the Periodic Table of the Elements, mercury (Hg) is different from other metals because mercury is | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"solid at room temperature.",
"liquid at room temperature.",
"lighter than all other metals.",
"heavier than all other metals."
]
} | B | Question: According to the Periodic Table of the Elements, mercury (Hg) is different from other metals because mercury is
(A) solid at room temperature.
(B) liquid at room temperature.
(C) lighter than all other metals.
(D) heavier than all other metals.
| Answer: (B) liquid at room temperature. | Answer: (A) solid at room temperature. | Question: According to the Periodic Table of the Elements, mercury (Hg) is different from other metals because mercury is
(A) solid at room temperature.
(B) liquid at room temperature.
(C) lighter than all other metals.
(D) heavier than all other metals.
Answer: (B) liquid at room temperature. |
Mercury_7016713 | When using more than the recommended amounts of pesticide on farmland, yards, and gardens, what is most likely to occur? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Higher levels of pesticide may be less effective.",
"The pesticides may break down quickly.",
"Water supplies can be contaminated by pesticide runoff.",
"The pesticide will increase the plant production."
]
} | C | Question: When using more than the recommended amounts of pesticide on farmland, yards, and gardens, what is most likely to occur?
(A) Higher levels of pesticide may be less effective.
(B) The pesticides may break down quickly.
(C) Water supplies can be contaminated by pesticide runoff.
(D) The pesticide will increase the plant production.
| Answer: (C) Water supplies can be contaminated by pesticide runoff. | Answer: (A) Higher levels of pesticide may be less effective. | Question: When using more than the recommended amounts of pesticide on farmland, yards, and gardens, what is most likely to occur?
(A) Higher levels of pesticide may be less effective.
(B) The pesticides may break down quickly.
(C) Water supplies can be contaminated by pesticide runoff.
(D) The pesticide will increase the plant production.
Answer: (C) Water supplies can be contaminated by pesticide runoff. |
Mercury_7241098 | According to the fossil record, when did episodes of rapid speciation commonly take place? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"while Earth's continents were joined",
"while Earth's habitats were stable",
"before major climatic changes",
"following mass extinctions"
]
} | D | Question: According to the fossil record, when did episodes of rapid speciation commonly take place?
(A) while Earth's continents were joined
(B) while Earth's habitats were stable
(C) before major climatic changes
(D) following mass extinctions
| Answer: (D) following mass extinctions | Answer: (C) before major climatic changes | Question: According to the fossil record, when did episodes of rapid speciation commonly take place?
(A) while Earth's continents were joined
(B) while Earth's habitats were stable
(C) before major climatic changes
(D) following mass extinctions
Answer: (D) following mass extinctions |
Mercury_SC_408656 | A deer inherits some of its features from its parents. Other features come from its environment. Which feature would a deer most likely inherit from its parents? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a long scar",
"brown eyes",
"missing teeth",
"a broken antler"
]
} | B | Question: A deer inherits some of its features from its parents. Other features come from its environment. Which feature would a deer most likely inherit from its parents?
(A) a long scar
(B) brown eyes
(C) missing teeth
(D) a broken antler
| Answer: (B) brown eyes | Answer: (C) missing teeth | Question: A deer inherits some of its features from its parents. Other features come from its environment. Which feature would a deer most likely inherit from its parents?
(A) a long scar
(B) brown eyes
(C) missing teeth
(D) a broken antler
Answer: (B) brown eyes |
ACTAAP_2008_7_12 | What is the smallest structural and functional unit of the nervous system? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"brain",
"organ",
"neuron",
"spinal cord"
]
} | C | Question: What is the smallest structural and functional unit of the nervous system?
(A) brain
(B) organ
(C) neuron
(D) spinal cord
| Answer: (C) neuron | Answer: (A) brain | Question: What is the smallest structural and functional unit of the nervous system?
(A) brain
(B) organ
(C) neuron
(D) spinal cord
Answer: (C) neuron |
Mercury_182438 | Male peacocks have large brightly colored tail feathers. What is the most likely reason for this? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"to attract potential mates",
"to distract potential predators",
"to help catch food",
"to preserve warmth"
]
} | A | Question: Male peacocks have large brightly colored tail feathers. What is the most likely reason for this?
(A) to attract potential mates
(B) to distract potential predators
(C) to help catch food
(D) to preserve warmth
| Answer: (A) to attract potential mates | Answer: (B) to distract potential predators | Question: Male peacocks have large brightly colored tail feathers. What is the most likely reason for this?
(A) to attract potential mates
(B) to distract potential predators
(C) to help catch food
(D) to preserve warmth
Answer: (A) to attract potential mates |
MCAS_2005_5_16 | In a city, the daily high and low 16 temperatures for a month are best represented by which of the following? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"flow chart",
"line graph",
"pictograph",
"pie chart"
]
} | B | Question: In a city, the daily high and low 16 temperatures for a month are best represented by which of the following?
(A) flow chart
(B) line graph
(C) pictograph
(D) pie chart
| Answer: (B) line graph | Answer: (A) flow chart | Question: In a city, the daily high and low 16 temperatures for a month are best represented by which of the following?
(A) flow chart
(B) line graph
(C) pictograph
(D) pie chart
Answer: (B) line graph |
Mercury_7159198 | Drew was measuring the growth of a vine that can grow almost 31 cm a day. Which would be the best way to record his data of the growth over a period of a day? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a bar graph",
"a line graph",
"a pie graph",
"a picture graph"
]
} | B | Question: Drew was measuring the growth of a vine that can grow almost 31 cm a day. Which would be the best way to record his data of the growth over a period of a day?
(A) a bar graph
(B) a line graph
(C) a pie graph
(D) a picture graph
| Answer: (B) a line graph | Answer: (D) a picture graph | Question: Drew was measuring the growth of a vine that can grow almost 31 cm a day. Which would be the best way to record his data of the growth over a period of a day?
(A) a bar graph
(B) a line graph
(C) a pie graph
(D) a picture graph
Answer: (B) a line graph |
Mercury_7216230 | All of the following are functions of a cell membrane except | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"surrounding and protecting the contents of the cell.",
"releasing waste products from the cell.",
"producing energy for cell processes.",
"allowing gases to enter the cell."
]
} | C | Question: All of the following are functions of a cell membrane except
(A) surrounding and protecting the contents of the cell.
(B) releasing waste products from the cell.
(C) producing energy for cell processes.
(D) allowing gases to enter the cell.
| Answer: (C) producing energy for cell processes. | Answer: (B) releasing waste products from the cell. | Question: All of the following are functions of a cell membrane except
(A) surrounding and protecting the contents of the cell.
(B) releasing waste products from the cell.
(C) producing energy for cell processes.
(D) allowing gases to enter the cell.
Answer: (C) producing energy for cell processes. |
Mercury_401597 | Which characteristic will a baby chimpanzee inherit from its parents? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"fur color",
"hunting skills",
"feeding behavior",
"sleeping routine"
]
} | A | Question: Which characteristic will a baby chimpanzee inherit from its parents?
(A) fur color
(B) hunting skills
(C) feeding behavior
(D) sleeping routine
| Answer: (A) fur color | Answer: (B) hunting skills | Question: Which characteristic will a baby chimpanzee inherit from its parents?
(A) fur color
(B) hunting skills
(C) feeding behavior
(D) sleeping routine
Answer: (A) fur color |
NYSEDREGENTS_2004_4_6 | Which object is the best conductor of electricity? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a wax crayon",
"a plastic spoon",
"a rubber eraser",
"an iron nail"
]
} | D | Question: Which object is the best conductor of electricity?
(A) a wax crayon
(B) a plastic spoon
(C) a rubber eraser
(D) an iron nail
| Answer: (D) an iron nail | Answer: (A) a wax crayon | Question: Which object is the best conductor of electricity?
