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train/1800 | What is the capital of Hawaii? | [
"Hilo",
"Honolulu",
"Fargo",
"Des Moines"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | ||
train/1801 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"sharpnose-puffer",
"gray tree frog"
] | 0 | Crown-of-thorns sea stars can release venom from the spines on their brightly colored bodies. The bright colors serve as a warning sign that the animal is venomous. The skin of the is adapted to ward off predators.
Figure: crown-of-thorns sea star. | 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 crown-of-thorns sea star.
The crown-of-thorns sea star has venomous spines and brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the crown-of-thorns sea star is venomous.
Now look at each animal. Figure out which animal has a simi... |
train/1802 | Which country is highlighted? | [
"Dominica",
"Haiti",
"Trinidad and Tobago",
"the Dominican Republic"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is the Dominican Republic.
Why does the Dominican Republic share its island with another country?
The Dominican Republic and Haiti share the island of Hispaniola. It is home to the earliest European settlements in the Americas. Christopher Columbus founded the first European settlement on the island in 149... | ||
train/1803 | 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 greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater 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, but some of them are different sizes. | 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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1804 | The United States has a federal system. Based on these definitions, which of these statements would most likely be made by a person who lives under a federal system? | [
"My national government officials decide most issues that come up.",
"I only pay attention to state politics since the national government has almost no power.",
"Both my state and national government officials have power over important issues."
] | 2 | Think about the name of the United States of America. As the name shows, the country has both a united national government and a collection of state governments. In the following questions, you will learn about the relationship between the national government and state governments. You will also learn about how state a... | closed choice | grade6 | social science | civics | Government | State and local government | ||
train/1805 | Identify the question that Sidney's experiment can best answer. | [
"Do more tomato seedlings grow when they are planted in soil with fertilizer compared to soil without fertilizer?",
"Does the humidity level where tomato seeds are planted affect the number of tomato seedlings that grow?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Sidney planted 25 tomato seeds one-half inch below the soil surface in each of six pots. Sidney added an equal amount of fertilizer to three of the six pots. She placed the pots in a plant growth chamber where all the s... | closed choice | grade6 | 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/1806 | Which of the following fossils is younger? Select the more likely answer. | [
"dinosaur footprint",
"wood"
] | 1 | 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 wood fossil is in a shallower layer in the rock sequence than the dinosaur footprint fossil. So, the wood fossil is most likely younger than the dinosaur footprint fossil. |
train/1807 | Which property matches this object? | [
"bumpy",
"soft"
] | 0 | 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 bumpy object is covered in lumps and bumps. The tree bark is bumpy.
A soft object changes shape when you squeeze it. The tree bark is not soft. |
train/1808 | Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the right than to the left",
"to the left than to the right"
] | 1 | The diagram below shows a solution with one solute. Each solute particle is represented by a pink ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time d... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 3 solute particles on the left side of the membrane and 5 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... |
train/1809 | Which bird's beak is also adapted to get nectar out of long flowers? | [
"rufous hummingbird",
"bufflehead"
] | 0 | Purple honeycreepers live in the forests of South America. The shape of the 's beak is adapted to get nectar out of long flowers.
Figure: purple honeycreeper. | 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 a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the purple honeycreeper.
The purple honeycreeper has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The purple honeycreeper's long, thin beak can reach deep into the flowers.
Now look at each bird. Figure out which bird has a similar adaptation.
The rufous hummingbird h... |
train/1810 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: cloud forest.
A cloud forest is a mountain ecosystem that is home to a wide variety of species. The skies were mostly clear last week over this cloud forest, which is in Ecuador.
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.
A cloud forest is a mountain ecosystem that is home to a wide variety of species. The skies were mostly clear last week over this cloud forest, which is in Ecuador.
The underlined part of the passage tells you about the cloud cover in the cloud forest last week. This passage describes the at... |
train/1811 | 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 | 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.
