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train/1000 | Is a gold bracelet a solid, a liquid, or a gas? | [
"a gas",
"a solid",
"a liquid"
] | 1 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A gold bracelet is a solid. You can wrap a gold bracelet around your wrist. But the bracelet will still have a size and shape of its own. | |
train/1001 | Which of these states is farthest south? | [
"West Virginia",
"Maine",
"Louisiana",
"Idaho"
] | 2 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the south arrow is pointing. Louisiana is farthest south. | |
train/1002 | Which country is highlighted? | [
"The Bahamas",
"Grenada",
"Saint Lucia",
"Saint Vincent and the Grenadines"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | ||
train/1003 | What is the name of the colony shown? | [
"Maryland",
"Pennsylvania",
"Washington, D.C.",
"North Carolina"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Maryland. | ||
train/1004 | Can Microcebus rufus cells make their own food? | [
"yes",
"no"
] | 1 | This organism is Microcebus rufus. It is a member of the animal kingdom.
Microcebus rufus is commonly called a brown mouse lemur. Humans, chimpanzees, gorillas, monkeys, and lemurs are all primates. A brown mouse lemur is one of the smallest primates in the world! | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Microcebus rufus is an animal. Animal cells cannot make their own food. Animals get their food by digesting other organisms. |
train/1005 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/1006 | Which animal's mouth is also adapted for bottom feeding? | [
"armored catfish",
"discus"
] | 0 | Leopard sharks eat organisms such as crabs, shrimp, and fish. They are bottom feeders. Bottom feeders find their food at the bottom of rivers, lakes, and the ocean.
The 's mouth is located on the underside of its head and points downward. Its mouth is adapted for bottom feeding.
Figure: leopard shark. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the leopard shark.
The leopard shark's mouth is located on the underside of its head and points downward. Its mouth is adapted for bottom feeding. The leopard shark uses its mouth to find food hidden in the sediment of the ocean floor.
Now look at each animal. Figure out which animal has a simila... |
train/1007 | Which country is highlighted? | [
"Solomon Islands",
"Nauru",
"New Zealand",
"Vanuatu"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Vanuatu.
Does Vanuatu have any territorial disputes?
Vanuatu claims to own Matthew and Hunter Islands, which are disputed islands. In other words, multiple countries or groups claim that the islands rightfully belong to them.
France has controlled the islands since 1929. But shortly after gaining indepe... | ||
train/1008 | Which continent is highlighted? | [
"North America",
"South America",
"Asia"
] | 0 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is North America. | |
train/1009 | Is tillite a mineral? | [
"yes",
"no"
] | 1 | Tillite has the following properties:
no fixed crystal structure
found in nature
not made by living things
not a pure substance
solid | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Tillite does not have all the properties of a mineral. So, tillite is not a mineral. |
train/1010 | What can Clare and Henry trade to each get what they want? | [
"Henry can trade his broccoli for Clare's oranges.",
"Clare can trade her tomatoes for Henry's broccoli.",
"Henry can trade his almonds for Clare's tomatoes.",
"Clare can trade her tomatoes for Henry's sandwich."
] | 1 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Clare and Henry open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Clare wanted br... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Clare wanted broccoli in her lunch and Henry was hoping for tomatoes. Look at the labeled part of the images.
Clare has tomatoes. Henry has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | |
train/1011 | Which property matches this object? | [
"flexible",
"sticky"
] | 0 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A flexible object can be folded or bent without breaking easily. The slippers are flexible.
A sticky object can attach or stick to other things. The slippers are not sticky. |
train/1012 | Which animal is also adapted to be camouflaged in a sandy desert? | [
"lichen katydid",
"thorny devil"
] | 1 | Fennec foxes live in the Sahara Desert of Africa. The is adapted to be camouflaged in a sandy desert.
Figure: fennec fox. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the fennec fox.
The fennec fox has sand-colored fur covering its skin. It is adapted to be camouflaged in a sandy desert. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The thorny devil has a yellow-and-brown body. It is adapted t... |
train/1013 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 2 are closer together than the magnets in Pair 1. So, the magnetic force is stronger in Pair 2 than in Pair 1. |
train/1014 | Which of these organisms contains matter that was once part of the persimmon tree? | [
"bolete fungus",
"silver maple"
] | 0 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the persimmon tree.There are four paths matter can take from the persimmon tree to the parasol fungus: persimmon tree->black bear->parasol fungus. persimmon tree->pine vole->parasol fun... |
train/1015 | Which rhetorical appeal is primarily used in this ad? | [
"logos (reason)",
"pathos (emotion)",
"ethos (character)"
] | 0 | closed choice | grade12 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals.
