question stringlengths 17 586 | choices listlengths 4 4 | answer stringclasses 4 values | split stringclasses 1 value | rationale null | source_dataset stringclasses 1 value |
|---|---|---|---|---|---|
Protein is used by the human body to | [
"build strong bones.",
"absorb vitamins.",
"repair cells.",
"provide fiber."
] | C | train | null | ai2_arc_ARC-Easy |
Changes in the weather are important to people living in Alaska. Which two tools best help scientists to share information about weather? | [
"radio and computer",
"clock and notebook",
"television and hand lens",
"microscope and telephone"
] | A | train | null | ai2_arc_ARC-Easy |
Which outcome is most likely if a person consumes more Calories than needed for daily activities? | [
"weight loss",
"weight gain",
"deficiency disease",
"infectious disease"
] | B | train | null | ai2_arc_ARC-Easy |
In a mixture, a magnet is used to separate some particles from sand. The dark particles are most likely made of which element? | [
"sodium",
"iron",
"sulfur",
"copper"
] | B | train | null | ai2_arc_ARC-Easy |
A student tosses a ball into the air. Which force causes the ball to fall back to the ground? | [
"gravity",
"magnetism",
"mechanical",
"friction"
] | A | train | null | ai2_arc_ARC-Easy |
The gravitational force between two objects depends on the distance between the objects and each object's | [
"mass",
"volume",
"pressure",
"temperature"
] | A | train | null | ai2_arc_ARC-Easy |
Scientists who have studied global climate changes have found that the average temperature of Earth has risen. There has also been an increase in the accumulation of atmospheric greenhouse gases. What is the goal of the scientific community in collecting this type of data? | [
"to understand how greenhouse gases are related to global warming",
"to decrease the temperature using fossil fuels",
"to change public attitude on using natural resources",
"to increase the amount of ice in the Arctic"
] | A | train | null | ai2_arc_ARC-Easy |
Paper chromatography is a process used to separate mixtures of substances into their components. The components are carried by a mobile phase through a stationary phase made of absorbent paper. An investigation analyzed a sample of black ink to determine its components.Which property allows the components to separate? | [
"the solubility of the components in the mobile phase",
"the evaporation rate of the components at a certain temperature",
"the magnetic property of the components",
"the thickness of the paper used as the stationary phase"
] | A | train | null | ai2_arc_ARC-Easy |
In one area, a large source of prey for eagles is rabbits. If the number of rabbits suddenly decreases, what effect will it most likely have on the eagles? | [
"Their numbers will increase.",
"Their numbers will decrease.",
"They will adapt new behaviors.",
"They will migrate to new locations."
] | B | train | null | ai2_arc_ARC-Easy |
Moving water in a river is considered a renewable resource because it | [
"carries dissolved oxygen",
"easily erodes sediments",
"is made of natural gas",
"can be recycled by nature over time"
] | D | train | null | ai2_arc_ARC-Easy |
When studying planetary data, Jackie found some similarities and differences among the planets that make up the solar system. Which generalization is true about the orbits of the major planets in the solar system? | [
"Planetary orbits have the same plane.",
"Planetary orbits are mostly elliptical in shape.",
"Planets orbit at the same speed around the Sun.",
"Planets orbit in different directions around the Sun."
] | B | train | null | ai2_arc_ARC-Easy |
When nitrogen-rich runoff from farms enters a nearby farm, it causes abundant growth of algal mat on the pond surface. As a result, underwater plants in the pond begin to die. Identify the limiting factor that is most responsible for causing the underwater plants to die. | [
"oxygen",
"sunlight",
"nitrogen",
"carbon dioxide"
] | B | train | null | ai2_arc_ARC-Easy |
What is the main source of energy for the water cycle? | [
"the Sun",
"fossil fuels",
"clouds",
"the ocean"
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following properties of a substance is conserved during thermal expansion? | [
"mass",
"volume",
"shape",
"distance between particles"
] | A | train | null | ai2_arc_ARC-Easy |
Trees use narrow tubes to transport water upward. Which property of water allows the water to rise in these narrow tubes? | [
"high vapor pressure",
"high boiling point",
"cohesion of molecules",
"net charge of molecules"
] | C | train | null | ai2_arc_ARC-Easy |
Which pair together could cause a rainbow? | [
"Fog and clouds",
"Rain and snow",
"Clouds and ice",
"Sunshine and rain"
] | D | train | null | ai2_arc_ARC-Easy |
The property of matter that resists changes in motion is called | [
"inertia.",
"friction.",
"gravity.",
"weight."
