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train/1400 | What is the capital of South Carolina? | [
"Indianapolis",
"Jackson",
"Charleston",
"Columbia"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Columbia is the capital of South Carolina. | ||
train/1401 | Which is the main persuasive appeal used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 0 | closed choice | grade7 | 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 that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to logos, or reason. It uses a graph to display factual information. | |
train/1402 | 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 2.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger 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. | 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 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. |
train/1403 | Is sphalerite a mineral or a rock? | [
"mineral",
"rock"
] | 0 | Sphalerite has the following properties:
fixed crystal structure
pure substance
translucent
found in nature
not made by organisms
solid | 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... | Sphalerite has all the properties of a mineral. So, sphalerite is a mineral. |
train/1404 | Identify the question that Zack's experiment can best answer. | [
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?",
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Zack set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Zack watched cardinals visiting the feeders dur... | 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/1405 | Which country is highlighted? | [
"Dominica",
"the Dominican Republic",
"Saint Vincent and the Grenadines",
"Saint Kitts and Nevis"
] | 1 | closed choice | grade8 | 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/1406 | What is the capital of Maine? | [
"Charleston",
"Portland",
"Hartford",
"Augusta"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | ||
train/1407 | 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 the same in both pairs.",
"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/1408 | 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."
] | 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 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,... | 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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1409 | What is this spider's scientific name? | [
"Pritha insularis",
"Pritha garfieldi"
] | 1 | In 2015, this species of spider was discovered in the Alborz Mountains in Iran. It was named after the actor Andrew Garfield, who starred in the movie The Amazing Spider-Man. | closed choice | grade4 | natural science | biology | Scientific names | Origins of scientific names | When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the w... | This organism's scientific name refers to Andrew Garfield.
The word garfieldi refers to Andrew Garfield. So, this spider's scientific name is Pritha garfieldi. |
train/1410 | Which of the following could Brandon's test show? | [
"how much athletes would sweat in the fabric",
"if the sample fabric would absorb one drop of water in less than one second",
"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 | 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/1411 | Select the organism in the same species as the yellow-footed gull. | [
"Goura cristata",
"Caprimulgus macrurus",
"Larus livens"
] | 2 | This organism is a yellow-footed gull. Its scientific name is Larus livens. | 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 yellow-footed gull's scientific name is Larus livens.
Larus livens has the same scientific name as a yellow-footed gull. So, these organisms are in the same species.
Goura cristata does not have the same scientific name as a yellow-footed gull. So, Larus livens and Goura cristata are not in the same species.
Caprimul... |
train/1412 | What is the capital of California? | [
"Helena",
"Austin",
"Sacramento",
"Los Angeles"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Sacramento is the capital of California. | ||
train/1413 | Is the following statement about our solar system true or false?
The four largest planets are made mainly of gas or ice. | [
"true",
"false"
] | 0 | 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 largest, look at the volumes and compare the exponents. The volumes of Jupiter, Saturn, Uranus, and Neptune have the largest exponents. So, these four planets are the largest.
Jupiter and Saturn are made mainly of gas. Uranus and Neptune are made mainly of ice. So, the four largest ... |
train/1414 | Which air temperature was measured within the outlined area shown? | [
"23°C",
"12°C",
"-23°C"
] | 2 | The map below shows air temperatures in the lower atmosphere on April 15, 2017. The outlined area shows an air mass that influenced weather in North 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 Lab... | 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.
10°C.
-23°C is within this range.
12°C and 23°C are outside of this range. |
train/1415 | Which of the following statements is true? | [
"Soap is a reactant in the saponification reaction.",
"Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.",
"A chemical change occurs during saponification."
] | 2 | A substance's chemical structure depends on the number and types of atoms in each of its molecules, as well as on how those atoms are arranged. Substances with different chemical structures have different physical and chemical properties.
When a substance is a reactant in a chemical reaction, its chemical structure cha... | closed choice | grade7 | natural science | chemistry | Chemical reactions | Explore chemical structure and properties: soapmaking | Soap is a reactant in the saponification reaction.
Soap is produced during saponification. So, soap is a product, not a reactant, in this reaction.
Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.
The products of a chemical reaction are made up of the same number and ty... | |
train/1416 | Which country is highlighted? | [
"Solomon Islands",
"Papua New Guinea",
"New Zealand",
"Australia"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead. | ||
train/1417 | Which of these states is farthest south? | [
"Arizona",
"Massachusetts",
"Minnesota",
"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 south arrow is pointing. Arizona is farthest south. | |
train/1418 | What is the capital of Virginia? | [
"Dover",
"Richmond",
"Jefferson City",
"Jersey City"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/1419 | 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 2.",
"The magnitude of the magnetic force is greater 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. | 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,... | 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 smaller distance between magnets, the magni... |
train/1420 | Which property do these three objects have in common? | [
"scratchy",
"rough",
"sweet"
] | 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 scratchy object is rough and itchy against your skin. None of the objects are scratchy.