Appeals to ethos, or character, show the writer or speaker as trustworthy, authoritative, or sharing important values with the audience. An ad that appe... | The ad appeals to logos, or reason, by emphasizing the specific amount of money that customers could save by switching to the advertised brand of car insurance. | |
train/1016 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2.",
"The magnetic force is stronger in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. |
train/1017 | Identify the question that Dominic's experiment can best answer. | [
"Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?",
"Does the type of flour used in the muffins affect the number of muffins that turn brown after 30 minutes in the oven?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Dominic made six batches of muffins over the course of one day. He used whole wheat flour in three of the batches and white flour in the other three batches. He divided the batter into muffin tins, using two ounces of b... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/1018 | Which is this organism's scientific name? | [
"water buffalo",
"Bubalus bubalis"
] | 1 | This organism is a water buffalo. It is also called Bubalus bubalis. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Bubalus bubalis is written in italics. The first word is capitalized, and the second word is not.
So, Bubalus bubalis is the scientific name. |
train/1019 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"hawk moth",
"strawberry poison frog"
] | 1 | Flamboyant cuttlefish are poisonous animals with brightly colored skin. The bright colors serve as a warning sign that the animal is poisonous. The 's skin is adapted to ward off predators.
Figure: flamboyant cuttlefish. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the flamboyant cuttlefish.
The flamboyant cuttlefish has a poisonous body with brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the flamboyant cuttlefish is poisonous.
Now look at each animal. Figure out which animal has a similar ad... |
train/1020 | Complete the sentence.
is what happens when pollen lands on a female cone. | [
"Pollination",
"Fertilization",
"Photosynthesis"
] | 0 | Male cones make pollen. Wind can blow pollen from a male cone to a female cone. | closed choice | grade4 | natural science | biology | Plants | Describe and construct conifer life cycles | Conifers are plants that grow cones. Conifers use their cones to reproduce, or make new plants like themselves. How do conifers use their cones to reproduce?
Conifers can grow male and female cones. Male cones make pollen, and female cones make eggs. Pollination is what happens when wind blows pollen from male cones on... | When pollen lands on a female cone, it is called pollination. This photograph shows wind blowing pollen from the male cones on a Japanese cedar tree.
Photosynthesis happens when plants use water, carbon dioxide, and energy from sunlight to make sugar. |
train/1021 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"blue poison dart frog",
"gray tree frog"
] | 0 | Fire salamanders have poisonous glands in their brightly colored skin. The bright colors serve as a warning sign that the animal is poisonous. The 's skin is adapted to ward off predators.
Figure: fire salamander. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the fire salamander.
The fire salamander has a poisonous body with brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the fire salamander is poisonous.
Now look at each animal. Figure out which animal has a similar adaptation.
The blue... |
train/1022 | What is the capital of Washington? | [
"Olympia",
"Seattle",
"Spokane",
"Juneau"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | ||
train/1023 | Is breccia a mineral or a rock? | [
"rock",
"mineral"
] | 0 | Breccia has the following properties:
not made by organisms
found in nature
solid
made up of coarse and fine sediment grains
not a pure substance
no fixed crystal structure | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of breccia match the properties of a rock. So, breccia is a rock. |
train/1024 | Is corn syrup a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"a liquid"
] | 2 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | Corn syrup is a liquid. A liquid takes the shape of any container it is in.
If you pour corn syrup into a container, the corn syrup will take the shape of that container. But the corn syrup will still take up the same amount of space. | |
train/1025 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade3 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. |
train/1026 | Which of these organisms contains matter that was once part of the lichen? | [
"grizzly bear",
"snowy owl",
"bilberry",
"brown lemming"
] | 0 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade7 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the lichen.
The only arrow pointing to the snowy owl starts from the short-tailed weasel. The only arrow pointing to the short-tailed weasel starts from the brown lemming. The brown lem... |
train/1027 | What is the name of the colony shown? | [
"Kentucky",
"New Hampshire",
"Pennsylvania",
"Maryland"
] | 1 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Hampshire.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | ||
train/1028 | Which country is highlighted? | [
"the Federated States of Micronesia",
"Kiribati",
"Papua New Guinea",
"New Zealand"
] | 2 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Papua New Guinea.
