question stringlengths 17 586 | choices listlengths 4 4 | answer stringclasses 4 values | split stringclasses 1 value | rationale null | source_dataset stringclasses 1 value |
|---|---|---|---|---|---|
Where does a landslide begin? | [
"a low hill",
"a plain",
"a mountain",
"a basin"
] | C | 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. Aluminum is a nonrenewable natural resource. Which of these methods of aluminum disposal is best for the environment? | [
"burning it",
"recycling it",
"burying it in landfills",
"crushing it before throwing it away"
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following keeps the planets in our solar system in orbit around the Sun? | [
"atmospheric pressure",
"gravitational force",
"electromagnetic energy",
"thermal energy"
] | B | train | null | ai2_arc_ARC-Easy |
Which human organ system primarily exchanges gases between the body and the atmosphere? | [
"excretory",
"nervous",
"skeletal",
"respiratory"
] | D | train | null | ai2_arc_ARC-Easy |
Moving water was the most important factor in forming which of these? | [
"the Grand Canyon",
"San Andreas Fault",
"the Rocky Mountains",
"Mount St. Helens Volcano"
] | A | train | null | ai2_arc_ARC-Easy |
Which list contains only nonliving things? | [
"coins, snakes, birds",
"water, rocks, sunlight",
"rubber ball, plants, house",
"soil, fish, air"
] | B | train | null | ai2_arc_ARC-Easy |
Which type of energy conversion occurs in a flashlight? | [
"chemical to light",
"mechanical to light",
"electrical to chemical",
"mechanical to chemical"
] | A | train | null | ai2_arc_ARC-Easy |
Rocks that contain fragments of bones, shells, and plant remains are most likely | [
"crystals.",
"igneous.",
"sedimentary.",
"metamorphic."
] | C | train | null | ai2_arc_ARC-Easy |
Which reaction is endothermic? | [
"cold pack",
"coal burning",
"striking a match",
"charcoal grill fire"
] | A | train | null | ai2_arc_ARC-Easy |
Which property of water can cause a rock to break apart? | [
"Water boiling at 100°C.",
"Water losing energy slowly.",
"Water expanding as it freezes.",
"Water having a high surface tension."
] | C | train | null | ai2_arc_ARC-Easy |
With a microscope, you see that an object has a cell wall, a chloroplast, and a nucleus. What is being observed? | [
"a plant cell",
"an animal cell",
"a male organism",
"a female organism"
] | A | train | null | ai2_arc_ARC-Easy |
Which instrument would be best to measure the volume of a liquid? | [
"a pan balance",
"a stopwatch",
"a thermometer",
"a graduated cylinder"
] | D | train | null | ai2_arc_ARC-Easy |
Which part of an atom is involved in chemical reactions? | [
"nucleus and its particles",
"negatively-charged particles",
"neutrally-charged particles",
"positively-charged particles"
] | B | train | null | ai2_arc_ARC-Easy |
Which tool is best used to collect information about the weather? | [
"ruler",
"stopwatch",
"thermometer",
"collecting net"
] | C | train | null | ai2_arc_ARC-Easy |
Which of these characteristics best helps scientists classify organisms? | [
"size",
"color",
"gender",
"structure"
] | D | train | null | ai2_arc_ARC-Easy |
Which resource is most likely found in large amounts in forest ecosystems? | [
"iron",
"wood",
"plastic",
"petroleum"
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following best describes a role of mushrooms in ecosystems? | [
"capturing energy from sunlight",
"consuming living plant material",
"taking energy from animal hosts",
"breaking down dead plant material"
] | D | train | null | ai2_arc_ARC-Easy |
A gardener wants to increase the ability of garden soil to retain water. Which of these should the gardener add to the soil? | [
"coarse sand",
"loose gravel",
"nitrogen pellets",
"organic material"
] | D | train | null | ai2_arc_ARC-Easy |
In the life cycle of a fly, which stage comes after the larval stage? | [
"egg",
"adult",
"nymph",
"pupa"
] | D | train | null | ai2_arc_ARC-Easy |
In which example could a thermometer be used to show that heat energy is being transferred? | [
"A piano is played by striking the keys.",
"A shovel is used to move dirt from one place to another.",
"A ball is thrown into the air.",
"A stove is used to boil water in a pan."
