question stringlengths 17 586 | choices listlengths 4 4 | answer stringclasses 4 values | split stringclasses 1 value | rationale null | source_dataset stringclasses 1 value |
|---|---|---|---|---|---|
Many bacteria are decomposer organisms. Which of the following statements best describes how these bacteria help make soil more fertile? | [
"The bacteria break down water into food.",
"The bacteria change sunlight into minerals.",
"The bacteria combine with sand to form rocks.",
"The bacteria break down plant and animal matter."
] | D | train | null | ai2_arc_ARC-Easy |
In Rutherford's experiment, what caused some high-energy particles to bounce off the metal, while most pass straight through? | [
"light waves",
"magnetic waves",
"positive charges",
"negative charges"
] | C | train | null | ai2_arc_ARC-Easy |
Jenny's class made an instrument to measure air pressure. The instrument is a | [
"thermometer.",
"rain gauge.",
"barometer.",
"wind vane."
] | C | train | null | ai2_arc_ARC-Easy |
Condensation in the water cycle can best be described as the result of water vapor | [
"rising into the atmosphere, cooling and changing into a liquid form.",
"rising into the atmosphere, warming and changing into a gaseous form.",
"changing from a liquid form into a solid and forming snow.",
"changing from a gas form into a solid and forming hail."
] | A | train | null | ai2_arc_ARC-Easy |
New carpet is being measured for a room that is 5.5 m by 4.6 m. On a measuring tape, what is the smallest unit that is necessary to measure the room accurately for the carpet? | [
"millimeters",
"centimeters",
"meters",
"kilometers"
] | B | train | null | ai2_arc_ARC-Easy |
How does an ecosystem benefit when leaves fall from a tree and decompose on the soil? | [
"Nutrients are released into the soil.",
"Soil erosion decreases.",
"Carbon dioxide is absorbed by the soil.",
"Soil temperature decreases."
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following gases do plants use in photosynthesis? | [
"hydrogen",
"oxygen",
"carbon dioxide",
"carbon monoxide"
] | C | train | null | ai2_arc_ARC-Easy |
During an ice age, enormous ice sheets called glaciers increase in size on Earth's surface, resulting in decreased ocean depths. Due to global cooling, the water cycle is disrupted between which two stages to cause an increase in glacier size? | [
"runoff and evaporation",
"transpiration and precipitation",
"precipitation and runoff",
"transpiration and evaporation"
] | C | train | null | ai2_arc_ARC-Easy |
Different units of measurement are more useful in some settings than in others. Which unit of measurement is most used when comparing distances within the solar system? | [
"the mile",
"the kilometer",
"the light year",
"the astronomical unit"
] | D | train | null | ai2_arc_ARC-Easy |
The formation of diamonds requires tremendous pressure that is generated | [
"in deep ocean trenches.",
"high in the mountains.",
"in dry environments.",
"deep below the crust."
] | D | train | null | ai2_arc_ARC-Easy |
What characteristic helps a rabbit survive in a winter environment? | [
"size",
"strength",
"long ears",
"camouflage"
] | D | train | null | ai2_arc_ARC-Easy |
A science class is taking a field trip to a forest to observe and study birds. Which tool would be most helpful for observing birds? | [
"beakers",
"binoculars",
"safety goggles",
"microscopes"
] | B | train | null | ai2_arc_ARC-Easy |
An example of an instinct is | [
"laughing at something funny.",
"dogs doing tricks when told.",
"doing your homework at the same time each day.",
"salmon returning to their birthplace to lay their eggs."
] | D | train | null | ai2_arc_ARC-Easy |
During which change of state do the particles of a substance move from being tightly packed together to having more freedom of movement? | [
"a solid becoming a liquid",
"a gas becoming a solid",
"a gas becoming a liquid",
"a liquid becoming a solid"
] | A | train | null | ai2_arc_ARC-Easy |
When astronauts walked on the Moon, they used weighted boots to help them walk due to the lower gravitational pull. What difference between Earth and the Moon accounts for the difference in gravity? | [
"density",
"diameter",
"mass",
"volume"
] | C | train | null | ai2_arc_ARC-Easy |
A population of wood mice lives in a cool, moist temperate forest. Several years of hot, dry weather have affected the plants in the area. Which mice in the population are most likely to survive this change and pass their genes on to their offspring? | [
"those with the warmest coats and best camouflage",
"the largest and strongest mice in the population",
"those with traits most adapted to the new environment",
"the youngest and fastest mice in the population"
] | C | train | null | ai2_arc_ARC-Easy |
Harmful ultraviolet rays from the Sun are primarily absorbed by | [
"dust.",
"ozone.",
"land masses.",
"water vapor."