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/1812 | 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 smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | 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, but some of them are different shapes. | 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,... | Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is smaller in Pair 2 than in Pair 1. |
train/1813 | During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each battery",
"each battery . . . the surroundings"
] | 1 | Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5minutes. | 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 battery decreased, which means that the thermal energy of each battery decreased. So, thermal energy was transferred from each battery to the surroundings. |
train/1814 | Which animal is also adapted to be camouflaged in a sandy desert? | [
"fennec fox",
"blue poison dart frog"
] | 0 | Camels live in dry places such as deserts. The is adapted to be camouflaged in a sandy desert.
Figure: camel. | 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 camel.
The camel 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 fennec fox has sand-colored fur covering its skin. It is adapted to... |
train/1815 | 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 smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 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, but some of them are different shapes. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | 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 1 attract. The magnets in Pair 2 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.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... |
train/1816 | Select the fish below. | [
"salmon",
"box turtle"
] | 0 | Fish live underwater. They have fins, not limbs. A manta ray 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 box turtle is a reptile. It has scaly, waterproof skin.
A salmon is a fish. It lives underwater. It has fins, not limbs. |
train/1817 | Is sweat a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 1 | 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... | Sweat is a liquid. A liquid can change shape. But it still takes up the same amount of space.
When you exercise, drops of sweat may drip down your face. | |
train/1818 | Which of the following organisms is the omnivore in this food web? | [
"black rockfish",
"zooplankton",
"kelp bass",
"orca"
] | 2 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
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 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... | Omnivores are consumers that eat both producers and other consumers. So, an omnivore has arrows pointing to it from at least one producer and at least one consumer.
The black rockfish has only one arrow pointing to it. This arrow starts from the zooplankton, which is a consumer. So, the black rockfish is a consumer but... |
train/1819 | Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/1820 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 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 | 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/1821 | Which of these states is farthest west? | [
"New Jersey",
"Maryland",
"Connecticut",
"New Hampshire"
] | 1 | closed choice | grade2 | 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 west arrow is pointing. Maryland is farthest west. | |
train/1822 | Which country is highlighted? | [
"Kiribati",
"the Marshall Islands",
"Tuvalu",
"Nauru"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Kiribati. | ||
train/1823 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 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 | grade6 | 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/1824 | Which three months have over 200millimeters of precipitation in Singapore? | [
"May, June, and July",
"November, December, and January",
"August, September, and October"
] | 1 | 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 Singapore, look at the graph.
Choice "Jan" is incorrect.
Choice "May" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.... |
train/1825 | 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 greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 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, but some of them are different sizes. | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... |
train/1826 | Which country is highlighted? | [
"Tonga",
"Tuvalu",
"Fiji",
"Samoa"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | ||
train/1827 | 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 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 1 | 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 | grade7 | natural science | physics | Velocity, acceleration, and forces | 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,... | Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is smaller in Pair 2 than in Pair 1. |
train/1828 | 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 smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 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, but some of them are different sizes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit... |
train/1829 | What is the name of the colony shown? | [
"Virginia",
"Maryland",
"Connecticut",
"North Carolina"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | ||
train/1830 | Which animal is also adapted to be camouflaged among green leaves? | [
"shield mantis",
"black widow spider"
] | 0 | Leaf insects live in the forests of Asia and Australia. The is adapted to be camouflaged among green leaves.
Figure: leaf insect. | 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 leaf insect.
The leaf insect has a green leaf-shaped body. It is adapted to be camouflaged among green leaves. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The shield mantis has a green leaf-shaped body. It is adapted to be ... |
train/1831 | 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 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 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, but some of them are different sizes. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit... |
train/1832 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Rainbow Falls in Hilo, Hawaii.
Hilo is a city on the island of Hawaii. Hilo is known for its lush landscapes and beautiful waterfalls. Many waterfalls were larger than usual when over five inches of rain fell during the first two weeks of November.
Hint: Weather is what the atmosphere is like at 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.
Hilo is a city on the island of Hawaii. Hilo is known for its lush landscapes and beautiful waterfalls. Many waterfalls were larger than usual when over five inches of rain fell during the first two weeks of November.