] | D | train | null | ai2_arc_ARC-Easy |
What is the most likely function of a turtle's hard shell? | [
"convert energy",
"increase speed",
"provide protection",
"allow for reproduction"
] | C | train | null | ai2_arc_ARC-Easy |
What is the main source of energy that causes water to evaporate from the surface of Earth? | [
"lightning",
"sun",
"gravity",
"wind"
] | B | train | null | ai2_arc_ARC-Easy |
Which terms can be used to describe the properties of both a wave and a particle of light? | [
"charge and volume",
"frequency and mass",
"speed and frequency",
"frequency and density"
] | C | train | null | ai2_arc_ARC-Easy |
To use energy from the Sun to power household appliances, the solar energy must be converted to | [
"heat energy.",
"light energy.",
"nuclear energy.",
"electrical energy."
] | D | train | null | ai2_arc_ARC-Easy |
The yellow-throated longclaw is a bird that lives on the dry savanna of Africa. It looks almost exactly like another bird, the western meadowlark of North America. Although the birds look very similar, they are not even in the same taxonomic family. Scientists think the birds look alike because the two species developed under similar environmental pressures, even though they developed thousands of miles apart. Which process does their development demonstrate? | [
"sexual selection",
"disruptive selection",
"divergent evolution",
"convergent evolution"
] | D | train | null | ai2_arc_ARC-Easy |
The reaction that releases energy for use by the cell occurs in which site? | [
"Golgi apparatus",
"endoplasmic reticulum",
"cytoplasmic membrane",
"mitochondrial membrane"
] | D | train | null | ai2_arc_ARC-Easy |
Why do doctors suggest that people get a flu vaccine each year? | [
"Viruses replicate more rapidly over time.",
"Viruses can mutate from year to year.",
"Vaccines are absorbed by the body after a year.",
"Vaccines get stronger over time."
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following events involves a consumer and producer in a food chain? | [
"A cat eats a mouse.",
"A deer eats a leaf.",
"A hawk eats a mouse.",
"A snake eats a rat."
] | B | train | null | ai2_arc_ARC-Easy |
The change from day to night on Earth can be explained by | [
"the movement of the Sun.",
"the rotation of Earth.",
"the movement of the Moon.",
"the tilt of Earth."
] | B | train | null | ai2_arc_ARC-Easy |
Which part of a bicycle BEST moves in a circle? | [
"Seat",
"Frame",
"Foot pedal",
"Kickstand"
] | C | train | null | ai2_arc_ARC-Easy |
When animals use energy, what is always produced? | [
"sugar",
"heat",
"oxygen",
"starch"
] | B | train | null | ai2_arc_ARC-Easy |
Which type of rock is formed when hot lava cools? | [
"coal",
"igneous",
"limestone",
"metamorphic"
] | B | train | null | ai2_arc_ARC-Easy |
Which environmental factor would most likely prevent an orange tree from surviving in the desert? | [
"the lack of moisture",
"the high levels of heat",
"the extra amount of wind",
"the low levels of sunlight"
] | A | train | null | ai2_arc_ARC-Easy |
After a rainstorm, a big pile of rocks blocks part of a mountain road. Which event most likely caused the rocks to move onto the road? | [
"a tsunami",
"a blizzard",
"a landslide",
"a hurricane"
] | C | train | null | ai2_arc_ARC-Easy |
What would be the result of adding one proton to an atom? | [
"one electron would be added",
"the atomic number would change",
"the total mass of the atom would decrease",
"the electrical charge would become neutral"
] | B | train | null | ai2_arc_ARC-Easy |
What would be the best source to find information about DNA testing? | [
"local newspaper",
"TV news report",
"scientific journals",
"world almanac"
] | C | train | null | ai2_arc_ARC-Easy |
In what section of Earth do earthquakes happen? | [
"crust",
"mantle",
"inner core",
"outer core"
] | A | train | null | ai2_arc_ARC-Easy |
A complete fossil has been found of a type of bird that cannot be identified. What can most likely be determined about the bird from the fossil? | [
"The bird lived for a very short time.",
"The bird lived in a dry environment.",
"The bird existed at one time but is now extinct.",
"The bird was not well preserved during the process of fossilization."