Why does Papua New Guinea share its island with another country?
Papua New Guinea takes up the eastern half of the island of New Guinea. The western half is part of Indonesia, an Asian country.
Beginning in the 17 th century, several countries took control of different parts of the isl... | ||
train/1029 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... |
train/1030 | Which property do these two objects have in common? | [
"breakable",
"rough"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A breakable object will break into pieces if you drop it. Neither of the objects are breakable.
A rough object feels scratchy when you touch it. Both objects are rough.
The property that both objects have in common is rough. |
train/1031 | What is the name of the colony shown? | [
"Virginia",
"West Virginia",
"North Carolina",
"South Carolina"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | ||
train/1032 | Is halite a mineral? | [
"yes",
"no"
] | 0 | Halite has the following properties:
fixed crystal structure
solid
found in nature
made of a pure substance called sodium chloride
not made by organisms | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Halite has all the properties of a mineral. So, halite is a mineral. |
train/1033 | Is the following statement about our solar system true or false?
Of the four smallest planets, two are made mainly of gas. | [
"true",
"false"
] | 1 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To decide which four planets are the smallest, look at the volumes and compare the exponents. The volumes of Mercury, Venus, Earth, and Mars have the smallest exponents. So, these four planets are the smallest.
These four planets are made mainly of rock. So, of the four smallest planets, none are made mainly of gas. |
train/1034 | Which of these continents does the prime meridian intersect? | [
"North America",
"Antarctica",
"Australia"
] | 1 | closed choice | grade5 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Antarctica. It does not intersect North America or Australia. | |
train/1035 | Which material is this figurine made of? | [
"clay",
"concrete"
] | 0 | closed choice | grade3 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the figurine.
The figurine is made of clay.
Clay is a soft, flexible material. When clay dries out, it can become very hard. | |
train/1036 | What is the capital of Nevada? | [
"Salem",
"Carson City",
"Reno",
"Las Vegas"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | ||
train/1037 | Select the organism in the same genus as the mouflon. | [
"Ovis dalli",
"Alouatta palliata",
"Castor canadensis"
] | 0 | This organism is a mouflon. Its scientific name is Ovis orientalis. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A mouflon's scientific name is Ovis orientalis. The first word of its scientific name is Ovis.
Ovis dalli is in the genus Ovis. The first word of its scientific name is Ovis. So, Ovis dalli and Ovis orientalis are in the same genus.
Castor canadensis is in the genus Castor. The first word of its scientific name is Cast... |
train/1038 | What is the capital of Georgia? | [
"Fayetteville",
"Savannah",
"Athens",
"Atlanta"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Atlanta is the capital of Georgia. | ||
train/1039 | Which of these states is farthest north? | [
"Nebraska",
"South Carolina",
"Oklahoma",
"West Virginia"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Nebraska is farthest north. | |
train/1040 | Which continent is highlighted? | [
"South America",
"Europe",
"Australia"
] | 2 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Australia. | |
train/1041 | Which material is this canoe made of? | [
"clay",
"wood"
] | 1 | closed choice | grade3 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the canoe.
The canoe is made of wood. | |
train/1042 | Select the fish below. | [
"painted stork",
"tiger shark"
] | 1 | Fish live underwater. They have fins, not limbs. A goldfish is an example of a fish. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A painted stork is a bird. It has feathers, two wings, and a beak.
A tiger shark is a fish. It lives underwater. It has fins, not limbs. |
train/1043 | Which of the following fossils is older? Select the more likely answer. | [
"feather",
"fern"
] | 0 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is older:
The feather fossil is in a deeper layer in the rock sequence than the fern fossil. So, the feather fossil is most likely older than the fern fossil. |
train/1044 | Which property matches this object? | [
"rough",
"soft"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A soft object changes shape when you squeeze it. The flower petals are soft.
A rough object feels scratchy when you touch it. The flower petals are not rough. |
train/1045 | Which ocean is highlighted? | [
"the Southern Ocean",
"the Atlantic Ocean",
"the Arctic Ocean",
"the Pacific Ocean"
] | 1 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Atlantic Ocean. | |
train/1046 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Granada Province.