The underlined part of the passage tells you about the amount of rain that... |
train/1833 | Select the bird below. | [
"koala",
"painted stork"
] | 1 | Birds have feathers, two wings, and a beak. A robin is an example of a bird. | 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 painted stork is a bird. It has feathers, two wings, and a beak.
Storks wade in shallow water to look for food. Storks eat fish, insects, worms, and other small animals.
A koala is a mammal. It has fur and feeds its young milk.
Koalas sleep for up to 20 hours a day! |
train/1834 | Which animal is also adapted to be camouflaged in the snow? | [
"polar bear",
"hedgehog"
] | 0 | s live in the Canadian Arctic and Greenland. The is adapted to be camouflaged in the snow.
Figure: Arctic hare. | 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 Arctic hare.
During the winter, the Arctic hare has white fur covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The polar bear has white fur covering its body. It is... |
train/1835 | Which ocean is highlighted? | [
"the Indian Ocean",
"the Southern Ocean",
"the Arctic Ocean",
"the Pacific Ocean"
] | 2 | closed choice | grade7 | 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 Arctic Ocean. | |
train/1836 | Which continent is highlighted? | [
"Africa",
"Europe",
"North America"
] | 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 Africa. | |
train/1837 | Which property do these three objects have in common? | [
"flexible",
"bouncy",
"colorful"
] | 0 | Select the best answer. | closed choice | grade3 | 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. | Look at each object.
For each object, decide if it has that property.
A flexible object can be folded or bent without breaking easily. All three objects are flexible.
A colorful object has one or more bright colors. The feather is colorful, but the potato sack and the belt are not.
A bouncy object will bounce back from... |
train/1838 | Which of these states is farthest north? | [
"Florida",
"South Carolina",
"Tennessee",
"Delaware"
] | 3 | 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 north arrow is pointing. Delaware is farthest north. | |
train/1839 | Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/1840 | What is the name of the colony shown? | [
"Ohio",
"North Carolina",
"Massachusetts",
"Connecticut"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Connecticut. | ||
train/1841 | Which part of the peach tree do we usually eat? | [
"the stem",
"the root",
"the fruit"
] | 2 | People use peach trees for food. We usually eat the part of this plant that contains the seeds. It grows from a pollinated flower. | 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 peach tree we usually eat is the fruit. It contains the seeds. |
train/1842 | What is the capital of Maine? | [
"Montpelier",
"Annapolis",
"Augusta",
"Portland"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | ||
train/1843 | Based on the continuum scale, which birds have heavier eggs? | [
"swans",
"geese"
] | 0 | This continuum scale compares the average weights of the eggs of several birds. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | A continuum scale compares things by ordering them along a line. This continuum scale compares the average weights of the eggs of several birds.
Birds with lighter eggs are shown to the left. Birds with heavier eggs are shown to the right. Swan is shown farther to the right than goose, so swans have heavier eggs. |
train/1844 | Which three months have the same average precipitation? | [
"December, January, and February",
"September, October, and November",
"June, July, and August"
] | 1 | 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 Chicago, look at the graph.
Choice "Jan" is incorrect.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
C... |
train/1845 | Which trait did Ichthyornis have? Select the trait you can observe in the drawing. | [
"fur",
"teeth"
] | 1 | This drawing shows the skeleton of an ancient animal called Ichthyornis. This drawing was made by looking at the animal's fossils. | 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/1846 | Which continent is highlighted? | [
"South America",
"Australia",
"Africa",
"Asia"
] | 0 | closed choice | grade8 | social science | geography | Physical Geography | 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 South America. | |
train/1847 | Which is this organism's common name? | [
"Chlamydosaurus kingii",
"frilled lizard"
] | 1 | This organism is a frilled lizard. It is also called Chlamydosaurus kingii. | closed choice | grade8 | 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,... | Chlamydosaurus kingii is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Chlamydosaurus kingii is the organism's scientific name. So, you know that frilled lizard is the common name. |
train/1848 | What is the capital of Maryland? | [
"Augusta",
"Annapolis",
"Baltimore",
"Biloxi"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | ||
train/1849 | Which of these continents does the prime meridian intersect? | [
"Europe",
"North America",
"South America"
] | 0 | closed choice | grade4 | 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 Europe. It does not intersect South America or North America. | |
train/1850 | Which property do these two objects have in common? | [
"bouncy",
"sweet"
] | 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.