] | A | train | null | ai2_arc_ARC-Easy |
Monarch butterflies use milkweed plants during all of their life stages. Milkweed plants grow in open areas, such as grasslands and wetlands. They also often grow between row crops. Given this information, which of these biotechnologies would pose the greatest threat to monarch butterflies? | [
"development of new antibiotics",
"development of new herbicides",
"development of disease-resistant crops",
"development of insect-resistant crops"
] | B | train | null | ai2_arc_ARC-Easy |
In the past, Native American Indians buried dead fish along with corn seeds. This technique was used because the decomposing dead fish would | [
"provide nutrients for the growing corn plant",
"eliminate the need for weeding around the corn plant",
"release oxygen for use by the corn plant",
"supply all the water needed by the corn plant"
] | A | train | null | ai2_arc_ARC-Easy |
Earth is composed of layers of material with different properties. Which of the following is most likely to be in constant motion? | [
"core",
"mantle",
"oceanic crust",
"continental crust"
] | B | train | null | ai2_arc_ARC-Easy |
Which mechanism helps carbon to cycle from the atmosphere to living organisms? | [
"tissue decomposition",
"cellular respiration",
"photosynthesis",
"transpiration"
] | C | train | null | ai2_arc_ARC-Easy |
A city has an outbreak of a disease that affects an unusually large portion of its population at the same time. Which term best describes the outbreak? | [
"pandemic",
"plague",
"epidemic",
"infection"
] | C | train | null | ai2_arc_ARC-Easy |
In which structure is the Sun located? | [
"Milky Way Galaxy",
"Andromeda Galaxy",
"Cat's Eye Nebula",
"Horseshoe Nebula"
] | A | train | null | ai2_arc_ARC-Easy |
Removing waste from the body is the primary function of which body system? | [
"excretory",
"nervous",
"circulatory",
"skeletal"
] | A | train | null | ai2_arc_ARC-Easy |
Which discovery revealed that the universe contains many structures composed of millions of stars? | [
"novas",
"galaxies",
"black holes",
"solar systems"
] | B | train | null | ai2_arc_ARC-Easy |
If a tall tree falls over in a crowded forest, which resource becomes available to the surrounding plants? | [
"air",
"soil",
"water",
"sunlight"
] | D | train | null | ai2_arc_ARC-Easy |
What best describes the mantle of Earth? | [
"a thin layer that is located on the surface",
"a solid layer made of iron and nickel",
"the largest layer between the crust and outer core",
"the smallest layer that is made up of molten rock"
] | C | train | null | ai2_arc_ARC-Easy |
When Javier exercises, his muscle cells need more oxygen. Which would help Javier's muscle cells receive more oxygen? | [
"decreasing his respiration rate",
"increasing his perspiration rate",
"increasing the rate his heart beats",
"decreasing the rate his blood flow"
] | C | train | null | ai2_arc_ARC-Easy |
Which process has most likely occurred when new traits appear in a species? | [
"selective breeding",
"genetic mutation",
"crossbreeding",
"cloning"
] | B | train | null | ai2_arc_ARC-Easy |
A patient visits the doctor for a checkup and is diagnosed with skin cancer. Which of the following is the most likely cause of this disease? | [
"poor eating and sleeping habits",
"exposure to ultraviolet rays",
"a defect in the person's immune system",
"working with plants and animals"
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following forms of energy can travel by vibrating particles of air? | [
"electrical",
"light",
"magnetic",
"sound"
] | D | train | null | ai2_arc_ARC-Easy |
A chef uses a metal spoon to stir noodles cooking in a pan. After five minutes, she notices that the thermal energy from the pan has made the spoon | [
"cold.",
"hot.",
"wet.",
"dry."
] | B | train | null | ai2_arc_ARC-Easy |
Which will most likely cause a decrease in predator populations? | [
"an increase in prey populations",
"a decrease in prey populations",
"a decrease in decomposers",
"an increase in producers"
] | B | train | null | ai2_arc_ARC-Easy |
A robin catches and eats a cricket. Which statement best describes the roles of each animal? | [
"The robin is the prey and the cricket is the predator.",
"The robin is the predator and the cricket is the prey.",
"The robin is the consumer and the cricket is the producer.",
"The robin is the producer and the cricket is the consumer."