Granada Province is in southern Spain. A farmer there noticed that large gray clouds covered the mountains every day last week.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Granada Province is in southern Spain. A farmer there noticed that large gray clouds covered the mountains every day last week.
The underlined part of the passage tells you about the clouds seen last week in Granada Province. This passage describes the atmosphere at a certain place and time.... |
train/1047 | Which animal's neck is also adapted for reaching high branches? | [
"dromedary camel",
"warthog"
] | 0 | Giraffes eat leaves and twigs. The 's neck is adapted for reaching branches that are high above the ground.
Figure: giraffe. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's neck is one example of an adaptation. Animals' necks can be adapted in different ways. For example, a large frilled neck might help an animal appear dangerous ... | Look at the picture of the giraffe.
Now look at each animal. Figure out which animal has a similar adaptation.
The dromedary camel has a long neck. Its neck is adapted for reaching high branches.
The warthog has a short neck. Its neck is not adapted for reaching high branches. The warthog eats grasses, roots, and bulbs... |
train/1048 | Which animal's limbs are also adapted for swimming? | [
"humpback whale",
"giraffe"
] | 0 | s live along the west coast of North America. They spend a lot of time hunting fish at sea.
The has four flippers for limbs. Its limbs are adapted for swimming.
Figure: California sea lion. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the California sea lion.
The California sea lion uses its flippers to push itself through water. The flippers can also help it change direction while swimming.
Now look at each animal. Figure out which animal has a similar adaptation.
The humpback whale has flippers. Its limbs are adapted for swi... |
train/1049 | Which property do these two objects have in common? | [
"sticky",
"colorful"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A colorful object has one or more bright colors. Both objects are colorful.
A sticky object can stick to other things. Neither of the objects are sticky.
The property that both objects have in common is colorful. |
train/1050 | What is the capital of Delaware? | [
"Cheyenne",
"Austin",
"Dover",
"Georgetown"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | ||
train/1051 | Which country is highlighted? | [
"Tonga",
"the Marshall Islands",
"Fiji",
"Tuvalu"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | ||
train/1052 | What label shows the territory of Macedonia? | [
"D",
"B",
"A",
"C"
] | 3 | Throughout the following questions, you will learn about a man who became known as Alexander the Great. Alexander the Great created the Macedonian Empire in the late 300s BCE.
Before it was an empire, Macedonia was a kingdom in southern Europe. Macedonia bordered ancient Greece and was located along the Aegean (ah-GEE-... | closed choice | grade6 | social science | world-history | Greece | Alexander the Great | Look at the map. Macedonia is labeled.
The map shows that Macedonia bordered Greece in southern Europe. Macedonia was also located along the coast of the Aegean Sea. | |
train/1053 | Which animal's mouth is also adapted to eat plant matter? | [
"orca",
"zebra"
] | 1 | Blackbucks are herbivores, or plant eaters. They eat mostly grass. The 's mouth is adapted to grind up and eat plant matter.
Figure: blackbuck. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the blackbuck.
The blackbuck has long jaws and flat teeth. Its mouth is adapted to eat plant matter. The long jaws can help the blackbuck reach grass. The flat teeth can help it cut and grind up the food into soft pieces it can swallow.
Now look at each animal. Figure out which animal has a simil... |
train/1054 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/1055 | Which property do these three objects have in common? | [
"sour",
"hard",
"translucent"
] | 2 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A translucent object lets light through. But you cannot see clearly through a translucent object. All three objects are translucent.
A lemon has a sour taste. The ocean water and the honey are not sour.
A hard object does not change shape when presse... |
train/1056 | Which country is highlighted? | [
"Trinidad and Tobago",
"Grenada",
"Saint Kitts and Nevis",
"Saint Vincent and the Grenadines"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Grenada. | ||
train/1057 | Select the amphibian below. | [
"arroyo toad",
"clownfish",
"blue-footed booby",
"sea otter"
] | 0 | Amphibians have moist skin and begin their lives in water.
Amphibians are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A red-spotted newt is an example of an amphibian. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A blue-footed booby is a bird. It has feathers, two wings, and a beak.
Blue-footed boobies live on tropical islands in the Pacific Ocean.
A sea otter is a mammal. It has fur and feeds its young milk.
Sea otters have very thick fur. Their fur keeps them warm in cold water.
An arroyo toad is an amphibian. It has moist sk... |
train/1058 | Which country is highlighted? | [
"the Marshall Islands",
"Solomon Islands",
"Nauru",
"Palau"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Marshall Islands.