(A) a wax crayon
(B) a plastic spoon
(C) a rubber eraser
(D) an iron nail
Answer: (D) an iron nail |
MCAS_2001_5_17 | Why are some rocks smoother and rounder than others? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"They have the shapes of the minerals from which they are made.",
"They were smoothed by the action of wind and water.",
"They were squeezed up through the soil.",
"They hardened in rounded pockets of soil."
]
} | B | Question: Why are some rocks smoother and rounder than others?
(A) They have the shapes of the minerals from which they are made.
(B) They were smoothed by the action of wind and water.
(C) They were squeezed up through the soil.
(D) They hardened in rounded pockets of soil.
| Answer: (B) They were smoothed by the action of wind and water. | Answer: (C) They were squeezed up through the soil. | Question: Why are some rocks smoother and rounder than others?
(A) They have the shapes of the minerals from which they are made.
(B) They were smoothed by the action of wind and water.
(C) They were squeezed up through the soil.
(D) They hardened in rounded pockets of soil.
Answer: (B) They were smoothed by the action of wind and water. |
Mercury_SC_408861 | A vaccine can prevent a serious disease. When a new vaccine is developed, it is given to a small group of people. Why would it be important to test each vaccine on a small group of people before everyone can have one? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"to figure out how much the vaccine is worth",
"to determine how the vaccine will affect people",
"to understand how that disease affects the human body",
"to find out how many people are affected by the disease"
]
} | B | Question: A vaccine can prevent a serious disease. When a new vaccine is developed, it is given to a small group of people. Why would it be important to test each vaccine on a small group of people before everyone can have one?
(A) to figure out how much the vaccine is worth
(B) to determine how the vaccine will affect people
(C) to understand how that disease affects the human body
(D) to find out how many people are affected by the disease
| Answer: (B) to determine how the vaccine will affect people | Answer: (D) to find out how many people are affected by the disease | Question: A vaccine can prevent a serious disease. When a new vaccine is developed, it is given to a small group of people. Why would it be important to test each vaccine on a small group of people before everyone can have one?
(A) to figure out how much the vaccine is worth
(B) to determine how the vaccine will affect people
(C) to understand how that disease affects the human body
(D) to find out how many people are affected by the disease
Answer: (B) to determine how the vaccine will affect people |
Mercury_SC_415423 | When can producers make the most food? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"summer, because there is more sunlight",
"summer, because there is more heat",
"spring, because there is more rain",
"spring, because there are more leaves"
]
} | A | Question: When can producers make the most food?
(A) summer, because there is more sunlight
(B) summer, because there is more heat
(C) spring, because there is more rain
(D) spring, because there are more leaves
| Answer: (A) summer, because there is more sunlight | Answer: (B) summer, because there is more heat | Question: When can producers make the most food?
(A) summer, because there is more sunlight
(B) summer, because there is more heat
(C) spring, because there is more rain
(D) spring, because there are more leaves
Answer: (A) summer, because there is more sunlight |
Mercury_SC_409583 | Plants have special tissues that transport food, water, and minerals throughout the plant. What are these tissues similar to in animals? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"stomach and intestines",
"spinal cord and brain",
"arteries and veins",
"kidneys and liver"
]
} | C | Question: Plants have special tissues that transport food, water, and minerals throughout the plant. What are these tissues similar to in animals?
(A) stomach and intestines
(B) spinal cord and brain
(C) arteries and veins
(D) kidneys and liver
| Answer: (C) arteries and veins | Answer: (D) kidneys and liver | Question: Plants have special tissues that transport food, water, and minerals throughout the plant. What are these tissues similar to in animals?
(A) stomach and intestines
(B) spinal cord and brain
(C) arteries and veins
(D) kidneys and liver
Answer: (C) arteries and veins |
MCAS_2015_5_4 | Which of the following statements best explains how the decomposition of plant and animal matter helps to form rich soils? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Decomposition adds silt to soil.",
"Decomposition adds water to soil.",
"Decomposition adds oxygen to soil.",
"Decomposition adds nutrients to soil."
]
} | D | Question: Which of the following statements best explains how the decomposition of plant and animal matter helps to form rich soils?
(A) Decomposition adds silt to soil.
(B) Decomposition adds water to soil.
(C) Decomposition adds oxygen to soil.
(D) Decomposition adds nutrients to soil.
| Answer: (D) Decomposition adds nutrients to soil. | Answer: (B) Decomposition adds water to soil. | Question: Which of the following statements best explains how the decomposition of plant and animal matter helps to form rich soils?
(A) Decomposition adds silt to soil.
(B) Decomposition adds water to soil.
(C) Decomposition adds oxygen to soil.
(D) Decomposition adds nutrients to soil.
Answer: (D) Decomposition adds nutrients to soil. |
NAEP_2000_4_S21+3 | Beans and coal both have stored energy. Where did the energy come from that is stored in beans and coal? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"From the Earth's gravity",
"From the Sun's light",
"From the heat in the Earth's core",
"From the air's carbon dioxide"
]
} | B | Question: Beans and coal both have stored energy. Where did the energy come from that is stored in beans and coal?
(A) From the Earth's gravity
(B) From the Sun's light
(C) From the heat in the Earth's core
(D) From the air's carbon dioxide
| Answer: (B) From the Sun's light | Answer: (A) From the Earth's gravity | Question: Beans and coal both have stored energy. Where did the energy come from that is stored in beans and coal?
(A) From the Earth's gravity
(B) From the Sun's light
(C) From the heat in the Earth's core
(D) From the air's carbon dioxide
Answer: (B) From the Sun's light |
Mercury_7234693 | A metal ball has a constant velocity of zero. Which other quantity must also be zero? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"weight of the ball",
"energy of the ball",
"acceleration of the ball",
"inertia of the ball"
]
} | C | Question: A metal ball has a constant velocity of zero. Which other quantity must also be zero?
(A) weight of the ball
(B) energy of the ball
(C) acceleration of the ball
(D) inertia of the ball
| Answer: (C) acceleration of the ball | Answer: (D) inertia of the ball | Question: A metal ball has a constant velocity of zero. Which other quantity must also be zero?
(A) weight of the ball
(B) energy of the ball
(C) acceleration of the ball
(D) inertia of the ball
Answer: (C) acceleration of the ball |
Mercury_7043855 | What geographic obstacle causes water to condense in an air mass as the air mass moves? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"forests",
"oceans",
"prairies",
"mountains"
]
} | D | Question: What geographic obstacle causes water to condense in an air mass as the air mass moves?
(A) forests
(B) oceans
(C) prairies
(D) mountains
| Answer: (D) mountains | Answer: (B) oceans | Question: What geographic obstacle causes water to condense in an air mass as the air mass moves?
(A) forests
(B) oceans
(C) prairies
(D) mountains
Answer: (D) mountains |
NYSEDREGENTS_2007_4_1 | If an object is attracted to a magnet, the object is most likely made of | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"wood",
"plastic",
"cardboard",
"metal"
]
} | D | Question: If an object is attracted to a magnet, the object is most likely made of
(A) wood
(B) plastic
(C) cardboard
(D) metal
| Answer: (D) metal | Answer: (B) plastic | Question: If an object is attracted to a magnet, the object is most likely made of
(A) wood
(B) plastic
(C) cardboard
(D) metal
Answer: (D) metal |
OHAT_2011_5_33 | Which explains the pattern of day and night? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Earth orbits the sun.",
"Earth spins on its axis.",
"The sun only transmits light energy during the daytime.",
"The sun only transmits light energy above the equator."
]
} | B | Question: Which explains the pattern of day and night?
(A) Earth orbits the sun.
(B) Earth spins on its axis.
(C) The sun only transmits light energy during the daytime.
(D) The sun only transmits light energy above the equator.
| Answer: (B) Earth spins on its axis. | Answer: (A) Earth orbits the sun. | Question: Which explains the pattern of day and night?
(A) Earth orbits the sun.