] | B | train | null | ai2_arc_ARC-Easy |
Which of these is most likely caused by the action of water, wind, and animals? | [
"mountains",
"erosion",
"earthquakes",
"volcanic eruptions"
] | B | train | null | ai2_arc_ARC-Easy |
The core of Earth is divided into two layers. The outer core is made of | [
"basaltic rocks.",
"silicate rocks.",
"solid iron and nickel.",
"molten iron and nickel."
] | D | train | null | ai2_arc_ARC-Easy |
Offshore oil platforms affect ocean habitats. An ocean environment is most likely damaged by an offshore oil platform because | [
"leaking oil from the oil platform might pollute the water",
"fishing from the oil platform might reduce the fish population",
"drilling in the ocean floor might reduce the water temperature",
"changing the ocean floor might increase the number of hurricanes"
] | A | train | null | ai2_arc_ARC-Easy |
An object such as a hammer weighs less on the Moon than on Earth. This is because the Moon has a | [
"thinner atmosphere than Earth.",
"smaller diameter than Earth.",
"stronger magnetic field than Earth.",
"lower mass than Earth."
] | D | train | null | ai2_arc_ARC-Easy |
A scientist plans a project to determine the effect of rain on the formation of caves. An area of rock has been chosen as the site for the investigation. How often should the scientist measure the changes in the rock? | [
"every day",
"every week",
"every month",
"every year"
] | D | train | null | ai2_arc_ARC-Easy |
Which type of rock is formed from limestone that has been compacted, heated, and recrystallized? | [
"siltstone",
"sandstone",
"marble",
"shale"
] | C | train | null | ai2_arc_ARC-Easy |
Isabel goes jogging for two miles on a sunny afternoon. At the end of her run, she is warmer. As Isabel jogs, which function does the skin perform to help stabilize her body temperature? | [
"Her skin exchanges oxygen and carbon dioxide.",
"Her skin produces red blood cells.",
"Her skin releases hormones.",
"Her skin discharges water."
] | D | train | null | ai2_arc_ARC-Easy |
Which cell can survive without the help of other cells? | [
"leaf cell",
"yeast cell",
"onion cell",
"muscle cell"
] | B | train | null | ai2_arc_ARC-Easy |
Frogs and salamanders compete with each other for insects. Both frogs and salamanders catch flying insects with their tongues. Which feature would most likely help both animals compete for flying insects? | [
"sticky tongues",
"bright tongues",
"thick tongues",
"short tongues"
] | A | train | null | ai2_arc_ARC-Easy |
Which interaction benefits both organisms? | [
"a flea living on a dog",
"a bee pollinating a flower",
"a tapeworm living inside an animal",
"a mosquito biting a person"
] | B | train | null | ai2_arc_ARC-Easy |
Which type of rock is formed when limestone is subjected to heat and pressure? | [
"sandstone",
"basalt",
"marble",
"granite"
] | C | train | null | ai2_arc_ARC-Easy |
Jenny measures the outside temperature as 16 degrees Celsius (°C), 61 degrees Fahrenheit (°F). She observes precipitation falling from the clouds in a solid form. What type of precipitation is Jenny most likely observing? | [
"hail",
"rain",
"sleet",
"snow"
] | A | train | null | ai2_arc_ARC-Easy |
A change in the environment that causes a response is known as a | [
"stimulus",
"habit",
"reflex",
"source"
] | A | train | null | ai2_arc_ARC-Easy |
Aluminum is an element. Which of the following best describes the smallest particle of aluminum that retains all the properties of aluminum? | [
"a molecule",
"an atom",
"a proton",
"an electron"
] | B | train | null | ai2_arc_ARC-Easy |
What advantage do sea stars gain from having radial symmetry? | [
"They reproduce at a faster rate.",
"They digest food more efficiently.",
"They move quickly along the ground.",
"They sense predators and potential food from all directions."