A rough object feels scratchy when you touch it. The chocolate milkshake and the honey are not rough.
Sugar has a sweet taste. All three objects are sweet.
The ... |
train/1421 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 1 | Figure: Eastern Colorado.
Eastern Colorado is in the Great Plains. This part of the United States often experiences windy conditions year-round. Windmills, like the one in this picture, use energy from the wind to pump water.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the patte... | 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.
Eastern Colorado is in the Great Plains. This part of the United States often experiences windy conditions year-round. Windmills, like the one in this picture, use energy from the wind to pump water.
The underlined part of the passage tells you about the usual wind patterns in Eastern Colora... |
train/1422 | 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 2.",
"The magnitude of the magnetic force is greater 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. | 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 smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is greater in Pair 1 than in Pair 2. |
train/1423 | Which solution has a higher concentration of purple particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 0 | 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/1424 | Select the statement that is true about Sydney's average monthly precipitation. | [
"March is the driest month of the year.",
"Each month has about the same amount of precipitation.",
"More precipitation falls in June than in December."
] | 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 Sydney, look at the graph.
Choice "Mar" is incorrect.
Choice "Jun" is incorrect.
Choice "Dec" is incorrect.
Choice "March is the driest month of the year." is incorrect.
The driest month is the one with the lowest average monthly precipitation. September, not March, has t... |
train/1425 | Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade8 | 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 pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... |
train/1426 | Which animal's feet are also adapted for digging? | [
"eastern mole",
"slender-legged tree frog"
] | 0 | Star-nosed moles are found in many parts of North America. They live in burrows. The moles eat earthworms and nuts, which they find in the soil. The feet of the are adapted for digging.
Figure: star-nosed mole. | 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.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the star-nosed mole.
The star-nosed mole has long, straight claws. Its feet are adapted for digging. The star-nosed mole uses its claws to break up soil and move it out of the way.
Now look at each animal. Figure out which animal has a similar adaptation.
The eastern mole has long, straight claws... |
train/1427 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 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 north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/1428 | Is the following statement about our solar system true or false?
The largest planet is made mainly of ice. | [
"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 Jupiter is the largest planet and that Jupiter is made mainly of gas. So, the largest planet is made mainly of gas. |
train/1429 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | closed choice | grade4 | 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: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, 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. Opposite poles attract. So, these magnets will attract each other. |
train/1430 | Which of these states is farthest west? | [
"Maine",
"West Virginia",
"Alabama",
"Vermont"
] | 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 west arrow is pointing. Alabama is farthest west. | |
train/1431 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: Umbria.
Large, fluffy clouds filled the sky on a warm summer day in Umbria, Italy.
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.
Large, fluffy clouds filled the sky on a warm summer day in Umbria, Italy.
This passage tells you about the cloud cover over Umbria on a specific day. This passage describes the atmosphere at a certain place and time. So, this passage describes the weather. |
train/1432 | What type of rock is soapstone? | [
"sedimentary",
"igneous",
"metamorphic"
] | 2 | Soapstone is made mostly of the mineral talc. The rock can also have small amounts of other minerals such as chlorite.
Soapstone can form when a rock is changed by high temperature and pressure. When rocks such as dunite and dolostone are buried deep inside the earth, they can turn into soapstone. | 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 ... | Soapstone is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by high temperature and pressure.
Heat and pressure can change the type and arrangement of minerals in a rock. This change forms a new rock with different properties. Soapstone can form when sedimentary and igneous rocks are ... |
train/1433 | Which of the following could Meg and Tammy's test show? | [
"if the concrete from each batch took the same amount of time to dry",
"if a new batch of concrete was firm enough to use"
] | 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 | 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/1434 | Is the following statement about our solar system true or false?
Jupiter's volume is more than 1,000 times as great as Earth's volume. | [
"false",
"true"
] | 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. | To determine if this statement is true, calculate the value of 1,000 times the volume of Earth.