(B) Earth spins on its axis.
(C) The sun only transmits light energy during the daytime.
(D) The sun only transmits light energy above the equator.
Answer: (B) Earth spins on its axis. |
Mercury_405064 | Which is the best plan to make the fossil fuel supply last longer? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"mine more coal",
"reduce car pollution",
"produce more gasoline",
"reduce electricity use"
]
} | D | Question: Which is the best plan to make the fossil fuel supply last longer?
(A) mine more coal
(B) reduce car pollution
(C) produce more gasoline
(D) reduce electricity use
| Answer: (D) reduce electricity use | Answer: (B) reduce car pollution | Question: Which is the best plan to make the fossil fuel supply last longer?
(A) mine more coal
(B) reduce car pollution
(C) produce more gasoline
(D) reduce electricity use
Answer: (D) reduce electricity use |
Mercury_7180338 | The stages of evolution of a star are determined by the mass of the star at the beginning of its life cycle. Which stage of evolution is the oldest form of a massive star? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"red giant",
"supernova",
"neutron star",
"white dwarf"
]
} | C | Question: The stages of evolution of a star are determined by the mass of the star at the beginning of its life cycle. Which stage of evolution is the oldest form of a massive star?
(A) red giant
(B) supernova
(C) neutron star
(D) white dwarf
| Answer: (C) neutron star | Answer: (B) supernova | Question: The stages of evolution of a star are determined by the mass of the star at the beginning of its life cycle. Which stage of evolution is the oldest form of a massive star?
(A) red giant
(B) supernova
(C) neutron star
(D) white dwarf
Answer: (C) neutron star |
Mercury_7206080 | Which of these best indicates that sediments can be changed into rock? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"layers of sandstone",
"igneous intrusions",
"lava beds",
"mountains with gneiss"
]
} | A | Question: Which of these best indicates that sediments can be changed into rock?
(A) layers of sandstone
(B) igneous intrusions
(C) lava beds
(D) mountains with gneiss
| Answer: (A) layers of sandstone | Answer: (C) lava beds | Question: Which of these best indicates that sediments can be changed into rock?
(A) layers of sandstone
(B) igneous intrusions
(C) lava beds
(D) mountains with gneiss
Answer: (A) layers of sandstone |
Mercury_7234570 | Carbon cycles through several Earth subsystems. Which sequence most directly leads to the cycling of carbon that can result in the formation of petroleum? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"biosphere to lithosphere",
"atmosphere to lithosphere",
"hydrosphere to atmosphere",
"biosphere to atmosphere"
]
} | A | Question: Carbon cycles through several Earth subsystems. Which sequence most directly leads to the cycling of carbon that can result in the formation of petroleum?
(A) biosphere to lithosphere
(B) atmosphere to lithosphere
(C) hydrosphere to atmosphere
(D) biosphere to atmosphere
| Answer: (A) biosphere to lithosphere | Answer: (B) atmosphere to lithosphere | Question: Carbon cycles through several Earth subsystems. Which sequence most directly leads to the cycling of carbon that can result in the formation of petroleum?
(A) biosphere to lithosphere
(B) atmosphere to lithosphere
(C) hydrosphere to atmosphere
(D) biosphere to atmosphere
Answer: (A) biosphere to lithosphere |
Mercury_7234640 | Which word best describes the speed of a cart that has a positive velocity and a negative acceleration? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"slow",
"fast",
"decreasing",
"increasing"
]
} | C | Question: Which word best describes the speed of a cart that has a positive velocity and a negative acceleration?
(A) slow
(B) fast
(C) decreasing
(D) increasing
| Answer: (C) decreasing | Answer: (A) slow | Question: Which word best describes the speed of a cart that has a positive velocity and a negative acceleration?
(A) slow
(B) fast
(C) decreasing
(D) increasing
Answer: (C) decreasing |
Mercury_7162645 | A hurricane is a heat engine which converts one kind of energy into another. Hurricanes convert most of the heat energy into | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"chemical energy.",
"electrical energy.",
"mechanical energy.",
"potential energy."
]
} | C | Question: A hurricane is a heat engine which converts one kind of energy into another. Hurricanes convert most of the heat energy into
(A) chemical energy.
(B) electrical energy.
(C) mechanical energy.
(D) potential energy.
| Answer: (C) mechanical energy. | Answer: (D) potential energy. | Question: A hurricane is a heat engine which converts one kind of energy into another. Hurricanes convert most of the heat energy into
(A) chemical energy.
(B) electrical energy.
(C) mechanical energy.
(D) potential energy.
Answer: (C) mechanical energy. |
Mercury_7233450 | Which of the following is a crucial piece of evidence supporting scientists' theory of how the continents and the ocean basins formed? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Gravitational forces result in the fusion of small atoms.",
"A differentiated iron core expresses magnetic properties.",
"Currents redistribute heat in an unevenly heated liquid.",
"A stream of charged ions disperses lightweight gases."
]
} | C | Question: Which of the following is a crucial piece of evidence supporting scientists' theory of how the continents and the ocean basins formed?
(A) Gravitational forces result in the fusion of small atoms.
(B) A differentiated iron core expresses magnetic properties.
(C) Currents redistribute heat in an unevenly heated liquid.
(D) A stream of charged ions disperses lightweight gases.
| Answer: (C) Currents redistribute heat in an unevenly heated liquid. | Answer: (A) Gravitational forces result in the fusion of small atoms. | Question: Which of the following is a crucial piece of evidence supporting scientists' theory of how the continents and the ocean basins formed?
(A) Gravitational forces result in the fusion of small atoms.
(B) A differentiated iron core expresses magnetic properties.
(C) Currents redistribute heat in an unevenly heated liquid.
(D) A stream of charged ions disperses lightweight gases.
Answer: (C) Currents redistribute heat in an unevenly heated liquid. |
NYSEDREGENTS_2007_4_5 | What motion causes day and night? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"revolution of Earth",
"revolution of the Moon",
"rotation of Earth",
"rotation of the Moon"
]
} | C | Question: What motion causes day and night?
(A) revolution of Earth
(B) revolution of the Moon
(C) rotation of Earth
(D) rotation of the Moon
| Answer: (C) rotation of Earth | Answer: (A) revolution of Earth | Question: What motion causes day and night?
(A) revolution of Earth
(B) revolution of the Moon
(C) rotation of Earth
(D) rotation of the Moon
Answer: (C) rotation of Earth |
Mercury_7181580 | The axis of Earth is tilted at an angle of 23.5° from the vertical position. Which of the following is the main result of this tilt? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"tides",
"eclipses",
"length of year",
"change of seasons"
]
} | D | Question: The axis of Earth is tilted at an angle of 23.5° from the vertical position. Which of the following is the main result of this tilt?
(A) tides
(B) eclipses
(C) length of year
(D) change of seasons
| Answer: (D) change of seasons | Answer: (C) length of year | Question: The axis of Earth is tilted at an angle of 23.5° from the vertical position. Which of the following is the main result of this tilt?
(A) tides
(B) eclipses
(C) length of year
(D) change of seasons
Answer: (D) change of seasons |
Mercury_7008978 | In an earthquake, the primary waves move through | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"air",
"water",
"soil",
"rock"
]
} | D | Question: In an earthquake, the primary waves move through
(A) air
(B) water
(C) soil
(D) rock
| Answer: (D) rock | Answer: (C) soil | Question: In an earthquake, the primary waves move through
(A) air
(B) water
(C) soil
(D) rock
Answer: (D) rock |
TIMSS_2011_8_pg87 | Which of the following is the major cause of tides? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"heating of the oceans by the Sun",
"gravitational pull of the Moon",
"earthquakes on the ocean floor",
"changes in wind direction"
]
} | B | Question: Which of the following is the major cause of tides?