] | D | train | null | ai2_arc_ARC-Easy |
A student has a ball of clay that sinks when placed in a pan of water. Which property should he change to make the clay float? | [
"color",
"texture",
"mass",
"shape"
] | D | train | null | ai2_arc_ARC-Easy |
The population of which of the following 26 organisms would most likely decline if small animals like rats, rabbits, and snakes were eliminated from an ecosystem? | [
"earthworms",
"grasses",
"hawks",
"mushrooms"
] | C | train | null | ai2_arc_ARC-Easy |
During a lab investigation, students were asked to determine the best way to clean up an oil spill using different materials. Investigation Materials • filter paper • foam sponge • metal wire screen • thin sock filled with hair The students tested the materials by placing each material into separate buckets containing oil and water. They recorded their observations on which material absorbed the most oil. Why would the students' teacher ask them to repeat their tests? | [
"to determine if water and oil can be separated",
"to learn more about how to protect wildlife during an oil spill",
"to improve the chances of obtaining accurate oil cleanup results",
"to increase the total amount of oil removed from each container"
] | C | train | null | ai2_arc_ARC-Easy |
A delta can be seen from the air at the mouth of the Mississippi River. This delta was formed by | [
"erosion.",
"weathering.",
"conservation of soil.",
"deposition of sediment."
] | D | train | null | ai2_arc_ARC-Easy |
The nose, mouth, and diaphragm are parts of which body system? | [
"digestive",
"muscular",
"circulatory",
"respiratory"
] | D | train | null | ai2_arc_ARC-Easy |
Students are studying some leaves. They group the leaves by shape. Which science process are the students using when they put the leaves in different groups? | [
"classifying",
"predicting",
"measuring",
"experimenting"
] | A | train | null | ai2_arc_ARC-Easy |
The thin, semi-permeable membrane that encloses a cell allows nutrients to enter and wastes to be | [
"digested.",
"recycled.",
"protected.",
"excreted."
] | D | train | null | ai2_arc_ARC-Easy |
A small, fast-moving river in is in a V-shaped valley on the slope of a mountain. If you follow the river to where it passes through a plain, what will the river most likely look like compared with how it looked on the mountain? | [
"Much the same",
"Deeper and faster",
"Slower and wider",
"Straighter"
] | C | train | null | ai2_arc_ARC-Easy |
The atmosphere of Mars is almost entirely composed of a greenhouse gas. Compared with Earth, which factor accounts for the low, nighttime surface temperatures on Mars? | [
"Mars is much farther from the Sun than Earth.",
"The atmosphere on Mars has an extremely low density.",
"The atmosphere on Mars lacks global circulation.",
"Mars has more glacial activity than Earth."
] | B | train | null | ai2_arc_ARC-Easy |
Asexually produced offspring are genetically | [
"identical to the parent",
"different from the parent",
"different from each other",
"formed by two parents"
] | A | train | null | ai2_arc_ARC-Easy |
A teacher asks her students to examine titles of four scientific articles. Which titled article is specifically about a chemical change? | [
"How Baking Soda Reacts With Vinegar",
"How Rust Can Be Scraped off of Metal",
"How Metals Respond to Electrical Currents",
"How Elements Can Change Phase When Heated"
] | A | train | null | ai2_arc_ARC-Easy |
Nuclear fusion is the source of energy for stars. Besides hydrogen, which other element is most likely also common in stars? | [
"helium",
"nitrogen",
"oxygen",
"uranium"
] | A | train | null | ai2_arc_ARC-Easy |
Plants in a forest need to obtain nutrients from the soil to survive. How do most of the nutrients get back in the soil once the forest plants have used them for growth? | [
"Organic matter recycles from dead organisms.",
"Commercial fertilizers are applied by humans.",
"Solar radiation reaches the ground surface.",
"Rainwater drips off of living organisms."
] | A | train | null | ai2_arc_ARC-Easy |
Conjugation in a paramecium differs from sexual reproduction in volvox because conjugation | [
"results in two genetically identical cells.",
"requires specialized gonidia cells.",
"forms haploid male and female gametes.",
"takes place between specialized cells."