] | B | train | null | ai2_arc_ARC-Easy |
Hookworms live inside the intestines of dogs. As the dog eats, the hookworms consume partially digested food. As a result of this nutrient diversion, the dog can become malnourished and weakened. Which best describes the relationship between the hookworms and the dog? | [
"a parasitic relationship",
"a mutualistic relationship",
"a predator-prey relationship",
"a producer-consumer relationship"
] | A | train | null | ai2_arc_ARC-Easy |
The prairie grass ecosystem once had a deep layer of topsoil which was protected by the grasses that covered it. Removal of these grasses for farmland is causing the soil to be eroded mainly by | [
"wind and rain.",
"animal movement.",
"crops grown in the soil.",
"increased temperatures."
] | A | train | null | ai2_arc_ARC-Easy |
When the Northern Hemisphere is tilted toward the Sun, what season is occurring in Australia? | [
"fall",
"winter",
"spring",
"summer"
] | B | train | null | ai2_arc_ARC-Easy |
Light waves are arranged in the electromagnetic spectrum by | [
"wavelength and brightness.",
"speed and color.",
"brightness and color.",
"wavelength and frequency."
] | D | train | null | ai2_arc_ARC-Easy |
In order to distinguish fact from opinion, conclusions in experiments should be | [
"recorded on a computer.",
"presented in bar graphs.",
"based on verifiable data.",
"organized in a table."
] | C | train | null | ai2_arc_ARC-Easy |
Pumice is formed when lava from a volcano cools. Which rock type is pumice? | [
"Gaseous rock",
"Igneous rock",
"Sedimentary rock",
"Metamorphic rock"
] | B | train | null | ai2_arc_ARC-Easy |
The principle of uniformitarianism states that most of the landscape of Earth was formed slowly and over a long period of time. Which occurrence of Earth is least supported by this principle? | [
"soil development",
"volcanic eruption",
"plate movement",
"fossil formation"
] | B | train | null | ai2_arc_ARC-Easy |
Selective breeding has resulted in plants that are resistant to pests and produce a higher yield of fruits and vegetables. Which of these is the most likely disadvantage that can result from this process? | [
"decreased genetic diversity",
"habitat destruction",
"overpopulation",
"increased erosion"
] | A | train | null | ai2_arc_ARC-Easy |
Lori owns a house next to the lake. She uses lots of fertilizer to keep her lawn green. Which impact could fertilizing her lawn have on the lake? | [
"an increase in the algae population",
"an increase in the fish population",
"an increase in the mosquito population",
"an increase in the lake's depth"
] | A | train | null | ai2_arc_ARC-Easy |
To compare the hardness of different minerals, it would be BEST to find | [
"the color of the minerals.",
"which minerals scratch other minerals.",
"which minerals reflect light most strongly.",
"the samples that feel smoothest to the touch."
] | B | train | null | ai2_arc_ARC-Easy |
A house is built in a desert, where there is no electricity and very little wind. Which action could lead to operating the electrical appliances in the house that would cause the least amount of environmental pollution? | [
"constructing a small hydroelectric plant",
"placing solar panels on the roof of the house",
"using gasoline generators",
"burning coal or wood"
] | B | train | null | ai2_arc_ARC-Easy |
Students are learning about the natural resources in Maryland. One group of students researches information about renewable natural resources in the state. The other group researches information about nonrenewable natural resources in the state. The resources the students investigate include plants, animals, soil, minerals, water, coal, and oil. Which nonrenewable natural resource heats homes? | [
"sunlight",
"aluminum",
"natural gas",
"ocean waves"
] | C | train | null | ai2_arc_ARC-Easy |
Gregor Mendel was the first to show that organisms had traits that are passed on from parents to the next generation. In order for the scientific community to accept Mendel's discovery, others had to | [
"invent the microscope.",
"read through his journals.",
"duplicate the results of his experiments.",
"invest money in his scientific investigations."