] | C | train | null | ai2_arc_ARC-Easy |
When large areas of the rainforests are cleared and burned, climate can be affected. Which best explains how rainforest destruction can contribute to the greenhouse effect? | [
"by threatening native plants and animals",
"by increasing the rate of soil erosion",
"by increasing the water levels in oceans",
"by releasing carbon into the atmosphere"
] | D | train | null | ai2_arc_ARC-Easy |
Which information is used in a station model? | [
"yearly average precipitation",
"daily average barometric pressure",
"number of lightning strikes",
"wind direction in a particular point and time"
] | D | train | null | ai2_arc_ARC-Easy |
Which part of a plant is most responsible for using energy from the Sun to produce food for the plant? | [
"flower",
"leaf",
"root",
"stem"
] | B | train | null | ai2_arc_ARC-Easy |
Which natural formation is the best example of the result of both constructive and destructive forces such as weathering, erosion, and deposition of sediment? | [
"The Mid-Atlantic Ridge",
"The Grand Canyon",
"The Mojave Desert",
"The Himalayan Mountains"
] | B | train | null | ai2_arc_ARC-Easy |
Which characteristic helps a fox find food? | [
"sense of smell",
"thick fur",
"long tail",
"pointed teeth"
] | A | train | null | ai2_arc_ARC-Easy |
Tay-Sachs disease is a recessive genetic disorder. If only one gene is present, an individual is a carrier. What is the probability of two healthy Tay-Sachs carriers having a child that has the disease? | [
"0%",
"25%",
"50%",
"75%"
] | B | train | null | ai2_arc_ARC-Easy |
Two identical lamps contain the same amount of different types of oil. They are allowed to burn until all the oil has been burned. Which measurement will best provide the total difference in chemical energy between the two oils? | [
"final weight of lamp",
"original volume of oil",
"time it took for lamps to use oil",
"height of flame produced by lamp"
] | C | train | null | ai2_arc_ARC-Easy |
Which disease is a result of abnormal cell division? | [
"AIDS",
"cancer",
"chicken pox",
"common cold"
] | B | train | null | ai2_arc_ARC-Easy |
During which season of the year would a rabbit's fur be thickest? | [
"fall",
"spring",
"summer",
"winter"
] | D | train | null | ai2_arc_ARC-Easy |
Which property of an element is determined by adding the number of protons and number of neutrons? | [
"atomic mass",
"atomic radius",
"electrical charge",
"electrical potential"
] | A | train | null | ai2_arc_ARC-Easy |
Which of these cycles takes 24 hours? | [
"Earth rotating on its axis",
"Earth revolving around the Sun",
"the Moon rotating on its axis",
"the Moon revolving around Earth"
] | A | train | null | ai2_arc_ARC-Easy |
Lemon juice turns litmus paper red, is corrosive and tastes sour. Lemon juice is classified as | [
"an acid.",
"a base.",
"an element.",
"More information is needed to classify lemon juice."
] | A | train | null | ai2_arc_ARC-Easy |
A child walks across a carpet and generates an electrical charge. The child will get a slight shock by touching a | [
"metal doorknob.",
"plastic toy.",
"rubber ball.",
"wooden block."
] | A | train | null | ai2_arc_ARC-Easy |
Which animal eats only plants? | [
"Cat",
"Dog",
"Lion",
"Rabbit"
] | D | train | null | ai2_arc_ARC-Easy |
A newborn kangaroo has the ability to crawl into its mother's pouch to drink milk. This is an example of | [
"migration.",
"an instinct.",
"hibernation.",
"a learned behavior."