(A) heating of the oceans by the Sun
(B) gravitational pull of the Moon
(C) earthquakes on the ocean floor
(D) changes in wind direction
| Answer: (B) gravitational pull of the Moon | Answer: (A) heating of the oceans by the Sun | Question: Which of the following is the major cause of tides?
(A) heating of the oceans by the Sun
(B) gravitational pull of the Moon
(C) earthquakes on the ocean floor
(D) changes in wind direction
Answer: (B) gravitational pull of the Moon |
NYSEDREGENTS_2005_4_12 | A dog opens its mouth and lets its tongue hang out. A human's body produces sweat. These are two ways that organisms may adjust to | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"cold temperatures",
"hot temperatures",
"a shortage of food",
"a shortage of drinking water"
]
} | B | Question: A dog opens its mouth and lets its tongue hang out. A human's body produces sweat. These are two ways that organisms may adjust to
(A) cold temperatures
(B) hot temperatures
(C) a shortage of food
(D) a shortage of drinking water
| Answer: (B) hot temperatures | Answer: (A) cold temperatures | Question: A dog opens its mouth and lets its tongue hang out. A human's body produces sweat. These are two ways that organisms may adjust to
(A) cold temperatures
(B) hot temperatures
(C) a shortage of food
(D) a shortage of drinking water
Answer: (B) hot temperatures |
Mercury_7128590 | Fires in forests from lightning rid the forest of dead branches and leaves. If the trees survive and the soil remains intact, the forest will experience regrowth to its climax state by which process? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"tropism",
"succession",
"gradualism",
"eutrophication"
]
} | B | Question: Fires in forests from lightning rid the forest of dead branches and leaves. If the trees survive and the soil remains intact, the forest will experience regrowth to its climax state by which process?
(A) tropism
(B) succession
(C) gradualism
(D) eutrophication
| Answer: (B) succession | Answer: (A) tropism | Question: Fires in forests from lightning rid the forest of dead branches and leaves. If the trees survive and the soil remains intact, the forest will experience regrowth to its climax state by which process?
(A) tropism
(B) succession
(C) gradualism
(D) eutrophication
Answer: (B) succession |
Mercury_SC_409670 | A class planted trees and shrubs in an empty dirt lot beside the school. The roots of the plants can help protect the soil. The soil is most likely being protected from what? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a drought",
"wind erosion",
"an earthquake",
"water pollution"
]
} | B | Question: A class planted trees and shrubs in an empty dirt lot beside the school. The roots of the plants can help protect the soil. The soil is most likely being protected from what?
(A) a drought
(B) wind erosion
(C) an earthquake
(D) water pollution
| Answer: (B) wind erosion | Answer: (A) a drought | Question: A class planted trees and shrubs in an empty dirt lot beside the school. The roots of the plants can help protect the soil. The soil is most likely being protected from what?
(A) a drought
(B) wind erosion
(C) an earthquake
(D) water pollution
Answer: (B) wind erosion |
Mercury_7064505 | In the process of photosynthesis, sunlight is converted into | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"chemical energy.",
"nuclear energy.",
"mechanical energy.",
"kinetic energy."
]
} | A | Question: In the process of photosynthesis, sunlight is converted into
(A) chemical energy.
(B) nuclear energy.
(C) mechanical energy.
(D) kinetic energy.
| Answer: (A) chemical energy. | Answer: (D) kinetic energy. | Question: In the process of photosynthesis, sunlight is converted into
(A) chemical energy.
(B) nuclear energy.
(C) mechanical energy.
(D) kinetic energy.
Answer: (A) chemical energy. |
Mercury_7268170 | Vascular plants have tissue called xylem. Which of these is transported by the xylem? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"food made by the plant",
"water needed by the plant",
"pollen for plant reproduction",
"carbon dioxide for photosynthesis"
]
} | B | Question: Vascular plants have tissue called xylem. Which of these is transported by the xylem?
(A) food made by the plant
(B) water needed by the plant
(C) pollen for plant reproduction
(D) carbon dioxide for photosynthesis
| Answer: (B) water needed by the plant | Answer: (A) food made by the plant | Question: Vascular plants have tissue called xylem. Which of these is transported by the xylem?
(A) food made by the plant
(B) water needed by the plant
(C) pollen for plant reproduction
(D) carbon dioxide for photosynthesis
Answer: (B) water needed by the plant |
ACTAAP_2009_5_11 | If Lisa wants to experiment with bean plants, which of these is the best example of a hypothesis? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Bean plants come in many types.",
"Fertilizer is good for bean plants.",
"All bean plants are related to each other.",
"Fertilizer will make bean plants grow taller."
]
} | D | Question: If Lisa wants to experiment with bean plants, which of these is the best example of a hypothesis?
(A) Bean plants come in many types.
(B) Fertilizer is good for bean plants.
(C) All bean plants are related to each other.
(D) Fertilizer will make bean plants grow taller.
| Answer: (D) Fertilizer will make bean plants grow taller. | Answer: (B) Fertilizer is good for bean plants. | Question: If Lisa wants to experiment with bean plants, which of these is the best example of a hypothesis?
(A) Bean plants come in many types.
(B) Fertilizer is good for bean plants.
(C) All bean plants are related to each other.
(D) Fertilizer will make bean plants grow taller.
Answer: (D) Fertilizer will make bean plants grow taller. |
Mercury_SC_406071 | A jeweler melts gold to make jewelry. As the gold melts, the mass | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"increases.",
"decreases.",
"is destroyed.",
"stays the same."
]
} | D | Question: A jeweler melts gold to make jewelry. As the gold melts, the mass
(A) increases.
(B) decreases.
(C) is destroyed.
(D) stays the same.
| Answer: (D) stays the same. | Answer: (B) decreases. | Question: A jeweler melts gold to make jewelry. As the gold melts, the mass
(A) increases.
(B) decreases.
(C) is destroyed.
(D) stays the same.
Answer: (D) stays the same. |
MCAS_2007_8_5185 | Which of the following tools is most useful for tightening a small mechanical fastener? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"chisel",
"pliers",
"sander",
"saw"
]
} | B | Question: Which of the following tools is most useful for tightening a small mechanical fastener?
(A) chisel
(B) pliers
(C) sander
(D) saw
| Answer: (B) pliers | Answer: (D) saw | Question: Which of the following tools is most useful for tightening a small mechanical fastener?
(A) chisel
(B) pliers
(C) sander
(D) saw
Answer: (B) pliers |
Mercury_7269115 | Oil, coal, and natural gas are fossil fuels formed under what conditions? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"low temperature and high pressure",
"high temperature and high pressure",
"low temperature and low pressure",
"high temperature and low pressure"
]
} | B | Question: Oil, coal, and natural gas are fossil fuels formed under what conditions?
(A) low temperature and high pressure
(B) high temperature and high pressure
(C) low temperature and low pressure
(D) high temperature and low pressure
| Answer: (B) high temperature and high pressure | Answer: (D) high temperature and low pressure | Question: Oil, coal, and natural gas are fossil fuels formed under what conditions?
(A) low temperature and high pressure
(B) high temperature and high pressure
(C) low temperature and low pressure
(D) high temperature and low pressure
Answer: (B) high temperature and high pressure |
NYSEDREGENTS_2016_4_3 | Some birds build nests in the spring. This nest building is a seasonal adaptation that occurs to help the birds | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"fly south",
"find food",
"protect their young",
"survive the winter"
]
} | C | Question: Some birds build nests in the spring. This nest building is a seasonal adaptation that occurs to help the birds
(A) fly south
(B) find food
(C) protect their young
(D) survive the winter
| Answer: (C) protect their young | Answer: (D) survive the winter | Question: Some birds build nests in the spring. This nest building is a seasonal adaptation that occurs to help the birds
(A) fly south
(B) find food
(C) protect their young
(D) survive the winter
Answer: (C) protect their young |
NYSEDREGENTS_2006_4_5 | Which tool is used to measure the volume of a liquid? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"balance",
"ruler",
"thermometer",
"graduated cylinder"
]
} | D | Question: Which tool is used to measure the volume of a liquid?