Does the Marshall Islands have any territorial disputes?
The Marshall Islands claims to own Wake Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States claimed Wake Island in 1899 and has... | ||
train/1059 | Which of the following could Keith's test show? | [
"the amount of sunlight the roof would get throughout the year",
"how many solar panels could fit on each side of the roof",
"which side of the roof got more sun over one day"
] | 2 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/1060 | Which material is these shoes made of? | [
"leather",
"ceramic"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the shoes.
The shoes are made of two different materials. The tops are made of leather, and the soles are made of rubber. | |
train/1061 | Which of the following could Terrence's test show? | [
"if at least 20% of the park would be shaded by trees in each design",
"which design would have the greatest distance between the concert area and the road",
"which design would have the least traffic noise in the concert area"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/1062 | Which specific humidity level was measured within the outlined area shown? | [
"10 grams of water vapor per kilogram of air",
"13 grams of water vapor per kilogram of air",
"20 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on June 12, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United S... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
20 grams of water vapor per kilogram... |
train/1063 | Which country is highlighted? | [
"Tonga",
"Tuvalu",
"Samoa",
"Fiji"
] | 0 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | ||
train/1064 | Which of the following organisms is the decomposer in this food web? | [
"bilberry",
"Arctic fox",
"earthworm"
] | 2 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade6 | natural science | biology | Ecological interactions | Interpret food webs I | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Decomposers help break down dead organisms into simpler matter, such as nutrients. These nutrients can then help plants and other organisms grow. In a food web, there is an arrow pointing from another organism to a decomposer. There are no arrows pointing from a decomposer to another organism.
The earthworm does not ha... |
train/1065 | Select the chemical formula for this molecule. | [
"C2I4",
"CI4",
"C4I",
"CI"
] | 1 | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Identify chemical formulas for ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | C is the symbol for carbon. According to the legend, carbon atoms are shown in dark gray. I is the symbol for iodine. According to the legend, iodine atoms are shown in dark purple. This ball-and-stick model shows a molecule with one carbon atom and four iodine atoms. The chemical formula will contain the symbols C and... | |
train/1066 | In this experiment, which were part of an experimental group? | [
"the sections of wall scrubbed with water only",
"the sections of wall scrubbed with water and baking soda"
] | 1 | The passage below describes an experiment.
Vincent's young son drew all over the living room wall with crayons! Vincent wanted to find a way to remove the crayon markings. Based on what he read online, he decided to see if scrubbing a wall with baking soda could help remove crayon.
Vincent dipped a sponge in water and... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Vincent investigated whether baking soda can remove crayon from a wall. So, the sections of wall scrubbed with water and baking soda were part of an experimental group.
The sections of wall scrubbed with water only did not get baking soda. So, they were not part of an experimental group. |
train/1067 | Which of the following could Susan's test show? | [
"whether she added enough nutrients to help the bacteria produce 20% more insulin",
"whether producing more insulin would help the bacteria grow faster",
"whether different types of bacteria would need different nutrients to produce insulin"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/1068 | Which continent is highlighted? | [
"Antarctica",
"Asia",
"South America",
"Africa"
] | 3 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | |
train/1069 | Which trait did Coelodonta have? Select the trait you can observe on the fossil. | [
"a black snout",
"horns on its snout"
] | 1 | This picture shows a fossil of an ancient animal called Coelodonta.
Coelodonta was hunted by early humans and went extinct about 10,000 years ago. | closed choice | grade6 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | |
train/1070 | Which trait did this aurochs have? Select the trait you can observe on the fossil. | [
"a striped body",
"a mouth"
] | 1 | This picture shows a fossil of an animal called an aurochs.
The aurochs was hunted by humans and went extinct around 1627. The oldest aurochs fossils are about 2,000,000 years old. | closed choice | grade6 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | |
train/1071 | Which of the following fossils is younger? Select the more likely answer. | [
"palm leaf",
"wood"
] | 0 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is younger:
The palm leaf fossil is in a shallower layer in the rock sequence than the wood fossil. So, the palm leaf fossil is most likely younger than the wood fossil. |
train/1072 | What is the name of the colony shown? | [
"New Jersey",
"Maine",
"Illinois",
"North Carolina"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is North Carolina. | ||
train/1073 | Which trait did Canis dirus have? Select the trait you can observe on the fossil. | [
"dark-brown fur",
"horns",
"pointed teeth"
] | 2 | This picture shows a fossil of an ancient animal called Canis dirus.