] | B | train | null | ai2_arc_ARC-Easy |
Which characteristic is shared by Earth and the Moon? | [
"glaciers",
"flowing water",
"an atmosphere that contains oxygen",
"an orbit created by the force of gravity"
] | D | train | null | ai2_arc_ARC-Easy |
The Piedmont and Coastal Plains regions in Maryland produce crops such as corn, soybeans, wheat, tobacco, tomatoes, and apples. Which environmental factor most likely influences which crops are grown in these regions? | [
"soil quality",
"wind speeds",
"bird migration",
"water temperature"
] | A | train | null | ai2_arc_ARC-Easy |
Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment? | [
"circulatory",
"excretory",
"immune",
"respiratory"
] | D | train | null | ai2_arc_ARC-Easy |
Which of these will always produce a magnetic field? | [
"a bar of steel",
"a bar of aluminum",
"an electric current",
"an electric charge"
] | C | train | null | ai2_arc_ARC-Easy |
The periodic table provides information about the atoms of different elements. Which is a characteristic of an atom determines what element it is? | [
"number of neutrons",
"number of protons",
"state of matter",
"atomic mass"
] | B | train | null | ai2_arc_ARC-Easy |
Joel made some measurements and recorded this data: Sample 1 - 45 mL Sample 2 - 15 mL Sample 3 - 30 mL Sample 4 - 20 mL Which of these tools would most likely have been used to obtain these measurements? | [
"test tube",
"meter stick",
"spring scale",
"graduated cylinder"
] | D | train | null | ai2_arc_ARC-Easy |
A teacher demonstrates a chemical reaction. A student observes that the test tube in which the reaction occurs becomes warm. What is the source of the thermal energy generated by the reaction? | [
"energy stored in the reactants",
"breaking bonds of the reactants",
"kinetic energy absorbed by the reaction",
"potential energy absorbed by the reaction"
] | A | train | null | ai2_arc_ARC-Easy |
Deer provide food for wolves. How does this relationship also benefit the deer herd? | [
"by protecting deer from other predators",
"by controlling the deer population",
"by decreasing diversity within the herd",
"by protecting the deer from disease"
] | B | train | null | ai2_arc_ARC-Easy |
In what way does society benefit from research on diseases? | [
"New illnesses will develop.",
"Doctors will visit their patients at home.",
"More families will move closer to hospitals.",
"Many illnesses will be prevented or cured."
] | D | train | null | ai2_arc_ARC-Easy |
Which energy transformation takes place in a gasoline lawn mower? | [
"potential energy to electrical energy",
"electrical energy to potential energy",
"kinetic energy to chemical energy",
"chemical energy to mechanical energy"
] | D | train | null | ai2_arc_ARC-Easy |
Which of the following can only be seen with a telescope? | [
"the moon-like phases of Venus",
"the phases of Earth's moon",
"a lunar eclipse",
"a solar eclipse"
] | A | train | null | ai2_arc_ARC-Easy |
The rocks that form most of the Sierra Nevada are granitic rocks. This means that the mountains were most likely formed by | [
"strike-slip faults.",
"transform boundaries.",
"volcanic activity.",
"land subsidence."
] | C | train | null | ai2_arc_ARC-Easy |
In 1872, the United States created a national park called Yellowstone. The park includes more than two million acres in the three states of Idaho, Montana, and Wyoming. Which statement best explains why national parks have a positive effect on ecosystems? | [
"National parks limit people from seeing wildlife.",
"National parks limit mining, logging, and hunting.",
"National parks protect land for farmers and ranchers.",
"National parks protect land for people to build houses."