(A) balance
(B) ruler
(C) thermometer
(D) graduated cylinder
| Answer: (D) graduated cylinder | Answer: (B) ruler | Question: Which tool is used to measure the volume of a liquid?
(A) balance
(B) ruler
(C) thermometer
(D) graduated cylinder
Answer: (D) graduated cylinder |
NYSEDREGENTS_2004_4_11 | The functions of a plant's roots are to support the plant and | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"make food",
"produce fruit",
"take in water and nutrients",
"aid in germination"
]
} | C | Question: The functions of a plant's roots are to support the plant and
(A) make food
(B) produce fruit
(C) take in water and nutrients
(D) aid in germination
| Answer: (C) take in water and nutrients | Answer: (A) make food | Question: The functions of a plant's roots are to support the plant and
(A) make food
(B) produce fruit
(C) take in water and nutrients
(D) aid in germination
Answer: (C) take in water and nutrients |
Mercury_406730 | All of the inherited traits that are passed to offspring during asexual reproduction come from a single | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"egg.",
"sperm.",
"virus.",
"parent."
]
} | D | Question: All of the inherited traits that are passed to offspring during asexual reproduction come from a single
(A) egg.
(B) sperm.
(C) virus.
(D) parent.
| Answer: (D) parent. | Answer: (B) sperm. | Question: All of the inherited traits that are passed to offspring during asexual reproduction come from a single
(A) egg.
(B) sperm.
(C) virus.
(D) parent.
Answer: (D) parent. |
MCAS_2003_8_3 | What energy transformation occurs when an electric lamp is turned on? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"electrical energy to light and heat energy",
"light energy to electrical and mechanical energy",
"heat energy to electrical and light energy",
"electrical energy to mechanical and heat energy"
]
} | A | Question: What energy transformation occurs when an electric lamp is turned on?
(A) electrical energy to light and heat energy
(B) light energy to electrical and mechanical energy
(C) heat energy to electrical and light energy
(D) electrical energy to mechanical and heat energy
| Answer: (A) electrical energy to light and heat energy | Answer: (C) heat energy to electrical and light energy | Question: What energy transformation occurs when an electric lamp is turned on?
(A) electrical energy to light and heat energy
(B) light energy to electrical and mechanical energy
(C) heat energy to electrical and light energy
(D) electrical energy to mechanical and heat energy
Answer: (A) electrical energy to light and heat energy |
Mercury_7218715 | Which phase change in the atmosphere forms clouds? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"evaporation",
"freezing",
"condensation",
"melting"
]
} | C | Question: Which phase change in the atmosphere forms clouds?
(A) evaporation
(B) freezing
(C) condensation
(D) melting
| Answer: (C) condensation | Answer: (A) evaporation | Question: Which phase change in the atmosphere forms clouds?
(A) evaporation
(B) freezing
(C) condensation
(D) melting
Answer: (C) condensation |
Mercury_7274330 | Where are the most reactive nonmetals located on the periodic table? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"the uppermost complete row of the table",
"the rows at the bottom of the table connecting two sections",
"the column at the far left side of the table",
"the second column from the right side of the table"
]
} | D | Question: Where are the most reactive nonmetals located on the periodic table?
(A) the uppermost complete row of the table
(B) the rows at the bottom of the table connecting two sections
(C) the column at the far left side of the table
(D) the second column from the right side of the table
| Answer: (D) the second column from the right side of the table | Answer: (C) the column at the far left side of the table | Question: Where are the most reactive nonmetals located on the periodic table?
(A) the uppermost complete row of the table
(B) the rows at the bottom of the table connecting two sections
(C) the column at the far left side of the table
(D) the second column from the right side of the table
Answer: (D) the second column from the right side of the table |
Mercury_SC_401808 | Who was a leading authority on continental drift in the early 1900s? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Alfred Wegener",
"Albert Einstein",
"Charles Richter",
"Charles Darwin"
]
} | A | Question: Who was a leading authority on continental drift in the early 1900s?
(A) Alfred Wegener
(B) Albert Einstein
(C) Charles Richter
(D) Charles Darwin
| Answer: (A) Alfred Wegener | Answer: (B) Albert Einstein | Question: Who was a leading authority on continental drift in the early 1900s?
(A) Alfred Wegener
(B) Albert Einstein
(C) Charles Richter
(D) Charles Darwin
Answer: (A) Alfred Wegener |
NYSEDREGENTS_2006_8_3 | In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere? | {
"label": [
"1",
"2",
"3",
"4"
],
"text": [
"hydrogen, helium, and water vapor",
"hydrogen, methane, and ozone",
"carbon dioxide, water vapor, and nitrogen",
"carbon dioxide, methane, and helium"
]
} | 3 | Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?
(1) hydrogen, helium, and water vapor
(2) hydrogen, methane, and ozone
(3) carbon dioxide, water vapor, and nitrogen
(4) carbon dioxide, methane, and helium
| Answer: (3) carbon dioxide, water vapor, and nitrogen | Answer: (4) carbon dioxide, methane, and helium | Question: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?
(1) hydrogen, helium, and water vapor
(2) hydrogen, methane, and ozone
(3) carbon dioxide, water vapor, and nitrogen
(4) carbon dioxide, methane, and helium
Answer: (3) carbon dioxide, water vapor, and nitrogen |
AKDE&ED_2012_4_31 | For many years, people have been curious about the stars. In the past, people have shared what they knew about the stars through stories and drawings. Which pair of tools would be most helpful for people today to gather and share information about stars? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"a notebook and a calculator",
"a telescope and a computer",
"a calculator and a microscope",
"a microscope and a telescope"
]
} | B | Question: For many years, people have been curious about the stars. In the past, people have shared what they knew about the stars through stories and drawings. Which pair of tools would be most helpful for people today to gather and share information about stars?
(A) a notebook and a calculator
(B) a telescope and a computer
(C) a calculator and a microscope
(D) a microscope and a telescope
| Answer: (B) a telescope and a computer | Answer: (D) a microscope and a telescope | Question: For many years, people have been curious about the stars. In the past, people have shared what they knew about the stars through stories and drawings. Which pair of tools would be most helpful for people today to gather and share information about stars?
(A) a notebook and a calculator
(B) a telescope and a computer
(C) a calculator and a microscope
(D) a microscope and a telescope
Answer: (B) a telescope and a computer |
Mercury_7163888 | During a presentation on astronomy, Professor Williams discussed various measurements in space. Which objects was she referring to when she talked about how astronomical units (AU) were determined? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"the Sun and Earth",
"the Moon and Earth",
"the inner and outer planets",
"the Sun and the closest star"
]
} | A | Question: During a presentation on astronomy, Professor Williams discussed various measurements in space. Which objects was she referring to when she talked about how astronomical units (AU) were determined?
(A) the Sun and Earth
(B) the Moon and Earth
(C) the inner and outer planets
(D) the Sun and the closest star
| Answer: (A) the Sun and Earth | Answer: (B) the Moon and Earth | Question: During a presentation on astronomy, Professor Williams discussed various measurements in space. Which objects was she referring to when she talked about how astronomical units (AU) were determined?
(A) the Sun and Earth
(B) the Moon and Earth
(C) the inner and outer planets
(D) the Sun and the closest star
Answer: (A) the Sun and Earth |
NCEOGA_2013_5_54 | As more people have moved to the beach, the sea turtle population has decreased. Which is most likely the cause of this decrease? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"tropical storms",
"increase in predators",
"habitat loss",
"warmer temperatures"
]
} | C | Question: As more people have moved to the beach, the sea turtle population has decreased. Which is most likely the cause of this decrease?
(A) tropical storms
(B) increase in predators
(C) habitat loss
(D) warmer temperatures
| Answer: (C) habitat loss | Answer: (B) increase in predators | Question: As more people have moved to the beach, the sea turtle population has decreased. Which is most likely the cause of this decrease?