Canis dirus went extinct over 10,000 years ago. Fossils of Canis dirus have been found in North and South America. | closed choice | grade6 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | |
train/1074 | Which part of the kale plant do we usually eat? | [
"the leaves",
"the root",
"the flowers"
] | 0 | People use kale plants for food. Photosynthesis makes food for the plant. We usually eat the part of the plant that does most of the photosynthesis. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the kale plant we usually eat is the leaves. They do most of the photosynthesis to make food for the plant. |
train/1075 | What can Roxanne and Wesley trade to each get what they want? | [
"Roxanne can trade her tomatoes for Wesley's broccoli.",
"Wesley can trade his broccoli for Roxanne's oranges.",
"Wesley can trade his almonds for Roxanne's tomatoes.",
"Roxanne can trade her tomatoes for Wesley's carrots."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Roxanne and Wesley open their lunch boxes in the school cafeteria. Neither Roxanne nor Wesley got everything that they wanted. Th... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Roxanne wants broccoli. Wesley wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | |
train/1076 | Which of these states is farthest east? | [
"Indiana",
"California",
"Iowa",
"Louisiana"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Indiana is farthest east. | |
train/1077 | Complete the sentence.
The Owen Fracture Zone formed at a () boundary. | [
"divergent",
"convergent",
"transform"
] | 2 | Read the passage and look at the picture.
The Owen Fracture Zone is a fault that lies at a boundary between the Arabian Plate and the Indo-Australian Plate. Although both plates are moving to the northeast, the Arabian Plate is moving slightly faster than the Indo-Australian Plate. The faster-moving Arabian Plate slide... | closed choice | grade8 | natural science | earth-science | Plate tectonics | Describe tectonic plate boundaries around the world | The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a convergent boundary, two plates are moving toward each other.
At a diverge... | To figure out what type of plate boundary formed the Owen Fracture Zone, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Owen Fracture Zone is a fault that lies at a boundary between the Arabian Plate and the Indo-Australian Plate. Although both plates are moving t... |
train/1078 | Which of these cities is marked on the map? | [
"Chicago",
"New York City",
"San Antonio",
"Atlanta"
] | 0 | closed choice | grade5 | social science | geography | Cities | Major U.S. cities | The city is Chicago, Illinois. Atlanta, New York City, and San Antonio are marked with gray circles on the map below. | ||
train/1079 | Select the organism in the same species as the domestic cat. | [
"Neofelis nebulosa",
"Lynx lynx",
"Felis catus"
] | 2 | This organism is a domestic cat. Its scientific name is Felis catus. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A domestic cat's scientific name is Felis catus.
Lynx lynx does not have the same scientific name as a domestic cat. So, Felis catus and Lynx lynx are not in the same species.
Neofelis nebulosa does not have the same scientific name as a domestic cat. So, Felis catus and Neofelis nebulosa are not in the same species.
F... |
train/1080 | According to the text, what evidence of a volcanic eruption did the captain observe? | [
"He heard a report on the radio warning about a volcanic eruption.",
"He saw pieces of molten rock shooting out of the water.",
"He knew his crew had finished putting their fishing lines in the ocean."
] | 1 | Before sunrise on November 14, 1963, the crew of the fishing boat Isleifur II had just finished putting their lines in the ocean off the southern coast of Iceland. As the crew waited to have breakfast, a strong smell of sulfur drifted over the boat. At first, crew members thought that the cook had burned the eggs or th... | closed choice | grade8 | natural science | literacy-in-science | Ecological interactions | Investigate primary succession on a volcanic island | ||
train/1081 | Which country is highlighted? | [
"Cuba",
"The Bahamas",
"Barbados",
"Dominica"
] | 0 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Cuba.
Does Cuba have any territorial disputes?
Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States controls the area and uses it as a military base and prison. A treaty... | ||
train/1082 | Which material is this window made of? | [
"cotton",
"wood"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the window.
The window is made of two different materials. The window panes are made of glass. The rest of the window is made of wood. | |
train/1083 | What type of rock is quartzite? | [
"sedimentary",
"metamorphic"
] | 1 | Quartzite is a type of rock. It forms when sandstone is changed by heating and squeezing. Quartzite is used to make floors, roofs, and kitchen counters. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Quartzite is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by heating and squeezing.