] | B | train | null | ai2_arc_ARC-Easy |
According to the endosymbiotic theory, double-membrane mitochondria originated as a result of some larger eukaryotic cells with flexible membranes engulfing smaller prokaryotic cells. Which of these explains where the outer layer of the double membrane of the mitochondria originated? | [
"the plasma membrane of the eukaryotic host",
"the nuclear membrane of the eukaryotic host",
"the ribosomes of the engulfed prokaryotic cell",
"the lysosomes of the engulfed prokaryotic cell"
] | A | train | null | ai2_arc_ARC-Easy |
Toni got a cut on her arm while playing in a softball game. A few weeks later, the cut was healed. Which process is most responsible for repairing the cut? | [
"signals transported by nerve cells",
"exchange of oxygen in the lungs",
"transport of waste by blood",
"reproduction of skin cells"
] | D | train | null | ai2_arc_ARC-Easy |
A pot of cold water was heated on a stove until the water boiled. Which of the following best explains why the water was able to boil? | [
"The hot stove absorbed cold from the pot.",
"The cold water absorbed heat from the pot.",
"The hot stove gave off heat to the surrounding air.",
"The cold water gave off cold to the surrounding air."
] | B | train | null | ai2_arc_ARC-Easy |
A spring-fed stream forms a pond that contains watercress plants, minnows, and crayfish. The pond receives 5 hours of direct sunlight every day. Which of the following is an abiotic factor in this ecosystem? | [
"the pond water",
"the watercress plants",
"the minnows",
"the crayfish"
] | A | train | null | ai2_arc_ARC-Easy |
A modern theory of the origin of the universe proposes that the first atoms formed were primarily atoms of which element? | [
"iron",
"carbon",
"helium",
"hydrogen"
] | D | train | null | ai2_arc_ARC-Easy |
A star is a large astronomical body that | [
"reflects light.",
"condenses light.",
"emits light.",
"absorbs light."
] | C | train | null | ai2_arc_ARC-Easy |
What happens to water when it boils? | [
"It changes color.",
"It becomes heavier.",
"It changes into water vapor.",
"It stops bubbling."
] | C | train | null | ai2_arc_ARC-Easy |
Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time? | [
"50 g",
"75 g",
"100 g",
"125 g"
] | C | train | null | ai2_arc_ARC-Easy |
A student has two solid samples of the same substance. Which property do the substances most likely have in common? | [
"density",
"mass",
"shape",
"volume"
] | A | train | null | ai2_arc_ARC-Easy |
In which object does chemical energy most likely transform into electrical energy? | [
"a candle",
"a mirror",
"a flashlight",
"a television"
] | C | train | null | ai2_arc_ARC-Easy |
What is the mass number of an atom with 17 protons, 17 electrons, and 18 neutrons? | [
"17",
"34",
"35",
"52"
] | C | train | null | ai2_arc_ARC-Easy |
Some machines can remove the salt that is in seawater. How does removing salt from seawater most help people? | [
"provides useable drinking water",
"creates cleaner water for rivers",
"enables more fish to live in lake water",
"allows more plants to grow along rivers"
] | A | train | null | ai2_arc_ARC-Easy |
Which body system is most affected by a disease that causes the bones to become weak and brittle? | [
"excretory",
"muscular",
"skeletal",
"nervous"
] | C | train | null | ai2_arc_ARC-Easy |
Why can a small fire be put out by placing a heavy blanket over it? | [
"This lowers the temperature.",
"This makes the flames smaller.",
"This absorbs the burning substance.",
"This keeps oxygen from reaching the fire."
] | D | train | null | ai2_arc_ARC-Easy |
There is a river at the base of Mount Tom. In the spring the water level is usually very high. In the summer it is lower. The higher level of water during the spring comes from | [
"hurricanes.",
"melting snow.",
"tornadoes.",
"evaporating water."
] | B | train | null | ai2_arc_ARC-Easy |
Earthquake waves are recorded by seismograph machines. What does an earthquake wave transmit? | [
"energy",
"light",
"particles",
"speed"
] | A | train | null | ai2_arc_ARC-Easy |
The snowshoe hare was once common in Maryland. In 1986, researchers in the state noted that the snowshoe hare was no longer found in Maryland. Which statement best explains why the snowshoe hare is no longer found in Maryland? | [
"Water quality has improved.",
"There are too many trees.",
"The temperature is too cold.",
"Housing developments have replaced fields."