(A) tropical storms
(B) increase in predators
(C) habitat loss
(D) warmer temperatures
Answer: (C) habitat loss |
Mercury_SC_400605 | The skin of a chameleon can change colors to help it blend with its surroundings. How would this adaptation most likely help a chameleon survive? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"by scaring predators away from the chameleon",
"by attracting prey animals to the chameleon",
"by sending a signal to other chameleons",
"by helping the chameleon hide from its predators"
]
} | D | Question: The skin of a chameleon can change colors to help it blend with its surroundings. How would this adaptation most likely help a chameleon survive?
(A) by scaring predators away from the chameleon
(B) by attracting prey animals to the chameleon
(C) by sending a signal to other chameleons
(D) by helping the chameleon hide from its predators
| Answer: (D) by helping the chameleon hide from its predators | Answer: (A) by scaring predators away from the chameleon | Question: The skin of a chameleon can change colors to help it blend with its surroundings. How would this adaptation most likely help a chameleon survive?
(A) by scaring predators away from the chameleon
(B) by attracting prey animals to the chameleon
(C) by sending a signal to other chameleons
(D) by helping the chameleon hide from its predators
Answer: (D) by helping the chameleon hide from its predators |
Mercury_7120715 | A student examines a new watch design. The watch has a small solar cell on its face. The main function of the solar cell is to | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"reduce the cost of the watch.",
"provide an energy source for the watch.",
"make the watch more attractive.",
"stop the watch from speeding up."
]
} | B | Question: A student examines a new watch design. The watch has a small solar cell on its face. The main function of the solar cell is to
(A) reduce the cost of the watch.
(B) provide an energy source for the watch.
(C) make the watch more attractive.
(D) stop the watch from speeding up.
| Answer: (B) provide an energy source for the watch. | Answer: (A) reduce the cost of the watch. | Question: A student examines a new watch design. The watch has a small solar cell on its face. The main function of the solar cell is to
(A) reduce the cost of the watch.
(B) provide an energy source for the watch.
(C) make the watch more attractive.
(D) stop the watch from speeding up.
Answer: (B) provide an energy source for the watch. |
MCAS_2008_8_5715 | The presence of which of the following geological features provides the best evidence that glaciers once covered an area? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"wide riverbeds",
"U-shaped valleys",
"underground caves",
"groundwater springs"
]
} | B | Question: The presence of which of the following geological features provides the best evidence that glaciers once covered an area?
(A) wide riverbeds
(B) U-shaped valleys
(C) underground caves
(D) groundwater springs
| Answer: (B) U-shaped valleys | Answer: (A) wide riverbeds | Question: The presence of which of the following geological features provides the best evidence that glaciers once covered an area?
(A) wide riverbeds
(B) U-shaped valleys
(C) underground caves
(D) groundwater springs
Answer: (B) U-shaped valleys |
VASoL_2010_5_24 | Which of these is a way the people of Virginia can help restore a natural ecosystem? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Burn their trash",
"Plant native plants",
"Feed leftover meals to deer",
"Drain automobile oil into the grass"
]
} | B | Question: Which of these is a way the people of Virginia can help restore a natural ecosystem?
(A) Burn their trash
(B) Plant native plants
(C) Feed leftover meals to deer
(D) Drain automobile oil into the grass
| Answer: (B) Plant native plants | Answer: (A) Burn their trash | Question: Which of these is a way the people of Virginia can help restore a natural ecosystem?
(A) Burn their trash
(B) Plant native plants
(C) Feed leftover meals to deer
(D) Drain automobile oil into the grass
Answer: (B) Plant native plants |
Mercury_SC_400029 | A student wants to figure out how many calories are needed to perform various activities. A list of some everyday activities is made, and the number of calories burned during each activity is recorded. Which method is the best way for the student to display and evaluate the information? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"write a paragraph",
"make a line graph",
"develop a formula",
"create a table"
]
} | D | Question: A student wants to figure out how many calories are needed to perform various activities. A list of some everyday activities is made, and the number of calories burned during each activity is recorded. Which method is the best way for the student to display and evaluate the information?
(A) write a paragraph
(B) make a line graph
(C) develop a formula
(D) create a table
| Answer: (D) create a table | Answer: (C) develop a formula | Question: A student wants to figure out how many calories are needed to perform various activities. A list of some everyday activities is made, and the number of calories burned during each activity is recorded. Which method is the best way for the student to display and evaluate the information?
(A) write a paragraph
(B) make a line graph
(C) develop a formula
(D) create a table
Answer: (D) create a table |
Mercury_7086730 | Sedimentary deposits formed from organic material tend to include a high amount of | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"iron.",
"nickel.",
"carbon.",
"silicon."
]
} | C | Question: Sedimentary deposits formed from organic material tend to include a high amount of
(A) iron.
(B) nickel.
(C) carbon.
(D) silicon.
| Answer: (C) carbon. | Answer: (D) silicon. | Question: Sedimentary deposits formed from organic material tend to include a high amount of
(A) iron.
(B) nickel.
(C) carbon.
(D) silicon.
Answer: (C) carbon. |
Mercury_7016100 | According to the Big Bang Theory, which element most likely formed first? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"carbon dioxide",
"hydrogen",
"oxygen",
"nitrogen"
]
} | B | Question: According to the Big Bang Theory, which element most likely formed first?
(A) carbon dioxide
(B) hydrogen
(C) oxygen
(D) nitrogen
| Answer: (B) hydrogen | Answer: (C) oxygen | Question: According to the Big Bang Theory, which element most likely formed first?
(A) carbon dioxide
(B) hydrogen
(C) oxygen
(D) nitrogen
Answer: (B) hydrogen |
Mercury_SC_408364 | Tim and Carla play catch with a ball. Which term describes the motion of a ball? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"shape",
"size",
"speed",
"weight"
]
} | C | Question: Tim and Carla play catch with a ball. Which term describes the motion of a ball?
(A) shape
(B) size
(C) speed
(D) weight
| Answer: (C) speed | Answer: (A) shape | Question: Tim and Carla play catch with a ball. Which term describes the motion of a ball?
(A) shape
(B) size
(C) speed
(D) weight
Answer: (C) speed |
Mercury_SC_401368 | Which set of equipment would be best to use when investigating what is found in a sample of pond water? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"net, gloves, specimen bags",
"beaker, calculator, graph paper",
"microscope, eye dropper, slides",
"measuring tape, thermometer, clipboard"
]
} | C | Question: Which set of equipment would be best to use when investigating what is found in a sample of pond water?
(A) net, gloves, specimen bags
(B) beaker, calculator, graph paper
(C) microscope, eye dropper, slides
(D) measuring tape, thermometer, clipboard
| Answer: (C) microscope, eye dropper, slides | Answer: (B) beaker, calculator, graph paper | Question: Which set of equipment would be best to use when investigating what is found in a sample of pond water?
(A) net, gloves, specimen bags
(B) beaker, calculator, graph paper
(C) microscope, eye dropper, slides
(D) measuring tape, thermometer, clipboard
Answer: (C) microscope, eye dropper, slides |
Mercury_7009765 | The Theory of Plate Tectonics revolutionized scientific thought because it | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"explained the movement of oceanic and continental crusts.",
"demonstrated how tidal forces affect coastlines.",
"mapped the pattern and frequency of earthquakes.",
"explained the mineral differences between continents."
]
} | A | Question: The Theory of Plate Tectonics revolutionized scientific thought because it
(A) explained the movement of oceanic and continental crusts.
(B) demonstrated how tidal forces affect coastlines.
(C) mapped the pattern and frequency of earthquakes.
(D) explained the mineral differences between continents.
| Answer: (A) explained the movement of oceanic and continental crusts. | Answer: (D) explained the mineral differences between continents. | Question: The Theory of Plate Tectonics revolutionized scientific thought because it
(A) explained the movement of oceanic and continental crusts.