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following helps to produce urine in humans and other mammals? | [
"bladder",
"urethra",
"kidneys",
"ureter"
] | C | train | null | ai2_arc_ARC-Easy |
A scientist looks at a graph that shows the percentages of humus, clay, and sand that make up a soil. If the scientist had the total weight of each material, instead of percentages, what type of graph would be best to illustrate the data? | [
"bar graph",
"scatterplot",
"circle graph",
"pictograph"
] | A | train | null | ai2_arc_ARC-Easy |
Which unit of measurement describes an object's length? | [
"meter",
"kilogram",
"liter",
"degree"
] | A | train | null | ai2_arc_ARC-Easy |
Which organ is part of the respiratory system? | [
"stomach",
"lungs",
"spinal cord",
"large intestines"
] | B | train | null | ai2_arc_ARC-Easy |
The iron in iron-rich red soils may not be in a form that can be taken up by tree roots. As a result, leaves and needles may look yellow. Some trees release acids that convert iron in soil to a usable form. This change in soil chemistry is a type of which process? | [
"deposition",
"weathering",
"precipitation",
"photosynthesis"
] | B | train | null | ai2_arc_ARC-Easy |
The action that results when waves made in a pond strike the edges and bounce back is known as | [
"amplitude.",
"frequency.",
"vibration.",
"reflection."
] | D | train | null | ai2_arc_ARC-Easy |
Sleet and hail are forms of | [
"clouds",
"energy",
"evaporation",
"precipitation"
] | D | train | null | ai2_arc_ARC-Easy |
Astronomers have determined the surface temperature of stars by studying their colors. What color emission represents stars with the hottest temperatures? | [
"blue",
"red",
"white",
"yellow"
] | A | train | null | ai2_arc_ARC-Easy |
Because sulfur cannot be decomposed by simple chemical methods into two or more different substances, it is classified as | [
"an element.",
"a compound.",
"a mixture.",
"a molecule."
] | A | train | null | ai2_arc_ARC-Easy |
The students watch ocean waves crash on a beach. Which statement describes what will most likely happen because of the waves? | [
"Grass on the beach will grow longer.",
"Sand from the beach will wash away.",
"Salt from the ocean will be left on the beach.",
"Currents in the ocean will become stronger."
] | B | train | null | ai2_arc_ARC-Easy |
When plants and animals die, which organisms help return nutrients to the food chain? | [
"decomposers",
"predators",
"prey",
"producers"
] | A | train | null | ai2_arc_ARC-Easy |
Which object used in an experiment can safely be recycled? | [
"an aluminum can",
"a wet paper towel",
"salt spilled onto a tabletop",
"a broken graduated cylinder"
] | A | train | null | ai2_arc_ARC-Easy |
Evidence that living things have evolved over hundreds of millions of years can be found in | [
"particles in the air",
"rocks containing fossils",
"tree rings from recently logged trees",
"chemicals in human hair"
] | B | train | null | ai2_arc_ARC-Easy |
What causes the blue color of the sky? | [
"emission of light by land and water surfaces",
"reflection of light from land and water surfaces",
"absorption of light by matter in the atmosphere",
"scattering of light by matter in the atmosphere"
] | D | train | null | ai2_arc_ARC-Easy |
As the population of small fish in a lake decreases, the population of large fish that depend on the small fish for food will | [
"reproduce faster",
"begin to produce their own food",
"decrease in number",
"increase in number"
] | C | train | null | ai2_arc_ARC-Easy |
Living organisms require energy for biological processes. Chemical energy in a plant cell is | [
"produced in vacuoles.",
"converted from solar energy.",
"developed by centrioles.",
"stored as kinetic energy."
] | B | train | null | ai2_arc_ARC-Easy |
Pollen is necessary for a flowering plant to | [
"grow.",
"blossom.",
"germinate.",
"reproduce."