The center of our planet is very hot. Deep below Earth's surface, rocks can be heated to high temperatures. The rocks can also be squeezed by the weight of rocks around them. Sometimes, the heating a... |
train/1084 | Select the reptile below. | [
"green tree frog",
"tortoise"
] | 1 | Reptiles have scaly, waterproof skin. Most reptiles live on land. An American alligator is an example of a reptile. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A tortoise is a reptile. It has scaly, waterproof skin.
A tortoise's shell protects it from predators. When a tortoise feels threatened, it can pull its head and legs inside its shell.
A green tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs ... |
train/1085 | What is the name of the colony shown? | [
"Rhode Island",
"Georgia",
"New York",
"South Carolina"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Rhode Island. | ||
train/1086 | Which of the following could Lila's test show? | [
"if the new turbine could turn easily",
"whether the new turbine could produce 10% more electricity",
"how much the new turbine would weigh"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/1087 | Select the organism in the same genus as the blue jay. | [
"Strix aluco",
"Cyanocitta stelleri",
"Larus occidentalis"
] | 1 | This organism is a blue jay. Its scientific name is Cyanocitta cristata. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A blue jay's scientific name is Cyanocitta cristata. The first word of its scientific name is Cyanocitta.
Strix aluco is in the genus Strix. The first word of its scientific name is Strix. So, Strix aluco and Cyanocitta cristata are not in the same genus.
Larus occidentalis is in the genus Larus. The first word of its ... |
train/1088 | Which part of the lettuce plant do we usually eat? | [
"the leaves",
"the flowers",
"the root"
] | 0 | People use lettuce plants for food. Photosynthesis makes food for the plant. We usually eat the part of the plant that does most of the photosynthesis. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the lettuce plant we usually eat is the leaves. They do most of the photosynthesis to make food for the plant. |
train/1089 | What is the name of the colony shown? | [
"Pennsylvania",
"Mississippi",
"Maryland",
"New York"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | ||
train/1090 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... |
train/1091 | What is the capital of Kentucky? | [
"Colorado Springs",
"Charleston",
"Frankfort",
"Honolulu"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | ||
train/1092 | Which two months have the lowest average precipitation in Salt Lake City? | [
"September and October",
"November and December",
"July and August"
] | 2 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Salt Lake City, look at the graph.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
July and August each have an average precipitation of less than 1 inch. All... |
train/1093 | What is the capital of South Dakota? | [
"Hilo",
"Pierre",
"Indianapolis",
"Bridgeport"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | ||
train/1094 | During this time, thermal energy was transferred from () to (). | [
"each bottle . . . the surroundings",
"the surroundings . . . each bottle"
] | 1 | Two bottles of soda were sitting on a porch on a hot day. The two bottles were identical, except that one bottle was made of brown glass and one bottle was made of clear glass. This table shows how the temperature of each bottle changed over 25minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each bottle increased, which means that the thermal energy of each bottle increased. So, thermal energy was transferred from the surroundings to each bottle. |
train/1095 | Which term matches the picture? | [
"conduction",
"convection"
] | 1 | Read the text.
Heat transfer can occur in different ways. Two common ways are through conduction and convection. Conduction occurs when molecules from one object collide with molecules from another object. Burning your hand by touching a hot car door on a sunny summer day is an example of conduction.
Convection is anot... | closed choice | grade6 | language science | vocabulary | Context clues | Determine the meaning of domain-specific words with pictures | Convection is the movement of a liquid or gas away from a heat source. When water starts to boil, bubbles of hot gas rise through the water, moving away from the source of heat. | |
train/1096 | What is the capital of Texas? | [
"Houston",
"Austin",
"Charleston",
"Richmond"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | ||
train/1097 | Identify the question that Brody's experiment can best answer. | [
"Does the type of flour used in the muffins affect the number of muffins that turn brown after 30 minutes in the oven?",
"Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Brody made six batches of muffins over the course of one day. He used whole wheat flour in three of the batches and white flour in the other three batches. He divided the batter into muffin tins, using two ounces of bat... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/1098 | Identify the question that Gabby's experiment can best answer. | [
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?",
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Gabby prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Gabby soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the other f... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/1099 | Which of these states is farthest east? | [
"South Dakota",
"Washington",
"California",
"Utah"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. South Dakota is farthest east. |
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