Sugar has a sweet taste. Both objects are sweet.
A bouncy object will bounce back from the floor if you drop it. The chocolate bar is not bouncy.
The property that both objects have in common is sweet. |
train/1851 | Which of the following could Pamela's test show? | [
"how much the new turbine would weigh",
"whether the new turbine could produce 10% more electricity",
"if the new turbine could turn easily"
] | 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 | grade7 | 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/1852 | Which of these states is farthest east? | [
"Louisiana",
"Delaware",
"Arizona",
"Florida"
] | 1 | closed choice | grade4 | 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 east arrow is pointing. Delaware is farthest east. | |
train/1853 | 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 greater in Pair 1.",
"The magnitude of the magnetic force is greater 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, but some of them are different sizes. | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... |
train/1854 | Which of these states is farthest east? | [
"Mississippi",
"California",
"Wyoming",
"Washington"
] | 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. Mississippi is farthest east. | |
train/1855 | Which country is highlighted? | [
"Jamaica",
"Haiti",
"the Dominican Republic",
"Dominica"
] | 0 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Jamaica. | ||
train/1856 | Which country is highlighted? | [
"Grenada",
"Barbados",
"Saint Vincent and the Grenadines",
"Saint Lucia"
] | 2 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | ||
train/1857 | Which statement describes the Cerrado ecosystem? | [
"It has a small amount of rain.",
"It has soil that is poor in nutrients."
] | 1 | Figure: Cerrado.
The savanna grasslands of Brazil are called the Cerrado. The Cerrado covers over one-fifth of Brazil and is home to termites, anteaters, armadillos, and other organisms. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A savanna grassland is a type of ecosystem. Savanna grasslands have the following features: warm summers and warm winters, a rainy season and a dry season, and soil that is poor in nutrients. So, the following statements describe the Cerrado ecosystem: warm summers and warm winters, a rainy season and a dry season, and... |
train/1858 | What is the capital of Virginia? | [
"Nampa",
"Richmond",
"Arlington",
"Norfolk"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/1859 | Complete the sentence.
A douglas fir seed can grow into (). | [
"a male cone",
"a new plant",
"pollen"
] | 1 | Douglas fir seeds grow inside of cones. | 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... | A seed can germinate and grow into a new plant.
The new plant can grow male cones and pollen. But a seed does not grow into a male cone or pollen. |
train/1860 | What type of rock is chalk? | [
"sedimentary",
"metamorphic",
"igneous"
] | 0 | This is a piece of chalk. Chalk forms below the ocean floor. It is made of the body parts of tiny marine organisms. The main mineral in chalk is calcite.
Some marine organisms make hard shells. When the organisms die, these shells fall to the ocean floor. Over time, layers of broken shells can get pressed together into... | closed choice | grade7 | 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, or compacted, to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when ... | Chalk is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Many marine organisms make shells. These shells can fall to the ocean floor when the organisms die. The shells are a type of sediment. They usually build up in layers. Over time, the top layers press down on the bottom layers, ... |
train/1861 | What is the capital of New Hampshire? | [
"Concord",
"Augusta",
"Manchester",
"Austin"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Concord is the capital of New Hampshire. | ||
train/1862 | Which property matches this object? | [
"bouncy",
"blue"
] | 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.
Blue is a color.
This color is blue. The basketball is not blue.
A bouncy object will bounce back from the floor if you drop it. The basketball is bouncy. |
train/1863 | Which air temperature was measured within the outlined area shown? | [
"8°C",
"12°C",
"17°C"
] | 0 | The map below shows air temperatures in the lower atmosphere on June 12, 2013. 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 States National Oceanic and Atmospheric Administration/Earth System Research Labo... | closed choice | grade6 | 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 air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
The legend tells you that this air mass contained air with temperatures between 0°C and 10°C.