] | D | train | null | ai2_arc_ARC-Easy |
Which gas makes up the greatest percentage of Earth's atmosphere? | [
"argon",
"nitrogen",
"nitrous oxide",
"carbon dioxide"
] | B | train | null | ai2_arc_ARC-Easy |
Which is the best explanation of the term ecology? | [
"the study of the nonliving parts of the environment",
"the study of the living parts of the environment",
"the study of the protection and renewal of natural resources",
"the study of organisms and their interactions with the environment"
] | D | train | null | ai2_arc_ARC-Easy |
A student leaves a rock in the Sun on a bright afternoon. An hour after sunset, the weather is cool, but the rock still feels warm. The student has demonstrated a property of the rock resulting directly from which of the rock's other properties? | [
"its reactivity",
"its magnetism",
"its specific heat",
"its chemical energy"
] | C | train | null | ai2_arc_ARC-Easy |
Which characteristic is not an inherited trait? | [
"size",
"eye color",
"skin color",
"personality"
] | D | train | null | ai2_arc_ARC-Easy |
Eating leafy vegetables is important for human health. This is because leafy vegetables are a good source of which of the following? | [
"protein",
"carbohydrates",
"minerals",
"fat"
] | C | train | null | ai2_arc_ARC-Easy |
What is necessary to use on a telescope in order to photograph solar flares and solar prominences? | [
"a light filter",
"a chronograph",
"an electric drive",
"a series of mirrors"
] | A | train | null | ai2_arc_ARC-Easy |
Near Earth's equator, water generally exists naturally in the liquid and gas states. In which other part of Earth is water usually found naturally in only two states? | [
"Indian Ocean",
"interior of Africa",
"South Pole",
"Tropic of Cancer"
] | C | train | null | ai2_arc_ARC-Easy |
A cat jumps when startled by a loud noise. This is an example of an organism | [
"sensing and responding to its external environment",
"sensing and responding to its internal environment",
"changing and controlling its external environment",
"changing and controlling its internal environment"
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following materials would best slow the transfer of heat? | [
"aluminum",
"copper",
"glass",
"wood"
] | D | train | null | ai2_arc_ARC-Easy |
What can cause a moving object to increase its speed in a forward direction? | [
"a force pushing on the object from the opposite direction",
"a force that continually acts on the object in the direction the object is moving",
"an increase in the mass of the object",
"a decrease in the mass of the object"
] | B | train | null | ai2_arc_ARC-Easy |
In which oceanic zone do clams and crabs survive by burrowing in the sand? | [
"oceanic",
"intertidal",
"deep ocean",
"open ocean"
] | B | train | null | ai2_arc_ARC-Easy |
A manufacturing industry has asked to relocate its plant to your town. From an environmental perspective, which question is least important to ask before deciding whether the industry may move to your town? | [
"How will the plant affect wildlife of the area?",
"What kinds of pollution will the plant produce?",
"What impact will the plant have on the population of the town?",
"What are the uses of the products that the plant will manufacture?"
] | D | train | null | ai2_arc_ARC-Easy |
Some meteorologists use visual aids such as diagrams, maps, and charts when they present the weather to television viewers. How do different types of visual aids help the viewers understand complex weather phenomena? | [
"by combining knowledge from past reports with new information",
"by providing information collected by other meteorologists",
"by checking the accuracy of each part of the weather report",
"by showing many components that impact the weather"
] | D | train | null | ai2_arc_ARC-Easy |
Which renewable energy resource possesses the greatest potential for providing renewable energy to meet the future needs of the southern United States? | [
"tidal",
"water",
"solar",
"coal"
] | C | train | null | ai2_arc_ARC-Easy |
A student performs an experiment and the results are shown below: Before- Iron filings are brown, small, and magnetic: Copper sulfate crystals are blue, brittle, and not magnetic. After- The copper formed was reddish, solid, and not magnetic: Iron sulfide solution was colorless and not magnetic. Which statement supports that a chemical reaction took place? | [
"Changes in color occurred.",
"A new substance was formed.",
"A physical change in the iron occurred.",
"The original substances were present after."
] | B | train | null | ai2_arc_ARC-Easy |
In order for rocks to be classified as igneous, the rocks must | [
"solidify at the surface of Earth.",
"be eroded and deposited in layers.",
"be formed from magma.",
"change form when pressure is applied."
] | C | train | null | ai2_arc_ARC-Easy |
Which of these is most likely the cause of a father and son having almost identical-sounding voices? | [
"learned behaviors",
"environmental conditions",
"inherited characteristics",
"instinctive characteristics"
] | C | train | null | ai2_arc_ARC-Easy |
Frog eggs hatch into tadpoles, and then tadpoles gradually develop into frogs. This process is known as | [
"adolescence.",
"crossbreeding.",
"regeneration.",
"metamorphosis."
] | D | train | null | ai2_arc_ARC-Easy |
Many people like to use microwave ovens rather than traditional ovens. The main reason for this is that microwave ovens | [
"take less time to cook food than regular ovens do.",
"get hotter than regular ovens.",
"do not leave spattered grease or food on the inside.",
"cannot overcook food."