] | C | train | null | ai2_arc_ARC-Easy |
Alicia has lots of old bicycle parts. She wants to build something new with the parts. What is the first thing Alicia should do? | [
"plan the new item",
"construct the new item",
"try out the new item",
"evaluate the new item"
] | A | train | null | ai2_arc_ARC-Easy |
Which is a major organ of the nervous system? | [
"brain",
"stomach",
"lung",
"bone"
] | A | train | null | ai2_arc_ARC-Easy |
Some students were investigating the relationship between position, time, and speed. The students marked the initial position of a toy car. The students set the car into motion and marked the position of the car each second. Which of these are most appropriate for recording and analyzing the students' data? | [
"a table and a bar graph",
"a table and a line graph",
"a pie chart and a bar graph",
"a pie chart and a line graph"
] | B | train | null | ai2_arc_ARC-Easy |
If the number of trees significantly decreases, the atmosphere's level of which gas might significantly increase? | [
"nitrogen",
"carbon dioxide",
"carbon monoxide",
"hydrogen"
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following is the best estimate of the number of stars in a typical galaxy? | [
"tens",
"hundreds",
"thousands",
"billions"
] | D | train | null | ai2_arc_ARC-Easy |
A company plants trees on a bare hillside. Which of these is the BEST reason for planting the trees? | [
"The trees provide oxygen for the soil.",
"The trees prevent soil from washing away.",
"The trees make shade for animals living there.",
"The trees cause animals to move to other places."
] | B | train | null | ai2_arc_ARC-Easy |
Index fossils help scientists estimate the age of a rock because index fossil species only existed for a relatively short time. What happened to the species that are now used as index fossils? | [
"They became extinct.",
"They changed their diets.",
"They hid in marine sediments.",
"They migrated to new environments."
] | A | train | null | ai2_arc_ARC-Easy |
Feathers, wings, and the hollow bones of birds are examples of | [
"adaptations for flight",
"responses to stimuli",
"unnecessary body parts",
"reproductive structures"
] | A | train | null | ai2_arc_ARC-Easy |
A student climbs up a rocky mountain trail in Maine. She sees many small pieces of rock on the path. Which action most likely made the small pieces of rock? | [
"sand blowing into cracks",
"leaves pressing down tightly",
"ice breaking large rocks apart",
"shells and bones sticking together"
] | C | train | null | ai2_arc_ARC-Easy |
Which of the following heat exchange processes involves the collision of particles? | [
"insulation",
"conduction",
"convection",
"radiation"
] | B | train | null | ai2_arc_ARC-Easy |
The most effective way to show a change happening over time is to display your results using a | [
"line graph.",
"Venn diagram.",
"pie chart.",
"flow chart."
] | A | train | null | ai2_arc_ARC-Easy |
The diet of a brown bear includes roots, grasses, berries, nuts, fish, insects, and mammals. Based on this description, in what category is a brown bear? | [
"carnivore",
"herbivore",
"omnivore",
"decomposer"
] | C | train | null | ai2_arc_ARC-Easy |
A bracket fungus grows on a dead tree and breaks it down into chemical nutrients. What term best classifies the role of a bracket fungus in this ecosystem? | [
"producer",
"consumer",
"parasite",
"decomposer"
] | D | train | null | ai2_arc_ARC-Easy |
The comet Shoemaker-Levy struck the planet Jupiter in July of 1994. The process of a comet striking a planet is an example of a net decrease in kinetic energy. Kinetic energy was ultimately converted into | [
"light.",
"radiation.",
"thermal energy.",
"electromagnetic energy."
] | C | train | null | ai2_arc_ARC-Easy |
An earthquake in the Earth's crust under the ocean releases sound waves. Which statement accurately describes how the sound waves spread? | [
"They spread in all directions away from their source.",
"They remain trapped near the source by water pressure.",
"They travel mostly horizontally along the ocean floor.",
"They travel mostly upward toward the surface of the water."
] | A | train | null | ai2_arc_ARC-Easy |
Which provides the oldest evidence for oxygen accumulation in Earth's atmosphere? | [
"the earliest fossils of animals",
"the earliest sediments of oxidized rock",
"impact craters of oxidized-iron asteroids",
"extensive volcanic calderas of similar age"
] | B | train | null | ai2_arc_ARC-Easy |
Louis Pasteur discovered that the bacteria in a substance can be killed by heating the substance for a short period of time. Which of these practices benefited most from Pasteur's discovery? | [
"storing foods for longer periods of time",
"building ovens and other heating devices",
"creating medicines that cure infections",
"transporting living organisms without injuring them"
] | A | train | null | ai2_arc_ARC-Easy |
How do traits of animals such as ear shape, nose shape, and hair color most often get passed to offspring? | [
"sexual reproduction",
"asexual reproduction",
"adaptation",
"instinct"
] | A | train | null | ai2_arc_ARC-Easy |
Why is the ozone content of the stratosphere important to living organisms? | [
"Ozone absorbs infrared radiation from the Sun.",
"Ozone absorbs ultraviolet radiation from the Sun.",
"Ozone is necessary to create oxygen for living things.",
"Ozone in the atmosphere prevents radiation of heat from Earth."