8°C is within this range.
12°C and 17°C are outside of this range. |
train/1864 | Which solution has a higher concentration of yellow particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... |
train/1865 | Select the organism in the same species as the American kestrel. | [
"Phoebastria nigripes",
"Falco sparverius",
"Ardea goliath"
] | 1 | This organism is an American kestrel. Its scientific name is Falco sparverius. | 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... | An American kestrel's scientific name is Falco sparverius.
Falco sparverius has the same scientific name as an American kestrel. So, these organisms are in the same species.
Ardea goliath does not have the same scientific name as an American kestrel. So, Falco sparverius and Ardea goliath are not in the same species.
P... |
train/1866 | Is Rafflesia arnoldii made up of one cell? | [
"yes",
"no"
] | 1 | This organism is Rafflesia arnoldii. It is a member of the plant kingdom.
Rafflesia arnoldii has the largest flowers in the world. A single flower can be three feet wide! R. arnoldii is commonly called a corpse flower because the flower smells like rotting meat. | yes or no | grade5 | 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... | Rafflesia arnoldii is a plant. Plants are made up of many cells. |
train/1867 | Which animal's skin is also adapted for survival in cold places? | [
"Eurasian lynx",
"fire salamander"
] | 0 | s live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.
Figure: Arctic hare. | closed choice | grade3 | 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 Arctic hare.
During the winter, the Arctic hare has thick fur covering its skin. Its skin is adapted for survival in cold places. The Arctic hare uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
During the winter, the Eurasi... |
train/1868 | Which statement best describes the average monthly precipitation in Boston? | [
"Precipitation does not change much from month to month in Boston.",
"About the same amount of precipitation falls each month between May and October.",
"March is the month with the highest average precipitation."
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | 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. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Boston, look at the graph.
Choice "Mar" is incorrect.
Choice "May" is incorrect.
Choice "Oct" is incorrect.
Choice "Precipitation does not change much from month to month in Boston." is incorrect.
On average, more precipitation falls between November and April than betwee... |
train/1869 | In this experiment, which were part of an experimental group? | [
"the bottles that were cooled down",
"the bottles that were at room temperature"
] | 0 | The passage below describes an experiment.
Jenny has a bubble machine and wants to know how to make the bubbles last longer. She read that bubbles burst when the liquid that makes up the bubbles evaporates. Jenny knew that when liquids are warmer, they evaporate faster. So, she wondered if she could make her bubbles l... | 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, Jenny investigated whether cooling bubble solution affects bubbles. So, the bottles that were cooled down were part of an experimental group.
The bottles that were at room temperature were not cooled down. So, they were not part of an experimental group. |
train/1870 | After the Akkadian Empire ended, many cities and empires tried to control Mesopotamia. Around the 1790s BCE, which empire started controlling Mesopotamia? | [
"the Babylonian Empire",
"the Neo-Sumerian Empire",
"the Akkadian Empire",
"the Elamite Empire"
] | 0 | Look at the table. Then answer the question below. | closed choice | grade6 | social science | world-history | Ancient Mesopotamia | Mesopotamian empires | Look at the table.
The abbreviation "ca." stands for the Latin word, circa. Circa means "about." It indicates when a date is estimated. So, around 1792 BCE, the Babylonian Empire started controlling Mesopotamia.
The Babylonian (ba-bih-LOH-nee-in) Empire came after the Akkadian and Neo-Sumerian empires. The capital of t... | |
train/1871 | Select the organism in the same species as the great egret. | [
"Ardea alba",
"Falco peregrinus",
"Ictinia mississippiensis"
] | 0 | This organism is a great egret. Its scientific name is Ardea alba. | closed choice | grade7 | natural science | biology | Classification and 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 great egret's scientific name is Ardea alba.