] | A | train | null | ai2_arc_ARC-Easy |
When trees are removed from an area in a tropical rainforest, the area experiences an increase in soil erosion. Which statement best explains why removing the trees can lead to soil erosion? | [
"Less bedrock will be available to make soil.",
"There will be fewer roots to hold the soil in place.",
"The number of soil-eating insects in the area will increase.",
"The amount of solar radiation reaching the ground will increase."
] | B | train | null | ai2_arc_ARC-Easy |
What information is needed to calculate the speed of a car? | [
"the road conditions and type of tires",
"the type of engine and the amount of gas used by the engine",
"the car length and distance traveled",
"the distance travel"
] | D | train | null | ai2_arc_ARC-Easy |
Freda always hangs her wet swimsuit outdoors after getting out of the swimming pool. Which of the following is least likely to affect the rate at which Freda's swimsuit dries? | [
"the heat of the Sun",
"the speed of the wind",
"the temperature of the water in the pool",
"the amount of water vapor in the air"
] | C | train | null | ai2_arc_ARC-Easy |
Some butterflies live an average of two weeks. This period of time is called a life | [
"process",
"span",
"change",
"cycle"
] | B | train | null | ai2_arc_ARC-Easy |
Which two body systems work together to transport oxygen to the cells? | [
"skeletal and respiratory",
"digestive and respiratory",
"respiratory and circulatory",
"respiratory and reproductive"
] | C | train | null | ai2_arc_ARC-Easy |
Some localized layers of rock contain the element iridium. Iridium is most often found in space objects such as meteoroids and asteroids. The discovery of these iridium-containing layers has been matched to which phenomena in Earth's history? | [
"tectonic plate separations",
"mass species extinctions",
"orbital path changes",
"magnetic pole reversals"
] | B | train | null | ai2_arc_ARC-Easy |
Which of these converts electrical energy to light energy? | [
"a star",
"a flashlight",
"a campfire",
"a tea kettle"
] | B | train | null | ai2_arc_ARC-Easy |
Darwin's theory that animal species can change over time was inspired by his research on which set of islands? | [
"the Philippine Islands",
"the Virgin Islands",
"the Hawaiian Islands",
"the Galapagos Islands"
] | D | train | null | ai2_arc_ARC-Easy |
An athlete is running a race. The athlete's body needs energy. Which organelle(s) in the athlete's cells supply the energy for cellular functions? | [
"Golgi apparatus",
"mitochondrion",
"ribosome",
"nucleus"
] | B | train | null | ai2_arc_ARC-Easy |
Which of these would best help a scientist discover a new planet? | [
"making a model of outer space",
"asking questions to other scientists",
"collecting information about planets",
"looking at the night sky with a telescope"
] | D | train | null | ai2_arc_ARC-Easy |
Which of these lists has only products that come from plants? | [
"Paper, spices, and fibers",
"Wool, lumber, and butter",
"Medicines, leather, and milk",
"Cotton, rubber, and eggs"
] | A | train | null | ai2_arc_ARC-Easy |
Why is some food dehydrated for astronauts to eat in space? | [
"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 | train | null | ai2_arc_ARC-Easy |
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? | [
"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 | train | null | ai2_arc_ARC-Easy |
Which of the following is believed to be one cause of global warming? | [
"atmospheric rise of carbon dioxide",
"hot air from air conditioner exhaust",
"methane gas escaping from landfills",
"body heat generated by overpopulation"
] | A | train | null | ai2_arc_ARC-Easy |
What product was being formed as plants died and sank to the bottom of swamps? | [
"oil",
"gas",
"coal",
"shale"
] | C | train | null | ai2_arc_ARC-Easy |
What is the approximate length of time it takes the Moon to complete one lunar cycle? | [
"14 days",
"29 days",
"180 days",
"365 days"
] | B | train | null | ai2_arc_ARC-Easy |
A line graph is best used when the measured variable is | [
"changing at a constant rate.",
"nearly equal in several trials.",
"being compared to a control.",
"observed at one point in time."
] | A | train | null | ai2_arc_ARC-Easy |
All living things need energy to survive. What is the primary source of energy for all living things? | [
"plants",
"the sun",
"water",
"the wind"
] | B | train | null | ai2_arc_ARC-Easy |
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