] | B | train | null | ai2_arc_ARC-Easy |
If an environment becomes warmer and drier, the change that would most likely help a species adapt would be an increase in its | [
"amount of body fat.",
"amount of body hair.",
"ability to climb trees.",
"ability to store water."
] | D | train | null | ai2_arc_ARC-Easy |
Thousands of years ago, several species of large mammals existed in North America. These species became extinct not long after the first human settlement of North America. Which human activity most likely contributed to the extinction of these mammals? | [
"hunting",
"waterway pollution",
"habitat destruction",
"competition for resources"
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following is an example of a behavioral adaptation? | [
"hooves of a horse",
"migration of birds",
"a spider web",
"a bee hive"
] | B | train | null | ai2_arc_ARC-Easy |
Which two processes could result in the formation of high mountains with well-rounded peaks? | [
"volcanic eruptions and global warming",
"earthquakes and tidal activity",
"collision of crustal plates and erosion",
"production of greenhouse gases and weathering"
] | C | train | null | ai2_arc_ARC-Easy |
The brown tree snake is a nonnative species found on the South Pacific island of Guam. The brown tree snake population in Guam is so large that it negatively affects the humans there. Which statement best explains why the brown tree snake has flourished in Guam? | [
"There are many animals for food.",
"There are no natural snake predators.",
"The climate is ideal for snake reproduction.",
"The vegetation provides good habitat for hunting."
] | B | train | null | ai2_arc_ARC-Easy |
How are droughts always different from floods? | [
"They have different locations.",
"They happen in different ecosystems.",
"They have different amounts of water.",
"They happen at different times of the year."
] | C | train | null | ai2_arc_ARC-Easy |
Which of the following is a harmful waste material that leaves the blood and travels through the lungs before leaving the body? | [
"CO2.",
"O2.",
"H2O.",
"NaCl."
] | A | train | null | ai2_arc_ARC-Easy |
How are a tree and grass alike? | [
"Both make wood.",
"Both have roots.",
"Both need moonlight.",
"Both have short lives."
] | B | train | null | ai2_arc_ARC-Easy |
What organ system in the human body contains the pituitary gland, hypothalamus gland, and thyroid gland? | [
"reproductive system",
"excretory system",
"endocrine system",
"circulatory system"
] | C | train | null | ai2_arc_ARC-Easy |
Which term describes an organism's ability to maintain a stable internal environment? | [
"reproduction",
"extinction",
"locomotion",
"regulation"
] | D | train | null | ai2_arc_ARC-Easy |
Which of the following can provide the human body with long-term immunity against some diseases? | [
"antibiotics",
"vitamins",
"vaccines",
"red blood cells"
] | C | train | null | ai2_arc_ARC-Easy |
Which event is most likely to increase the genetic variation in a population of organisms? | [
"improved hunting techniques",
"greater environmental stress",
"increased immigration",
"introduced predators"
] | C | train | null | ai2_arc_ARC-Easy |
Where would animals and plants be most affected by a flood? | [
"low areas",
"high areas",
"warm areas",
"cold areas"
] | A | train | null | ai2_arc_ARC-Easy |
Which seismic wave phenomenon, found at structural boundaries, allows scientists to interpret the interior structure of Earth? | [
"refraction of waves",
"generation of new waves",
"transformation of transverse waves into longitudinal waves",
"transformation of mechanical waves into electromagnetic waves"
] | A | train | null | ai2_arc_ARC-Easy |
When ice melts, it becomes a | [
"gas.",
"solid.",
"liquid.",
"plasma."
] | C | train | null | ai2_arc_ARC-Easy |
Which combination of letters could be used as a chemical symbol for an element? | [
"BR",
"Chl",
"Dy",
"FeO"
] | C | train | null | ai2_arc_ARC-Easy |
How is the stratosphere different from the troposphere? | [
"The clouds in the stratosphere produce more rain.",
"The air in the stratosphere has a greater density.",
"The composition of the stratosphere lacks ozone.",
"The temperature of the stratosphere warms at higher altitude."