Falco peregrinus does not have the same scientific name as a great egret. So, Ardea alba and Falco peregrinus are not in the same species.
Ardea alba has the same scientific name as a great egret. So, these organisms are in the same species.
Ictinia mississippiensis does n... |
train/1872 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. |
train/1873 | Which of the following could Rob's test show? | [
"if the sample fabric would absorb one drop of water in less than one second",
"how much athletes would sweat in the fabric",
"how long it would take the sample fabric to dry after it absorbed one drop of water"
] | 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 | grade7 | 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/1874 | Which months have average temperatures below 50°F? | [
"January through April",
"November through April",
"August through December"
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | To describe the average temperature trends in Denver, look at the graph.
Choice "Apr" is incorrect.
Choice "Aug" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in November, December, January, February, March, and April are all below 50°F. So, Nove... | |
train/1875 | Select the organism in the same species as the green tree frog. | [
"Bufo guttatus",
"Hyla cinerea",
"Bufo bufo"
] | 1 | This organism is a green tree frog. Its scientific name is Hyla cinerea. | closed choice | grade8 | natural science | biology | Classification and 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 green tree frog's scientific name is Hyla cinerea.
Hyla cinerea has the same scientific name as a green tree frog. So, these organisms are in the same species.
Bufo guttatus does not have the same scientific name as a green tree frog. So, Hyla cinerea and Bufo guttatus are not in the same species.
Bufo bufo does not ... |
train/1876 | What is the capital of Virginia? | [
"Oklahoma City",
"Richmond",
"Arlington",
"Portland"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/1877 | Which material is this handsaw made of? | [
"wood",
"wool"
] | 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 handsaw.
The handsaw is made of two different materials. The handle is made of wood. The rest of the saw is made of metal. | |
train/1878 | Complete the sentence.
Pollination is what happens when (). | [
"sperm fuses with an egg",
"pollen lands on a female cone"
] | 1 | 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.
After a female cone is pollinated, its eggs can be fertilized. Fertilization is what happens when male cells from the pollen combine with eggs. |
train/1879 | Is the following statement about our solar system true or false?
Of the four largest planets, three are made mainly of gas. | [
"true",
"false"
] | 1 | Use the data to answer the question below. | true-or false | grade6 | 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 table tells you that the four largest planets are Jupiter, Saturn, Uranus, and Neptune. Jupiter and Saturn are made mainly of gas. Uranus and Neptune are made mainly of ice. So, of the four largest planets, two are made mainly of gas. |
train/1880 | Is Acanthaster planci made up of many cells? | [
"yes",
"no"
] | 0 | This organism is Acanthaster planci. It is a member of the animal kingdom.
Acanthaster planci is commonly called a crown-of-thorns sea star. A crown-of-thorns sea star is covered in poisonous spines! The spines help protect it from predators. | yes or no | grade5 | 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... | Acanthaster planci is an animal. Animals are made up of many cells. |
train/1881 | What is the capital of Texas? | [
"Dallas",
"Austin",
"Hilo",
"Helena"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | ||
train/1882 | Complete the statement.
Hydrogen is (). | [
"an elementary substance",
"a compound"
] | 0 | The model below represents a molecule of hydrogen. ydrogen gas was once used to make large airships, such as blimps, float. It is no longer used in airships because it catches fire easily. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether hydrogen is an elementary substance or a compound.
Step 1: Interpret the model.
In the ball-and-stick model shown above, both of the balls are the same color:
. The legend shows that light gray represents the chemical element with the atomic symbol H. So, the model shows you that a mo... |
train/1883 | Which rhetorical appeal is primarily used in this ad? | [
"pathos (emotion)",
"ethos (character)",
"logos (reason)"
] | 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 pathos, or emotion, by evoking pity and compassion. | |
train/1884 | Which country is highlighted? | [
"the Federated States of Micronesia",
"the Marshall Islands",
"Tonga",
"Kiribati"
] | 1 | 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/1885 | What is the capital of Missouri? | [
"Bismarck",
"Lincoln",
"Kansas City",
"Jefferson City"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | ||
train/1886 | 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/1887 | Identify the question that Elena'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.