] | D | train | null | ai2_arc_ARC-Easy |
In the initial stages of manned space exploration, scientists needed to address adequate nutrition to provide astronauts with energy throughout the mission. Which of these criteria could not be used when considering food and energy for astronauts during manned space flights? | [
"history of space food",
"food crumbs in zero gravity",
"rehydration of certain foods",
"food storage for long periods"
] | A | train | null | ai2_arc_ARC-Easy |
Which is the best example of evaporation? | [
"raindrops freezing",
"an ice cube melting",
"a puddle drying in the sun",
"a sponge soaking up water"
] | C | train | null | ai2_arc_ARC-Easy |
In a forest community, trees produce leaves that can be eaten by deer. The leaves also fall to the forest floor during autumn. Fungi break the leaves down into nutrients that enter the soil. What is the decomposer in this forest community? | [
"the soil",
"the deer",
"the trees",
"the fungi"
] | D | train | null | ai2_arc_ARC-Easy |
Compared to Earth, the Moon is | [
"drier.",
"larger.",
"heavier.",
"brighter."
] | A | train | null | ai2_arc_ARC-Easy |
What process forms an image in a mirror? | [
"absorbing light",
"reflecting light",
"refracting light",
"transmitting light"
] | B | train | null | ai2_arc_ARC-Easy |
Which is an example of a physical change? | [
"ice melting",
"nail rusting",
"bread baking",
"wood burning"
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following describes an object that must have a net negative charge? | [
"It contains more molecules than atoms.",
"It contains more electrons than protons.",
"It is carrying an electric current.",
"It is made of metal."
] | B | train | null | ai2_arc_ARC-Easy |
Rocks found on Earth are classified as sedimentary, metamorphic, or igneous based on | [
"where the rocks were found.",
"how the rocks were formed.",
"the composition of the rocks.",
"the color and shape of the rocks."
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following is formed when two elements combine chemically? | [
"an atom",
"a compound",
"an electron",
"a mixture"
] | B | train | null | ai2_arc_ARC-Easy |
Which of the following is the most important safety practice when using a rock hammer on a geology field trip? | [
"wear gloves while breaking rocks",
"wear goggles while breaking rocks",
"have a bucket of sand in case of sparks",
"have a clean eye-wash station available"
] | B | train | null | ai2_arc_ARC-Easy |
To which organ system do the esophagus, liver, pancreas, small intestine, and colon belong? | [
"reproductive system",
"excretory system",
"digestive system",
"endocrine system"
] | C | train | null | ai2_arc_ARC-Easy |
When sodium hydroxide reacts with a copper nitrate solution, the reaction vessel needs to be kept on ice to slow down the reaction. What best describes this reaction? | [
"an exothermic reaction that absorbs energy",
"an exothermic reaction that releases energy",
"an endothermic reaction that absorbs energy",
"an endothermic reaction that releases energy"
] | B | train | null | ai2_arc_ARC-Easy |
Scientists measured the patterns of spectral lines given off by distant galaxies and concluded that almost all of these galaxies are moving away from Earth. What did the scientists observe directly? | [
"a shift toward longer wavelengths of light",
"a shift toward shorter wavelengths of light",
"the absence of wavelengths in the visible light range",
"the compression of wavelengths in the visible light range"
] | A | train | null | ai2_arc_ARC-Easy |
When a multicellular organism is damaged, it will repair itself as | [
"it mutates.",
"the cells work together.",
"the cells move.",
"it makes its own food."
] | B | train | null | ai2_arc_ARC-Easy |
Genes are located on chromosomes which are composed of | [
"DNA.",
"RNA.",
"ATP.",
"ADP."
] | A | train | null | ai2_arc_ARC-Easy |
Which of the following best describes the number of chromosomes in a normal human liver cell? | [
"23 pairs of chromosomes",
"46 different types of chromosomes",
"46 male chromosomes and 46 female chromosomes",
"23 original chromosomes and 23 duplicate chromosomes"
] | A | train | null | ai2_arc_ARC-Easy |
A student measures the growth of a group of plants given different amounts of fertilizer. Which data display should the student use to compare the growth of the plants? | [
"bar graph",
"scatterplot",
"line graph",
"pie chart"
] | C | train | null | ai2_arc_ARC-Easy |
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