] | D | train | null | ai2_arc_ARC-Easy |
If a student gets a chemical splashed into an eye, what is the most appropriate first action to be taken? | [
"wipe it with a paper towel",
"call 911 for emergency services",
"have someone go get the school nurse",
"flush the eye with water at an eyewash station"
] | D | train | null | ai2_arc_ARC-Easy |
Which of the following best describes an advantage of using a mass production manufacturing system instead of a custom manufacturing system? | [
"Customers can provide specific feedback to workers.",
"Workers become skilled in all aspects of assembly.",
"Goods can be easily modified for customers.",
"Products can be made at a lower cost."
] | D | train | null | ai2_arc_ARC-Easy |
Which adaptation allows a walrus to stay warm in cold water? | [
"reddish coat",
"bristly mustache",
"wrinkled skin",
"thick layer of blubber"
] | D | train | null | ai2_arc_ARC-Easy |
Ninety-nine percent of the mass of an atom is located in | [
"the outermost energy level.",
"the first energy level.",
"the electron clouds.",
"the nucleus."
] | D | train | null | ai2_arc_ARC-Easy |
Which of the following is a common renewable resource found in deserts? | [
"biodiesel",
"uranium",
"natural gas",
"solar energy"
] | D | train | null | ai2_arc_ARC-Easy |
Beaver dams can cause floods. This statement shows how | [
"animal growth is affected by environmental conditions",
"animal behavior may affect the environment",
"an animal's health depends on its environment",
"an animal's development depends on its environment"
] | B | train | null | ai2_arc_ARC-Easy |
A scientist crosses a red-flowered plant with a white-flowered plant, and all offspring have red flowers. What will most likely result if these red-flowered offspring are crossed with white-flowered plants? | [
"All of the offspring will have red flowers.",
"All of the offspring will have white flowers.",
"The offspring will have either red or white flowers.",
"The offspring will have neither red nor white flowers."
] | C | train | null | ai2_arc_ARC-Easy |
Genetically modified plants with new characteristics have been produced through genetic engineering methods. What impacts have resulted from the use of genetically modified plants? | [
"decreases in farm production",
"decreases in corn, soybean, cottonseed, and canola oils",
"increases in time required to plant, grow, and harvest crops",
"increases in resistance to herbicides, insects, and viral diseases"
] | D | train | null | ai2_arc_ARC-Easy |
Which best explains the importance of nitrogen in the cycling of energy and matter? | [
"Nitrogen increases protein production in plants.",
"Nitrogen decreases protein production in plants.",
"Nitrogen decreases the effectiveness of photosynthesis.",
"Nitrogen increases the effectiveness of photosynthesis."
] | A | train | null | ai2_arc_ARC-Easy |
Which of these mixtures would be easiest to separate? | [
"Fruit salad",
"Powdered lemonade",
"Hot chocolate",
"Instant pudding"
] | A | train | null | ai2_arc_ARC-Easy |
If you wanted to be able to look at the stars, the planets, and the Moon more closely, what should you use? | [
"Telescope",
"Periscope",
"Microscope",
"Magnifying glass"
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following is a correct food chain? | [
"human -> corn -> cow",
"corn -> human -> cow",
"corn -> cow -> human",
"cow -> human -> corn"
] | C | train | null | ai2_arc_ARC-Easy |
Which of these is directly formed as a result of weathering and erosion? | [
"crystals",
"sediments",
"igneous rocks",
"metamorphic rocks"
] | B | train | null | ai2_arc_ARC-Easy |
Most underground caves are formed by the action of water on | [
"granite",
"limestone",
"sandstone",
"shale"
] | B | train | null | ai2_arc_ARC-Easy |
A group of students is taking a hike along a stream channel. One student picks up a rock from the stream and notices that the rock is very smooth and round. Which type of weathering most likely shaped the rock? | [
"abrasion",
"exfoliation",
"fracturing",
"oxidation"
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following is most likely to make a rock crack and crumble? | [
"dew evaporating on the rock",
"leaves decaying on the rock",
"snow melting in a crack in the rock",
"water freezing in a crack in the rock"
] | D | train | null | ai2_arc_ARC-Easy |
Which is the most likely reason why scientific theories change? | [
"public opinions change",
"retiring scientists are replaced",
"more money is spent on science",
"scientists make new observations"
] | D | train | null | ai2_arc_ARC-Easy |
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