Elena prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Elena soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the other f... | closed choice | grade6 | 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/1888 | Which of the following could Max's test show? | [
"the amount of sunlight the roof would get throughout the year",
"which side of the roof got more sun over one day",
"how many solar panels could fit on each side of the roof"
] | 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 | grade7 | 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/1889 | Which country is highlighted? | [
"Kiribati",
"the Marshall Islands",
"Vanuatu",
"Nauru"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Nauru. | ||
train/1890 | Is gypsum a mineral or a rock? | [
"rock",
"mineral"
] | 1 | Gypsum has the following properties:
found in nature
fixed crystal structure
solid
not made by living things
non-metallic luster
pure substance | closed choice | grade7 | 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... | Gypsum has all the properties of a mineral. So, gypsum is a mineral. |
train/1891 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 1 | Figure: Budapest.
The Danube River flows through the city of Budapest. The winds there normally blow from the northwest.
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 | grade4 | 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.
The Danube River flows through the city of Budapest. The winds there normally blow from the northwest.
The underlined part of the passage tells you about the usual wind patterns in Budapest. This passage does not describe what the weather is like on a particular day. So, this passage describ... |
train/1892 | Which property do these three objects have in common? | [
"blue",
"smooth",
"flexible"
] | 1 | 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 flexible object can be folded or bent without breaking easily. The silk tie is flexible, but the glass bottle is not.
A smooth object is not scratchy or rough. All three objects are smooth.
Blue is a color.
This color is blue. The silk tie is blue,... |
train/1893 | Is a crayon a solid, a liquid, or a gas? | [
"a liquid",
"a gas",
"a solid"
] | 2 | 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 crayon is a solid. You can break a crayon into pieces. But each piece will still have a size and shape of its own. | |
train/1894 | Which of the following could Jerry's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 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 | grade6 | 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/1895 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Madagascar.
Madagascar is a country in Africa. The temperature is usually warm throughout the year.
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 | grade4 | 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.
Madagascar is a country in Africa. The temperature is usually warm throughout the year.
The underlined part of the passage tells you about the usual temperature pattern in Madagascar. This passage does not describe what the weather is like on a particular day. So, this passage describes the ... |
train/1896 | Which statement describes the Peary Land ecosystem? | [
"It has dry, thin soil that is rich in nutrients.",
"It has many evergreen trees.",
"It has long, cold winters and short, cold summers."
] | 2 | Figure: Peary Land.
Peary Land is a tundra ecosystem in northern Greenland. It is part of Northeast Greenland National Park. That park is one of the largest national parks in the world, covering about 375,000 square miles. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A tundra is a type of ecosystem. Tundras have the following features: long, cold winters and short, cold summers, soil that is frozen year-round, and mostly small plants. So, the following statement describes the Peary Land ecosystem: long, cold winters and short, cold summers, soil that is frozen year-round, and mostl... |
train/1897 | Which ocean is highlighted? | [
"the Arctic Ocean",
"the Atlantic Ocean",
"the Pacific Ocean",
"the Indian 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/1898 | Which continent is highlighted? | [
"Australia",
"Asia",
"Antarctica",
"North America"
] | 2 | closed choice | grade8 | social science | geography | Physical Geography | 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 Antarctica. | |
train/1899 | Select the organism in the same genus as the Canada lynx. | [
"Felis catus",
"Lontra canadensis",
"Lynx rufus"
] | 2 | This organism is a Canada lynx. Its scientific name is Lynx canadensis. | closed choice | grade6 | natural science | biology | Classification and 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 Canada lynx's scientific name is Lynx canadensis. The first word of its scientific name is Lynx.
Lynx rufus is in the genus Lynx. The first word of its scientific name is Lynx. So, Lynx rufus and Lynx canadensis are in the same genus.
Lontra canadensis and Lynx canadensis are not in the same genus.
These organisms ar... |
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