(B) demonstrated how tidal forces affect coastlines.
(C) mapped the pattern and frequency of earthquakes.
(D) explained the mineral differences between continents.
Answer: (A) explained the movement of oceanic and continental crusts. |
AKDE&ED_2008_8_52 | How does repeating an experiment improve the likelihood of obtaining accurate results? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Data can be compared.",
"Time can be decreased.",
"Equipment can be added.",
"Procedures can be changed."
]
} | A | Question: How does repeating an experiment improve the likelihood of obtaining accurate results?
(A) Data can be compared.
(B) Time can be decreased.
(C) Equipment can be added.
(D) Procedures can be changed.
| Answer: (A) Data can be compared. | Answer: (D) Procedures can be changed. | Question: How does repeating an experiment improve the likelihood of obtaining accurate results?
(A) Data can be compared.
(B) Time can be decreased.
(C) Equipment can be added.
(D) Procedures can be changed.
Answer: (A) Data can be compared. |
Mercury_401504 | One hundred grams of water and 100 grams of vegetable oil are heated in identical containers at 70°C for 5 minutes. Their temperatures at the end of 5 minutes are different due to the difference in which property? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"volume",
"specific heat",
"conductivity",
"chemical energy"
]
} | B | Question: One hundred grams of water and 100 grams of vegetable oil are heated in identical containers at 70°C for 5 minutes. Their temperatures at the end of 5 minutes are different due to the difference in which property?
(A) volume
(B) specific heat
(C) conductivity
(D) chemical energy
| Answer: (B) specific heat | Answer: (A) volume | Question: One hundred grams of water and 100 grams of vegetable oil are heated in identical containers at 70°C for 5 minutes. Their temperatures at the end of 5 minutes are different due to the difference in which property?
(A) volume
(B) specific heat
(C) conductivity
(D) chemical energy
Answer: (B) specific heat |
Mercury_SC_401150 | There are MORE hours of sunlight in the Northern Hemisphere during which season? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"spring",
"summer",
"fall",
"winter"
]
} | B | Question: There are MORE hours of sunlight in the Northern Hemisphere during which season?
(A) spring
(B) summer
(C) fall
(D) winter
| Answer: (B) summer | Answer: (D) winter | Question: There are MORE hours of sunlight in the Northern Hemisphere during which season?
(A) spring
(B) summer
(C) fall
(D) winter
Answer: (B) summer |
Mercury_SC_415695 | Which force produces energy as heat? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"pull",
"gravity",
"friction",
"magnetic"
]
} | C | Question: Which force produces energy as heat?
(A) pull
(B) gravity
(C) friction
(D) magnetic
| Answer: (C) friction | Answer: (B) gravity | Question: Which force produces energy as heat?
(A) pull
(B) gravity
(C) friction
(D) magnetic
Answer: (C) friction |
Mercury_7109270 | Biologists have discovered that the beluga whales of Canada's St. Lawrence River have the highest rates of cancer among animals. What is most likely the reason for this high incidence of cancer in these whales? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"chemical and pollutant runoff into the ocean",
"average temperatures increased in the region",
"depletion of natural prey from the ecosystem",
"increased levels of carbon dioxide in the atmosphere"
]
} | A | Question: Biologists have discovered that the beluga whales of Canada's St. Lawrence River have the highest rates of cancer among animals. What is most likely the reason for this high incidence of cancer in these whales?
(A) chemical and pollutant runoff into the ocean
(B) average temperatures increased in the region
(C) depletion of natural prey from the ecosystem
(D) increased levels of carbon dioxide in the atmosphere
| Answer: (A) chemical and pollutant runoff into the ocean | Answer: (C) depletion of natural prey from the ecosystem | Question: Biologists have discovered that the beluga whales of Canada's St. Lawrence River have the highest rates of cancer among animals. What is most likely the reason for this high incidence of cancer in these whales?
(A) chemical and pollutant runoff into the ocean
(B) average temperatures increased in the region
(C) depletion of natural prey from the ecosystem
(D) increased levels of carbon dioxide in the atmosphere
Answer: (A) chemical and pollutant runoff into the ocean |
Mercury_7007823 | Reading from left to right, elements in the same period on the Periodic Table of the Elements | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"have the same reactivity.",
"decrease in atomic mass.",
"increase in atomic number.",
"have the same number of electrons."
]
} | C | Question: Reading from left to right, elements in the same period on the Periodic Table of the Elements
(A) have the same reactivity.
(B) decrease in atomic mass.
(C) increase in atomic number.
(D) have the same number of electrons.
| Answer: (C) increase in atomic number. | Answer: (B) decrease in atomic mass. | Question: Reading from left to right, elements in the same period on the Periodic Table of the Elements
(A) have the same reactivity.
(B) decrease in atomic mass.
(C) increase in atomic number.
(D) have the same number of electrons.
Answer: (C) increase in atomic number. |
Mercury_7044660 | A device that converts light energy into electricity used in many handheld calculators is a | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"battery.",
"photocell.",
"photo generator.",
"photovoltaic cell."
]
} | D | Question: A device that converts light energy into electricity used in many handheld calculators is a
(A) battery.
(B) photocell.
(C) photo generator.
(D) photovoltaic cell.
| Answer: (D) photovoltaic cell. | Answer: (B) photocell. | Question: A device that converts light energy into electricity used in many handheld calculators is a
(A) battery.
(B) photocell.
(C) photo generator.
(D) photovoltaic cell.
Answer: (D) photovoltaic cell. |
ACTAAP_2007_7_12 | Which most accurately describes a circle (pie) graph? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"used to demonstrate change in temperature only",
"used to demonstrate change that is continuous",
"used to demonstrate change that is not continuous",
"used to describe how part of the data relates to all of the data"
]
} | D | Question: Which most accurately describes a circle (pie) graph?
(A) used to demonstrate change in temperature only
(B) used to demonstrate change that is continuous
(C) used to demonstrate change that is not continuous
(D) used to describe how part of the data relates to all of the data
| Answer: (D) used to describe how part of the data relates to all of the data | Answer: (B) used to demonstrate change that is continuous | Question: Which most accurately describes a circle (pie) graph?
(A) used to demonstrate change in temperature only
(B) used to demonstrate change that is continuous
(C) used to demonstrate change that is not continuous
(D) used to describe how part of the data relates to all of the data
Answer: (D) used to describe how part of the data relates to all of the data |
MCAS_2001_8_6 | Which organisms benefit in the relationship between bees and flowering plants? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"only the bees",
"only the flowering plants",
"both the bees and the flowering plants",
"neither the bees nor the flowering plants"
]
} | C | Question: Which organisms benefit in the relationship between bees and flowering plants?
(A) only the bees
(B) only the flowering plants
(C) both the bees and the flowering plants
(D) neither the bees nor the flowering plants
| Answer: (C) both the bees and the flowering plants | Answer: (B) only the flowering plants | Question: Which organisms benefit in the relationship between bees and flowering plants?
(A) only the bees
(B) only the flowering plants
(C) both the bees and the flowering plants
(D) neither the bees nor the flowering plants
Answer: (C) both the bees and the flowering plants |
Mercury_7122763 | The orbit of Earth is almost circular and has a period of about 365 days. Compared to the orbit of Earth, which of these objects usually have highly elliptical orbits and can have periods of over 1000 years? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"asteroids",
"meteorites",
"comets",
"moons"
]
} | C | Question: The orbit of Earth is almost circular and has a period of about 365 days. Compared to the orbit of Earth, which of these objects usually have highly elliptical orbits and can have periods of over 1000 years?
(A) asteroids
(B) meteorites
(C) comets
(D) moons
| Answer: (C) comets | Answer: (A) asteroids | Question: The orbit of Earth is almost circular and has a period of about 365 days. Compared to the orbit of Earth, which of these objects usually have highly elliptical orbits and can have periods of over 1000 years?
(A) asteroids
(B) meteorites
(C) comets
(D) moons
Answer: (C) comets |
Mercury_7236653 | How is the theory of plate tectonics different from a hypothesis regarding a certain aspect of plate movement? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"The theory addresses an Earth-science topic.",
"The theory may change if new evidence emerges.",
"The theory explains a number of related observations.",
"The theory can be evaluated by a single-variable experiment."
]
} | C | Question: How is the theory of plate tectonics different from a hypothesis regarding a certain aspect of plate movement?
(A) The theory addresses an Earth-science topic.
(B) The theory may change if new evidence emerges.
(C) The theory explains a number of related observations.
(D) The theory can be evaluated by a single-variable experiment.
| Answer: (C) The theory explains a number of related observations. | Answer: (A) The theory addresses an Earth-science topic. | Question: How is the theory of plate tectonics different from a hypothesis regarding a certain aspect of plate movement?
(A) The theory addresses an Earth-science topic.
(B) The theory may change if new evidence emerges.
(C) The theory explains a number of related observations.
(D) The theory can be evaluated by a single-variable experiment.
Answer: (C) The theory explains a number of related observations. |
Mercury_7113943 | A large quantity of heavy rain falling in a short time period will most likely | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"reduce the amount of nutrients in the soil.",
"increase the number of minerals in the soil.",
"reduce oxygen levels in the soil.",
"increase the temperature of the soil."
]
} | A | Question: A large quantity of heavy rain falling in a short time period will most likely
(A) reduce the amount of nutrients in the soil.
(B) increase the number of minerals in the soil.
(C) reduce oxygen levels in the soil.
(D) increase the temperature of the soil.
| Answer: (A) reduce the amount of nutrients in the soil. | Answer: (C) reduce oxygen levels in the soil. | Question: A large quantity of heavy rain falling in a short time period will most likely
(A) reduce the amount of nutrients in the soil.
(B) increase the number of minerals in the soil.
(C) reduce oxygen levels in the soil.
(D) increase the temperature of the soil.
Answer: (A) reduce the amount of nutrients in the soil. |
Mercury_7197295 | An artificial pacemaker is a device that regulates the beat of the heart by an electrical stimulus. Some early pacemakers were powered by batteries and were worn externally with wires passing through the skin to the surface of the heart. Modern pacemakers are now much smaller and are implanted surgically. Which most likely has increased the lifespan and effectiveness of artificial pacemakers? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"the development of thinner wires",
"the invention of lithium batteries",
"mass production of pacemaker parts",
"reducing the cost of producing pacemakers"
]
} | B | Question: An artificial pacemaker is a device that regulates the beat of the heart by an electrical stimulus. Some early pacemakers were powered by batteries and were worn externally with wires passing through the skin to the surface of the heart. Modern pacemakers are now much smaller and are implanted surgically. Which most likely has increased the lifespan and effectiveness of artificial pacemakers?
(A) the development of thinner wires
(B) the invention of lithium batteries
(C) mass production of pacemaker parts
(D) reducing the cost of producing pacemakers
| Answer: (B) the invention of lithium batteries | Answer: (D) reducing the cost of producing pacemakers | Question: An artificial pacemaker is a device that regulates the beat of the heart by an electrical stimulus. Some early pacemakers were powered by batteries and were worn externally with wires passing through the skin to the surface of the heart. Modern pacemakers are now much smaller and are implanted surgically. Which most likely has increased the lifespan and effectiveness of artificial pacemakers?
(A) the development of thinner wires
(B) the invention of lithium batteries
(C) mass production of pacemaker parts
(D) reducing the cost of producing pacemakers
Answer: (B) the invention of lithium batteries |
TIMSS_2003_8_pg93 | A balloon filled with helium gas is set free and starts to move upward. Which of the following best explains why the helium balloon moves upward? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"The density of helium is less than the density of air.",
"The air resistance lifts the balloon up.",
"There is no gravity acting on the helium balloons.",
"The wind blows the balloon upward."
]
} | A | Question: A balloon filled with helium gas is set free and starts to move upward. Which of the following best explains why the helium balloon moves upward?
(A) The density of helium is less than the density of air.
(B) The air resistance lifts the balloon up.
(C) There is no gravity acting on the helium balloons.
(D) The wind blows the balloon upward.
| Answer: (A) The density of helium is less than the density of air. | Answer: (C) There is no gravity acting on the helium balloons. | Question: A balloon filled with helium gas is set free and starts to move upward. Which of the following best explains why the helium balloon moves upward?
(A) The density of helium is less than the density of air.
(B) The air resistance lifts the balloon up.
(C) There is no gravity acting on the helium balloons.
(D) The wind blows the balloon upward.
Answer: (A) The density of helium is less than the density of air. |
Mercury_416463 | Oscar and Andre used a microscope to observe a sample of pond water and drew an example of each type of organism they saw. Then they compared their drawings. They discovered that their drawings of a euglena and a paramecium were alike, but their amoeba drawings had very different shapes. What are two things that Oscar's amoeba could have been doing that made his drawing look different from Andre's? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"eating and moving",
"moving and digesting",
"digesting and excreting",
"excreting and eating"
]
} | A | Question: Oscar and Andre used a microscope to observe a sample of pond water and drew an example of each type of organism they saw. Then they compared their drawings. They discovered that their drawings of a euglena and a paramecium were alike, but their amoeba drawings had very different shapes. What are two things that Oscar's amoeba could have been doing that made his drawing look different from Andre's?
(A) eating and moving
(B) moving and digesting
(C) digesting and excreting
(D) excreting and eating
| Answer: (A) eating and moving | Answer: (B) moving and digesting | Question: Oscar and Andre used a microscope to observe a sample of pond water and drew an example of each type of organism they saw. Then they compared their drawings. They discovered that their drawings of a euglena and a paramecium were alike, but their amoeba drawings had very different shapes. What are two things that Oscar's amoeba could have been doing that made his drawing look different from Andre's?
(A) eating and moving
(B) moving and digesting
(C) digesting and excreting
(D) excreting and eating
Answer: (A) eating and moving |
Mercury_SC_401279 | The reading on a barometer rises when the air | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"pressure increases.",
"pressure decreases.",
"speed increases.",
"speed decreases."
]
} | A | Question: The reading on a barometer rises when the air
(A) pressure increases.
(B) pressure decreases.
(C) speed increases.
(D) speed decreases.
| Answer: (A) pressure increases. | Answer: (B) pressure decreases. | Question: The reading on a barometer rises when the air
(A) pressure increases.
(B) pressure decreases.
(C) speed increases.
(D) speed decreases.
Answer: (A) pressure increases. |
CSZ10373 | Which of the following processes is responsible for changing liquid water into water vapor? | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"photosynthesis",
"condensation",
"evaporation",
"precipitation"
]
} | C | Question: Which of the following processes is responsible for changing liquid water into water vapor?
(A) photosynthesis
(B) condensation
(C) evaporation
(D) precipitation
| Answer: (C) evaporation | Answer: (B) condensation | Question: Which of the following processes is responsible for changing liquid water into water vapor?
(A) photosynthesis
(B) condensation
(C) evaporation
(D) precipitation
Answer: (C) evaporation |
Mercury_7032585 | In an atom, protons plus neutrons make up the atom's | {
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"electric charge.",
"atomic mass.",
"atomic number.",
"electron number."
]
} | B | Question: In an atom, protons plus neutrons make up the atom's
(A) electric charge.
(B) atomic mass.
(C) atomic number.
(D) electron number.
| Answer: (B) atomic mass. | Answer: (C) atomic number. | Question: In an atom, protons plus neutrons make up the atom's
(A) electric charge.
(B) atomic mass.
(C) atomic number.
(D) electron number.
Answer: (B) atomic mass. |