Then compare the result to the volume of Jupiter. Jupiter's volume is 1,431,280 billion km^3, which is more than 1,090,000 billion km^3. So, Jupiter's volume is more than 1,000 times as great as Earth's volume. |
train/1435 | 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, but some of them are different sizes and shapes. | 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,... | 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/1436 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | 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 north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/1437 | What is the capital of Maine? | [
"Burlington",
"Atlanta",
"Augusta",
"Portland"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | ||
train/1438 | What is the name of the colony shown? | [
"Connecticut",
"Vermont",
"Illinois",
"New Hampshire"
] | 3 | closed choice | grade7 | social science | us-history | Colonial 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/1439 | Which of these cities is marked on the map? | [
"Houston",
"Boston",
"Washington, D.C.",
"Detroit"
] | 1 | closed choice | grade5 | social science | geography | Cities | Major U.S. cities | The city is Boston, Massachusetts. Washington, D.C., Detroit, and Houston are marked with gray circles on the map below. | ||
train/1440 | What is the capital of Tennessee? | [
"Baton Rouge",
"Nashville",
"Columbia",
"Richmond"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Nashville is the capital of Tennessee. | ||
train/1441 | Which country is highlighted? | [
"Barbados",
"Saint Lucia",
"Saint Kitts and Nevis",
"Saint Vincent and the Grenadines"
] | 0 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Barbados. | ||
train/1442 | Which animal's mouth is also adapted to get insects out of burrows? | [
"Steller sea lion",
"aardvark"
] | 1 | Giant anteaters eat insects such as ants and termites. These insects often live in holes called burrows. The anteater's mouth is adapted to get insects out of burrows.
Figure: giant anteater. | 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 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 giant anteater.
A tube-shaped snout helps the giant anteater reach into a burrow. A long, sticky tongue helps it catch the insects.
Now look at each animal. Figure out which animal has a similar adaptation.
The aardvark has a tube-shaped mouth and a long, sticky tongue. Its mouth is adapted t... |
train/1443 | What is the capital of Alaska? | [
"Honolulu",
"Juneau",
"Santa Fe",
"Fairbanks"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | ||
train/1444 | What is the capital of Washington? | [
"Helena",
"Olympia",
"Spokane",
"Saint Paul"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Olympia is the capital of Washington. | ||
train/1445 | 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"
] | 2 | 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... | Each particle in sample B has more mass than each particle in sample A. The particles in sample B also have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average ... |
train/1446 | Look at the picture. Which word best describes how this toast smells? | [
"burnt",
"lemony",
"fruity"
] | 0 | closed choice | grade2 | language science | writing-strategies | Descriptive details | Choose the sensory details that match the picture | When you write, you can use sensory details. These sense words help your reader understand what something looks, sounds, tastes, smells, or feels like.
Sensory Category | Description
Sight | These are words like bright, clean, and purple. A reader can imagine looking at these details.
Sound | These are words like hissi... | Look at the picture.
The word burnt describes how this toast smells. You can tell by looking at the toast's dark color.
Fruity and lemony can also describe how something smells. But they do not describe this toast. | |
train/1447 | Which country is highlighted? | [
"Saint Kitts and Nevis",
"Trinidad and Tobago",
"Saint Vincent and the Grenadines",
"Grenada"
] | 3 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Grenada. | ||
train/1448 | Which country is highlighted? | [
"Samoa",
"Kiribati",
"the Marshall Islands",
"Nauru"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Kiribati. | ||
train/1449 | Select the organism in the same species as the red-billed gull. | [
"Cyanocitta stelleri",
"Polysticta stelleri",
"Chroicocephalus scopulinus"
] | 2 | This organism is a red-billed gull. Its scientific name is Chroicocephalus scopulinus. | closed choice | grade5 | 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 red-billed gull's scientific name is Chroicocephalus scopulinus.
Polysticta stelleri does not have the same scientific name as a red-billed gull. So, Chroicocephalus scopulinus and Polysticta stelleri are not in the same species.
Cyanocitta stelleri does not have the same scientific name as a red-billed gull. So, Chr... |
train/1450 | Which of the following could Judith's test show? | [
"how much the drone weighed with the blade guards",
"if adding the blade guards made the drone fly poorly",
"if the blade guards would break in a crash"
] | 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/1451 | Which continent is highlighted? | [
"Australia",
"Antarctica",
"Africa"
] | 1 | 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 Antarctica. | |
train/1452 | What is the capital of Arizona? | [
"Tucson",
"Salt Lake City",
"Phoenix",
"Carson City"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Phoenix is the capital of Arizona. | ||
train/1453 | What is the probability that a guppy produced by this cross will be heterozygous for the body color gene? | [
"0/4",
"4/4",
"2/4",
"1/4",
"3/4"
] | 2 | In a group of guppies, some individuals have a gray body and others have a golden body. In this group, the gene for the body color trait has two alleles. The allele for a gray body (B) is dominant over the allele for a golden body (b).
This Punnett square shows a cross between two guppies. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | |
train/1454 | What is the expected ratio of offspring with a black coat to offspring with a spotted coat? Choose the most likely ratio. | [
"4:0",
"0:4",
"2:2",
"1:3",
"3:1"
] | 0 | In a group of jaguars, some individuals have a black coat and others have a spotted coat. In this group, the gene for the coat pattern trait has two alleles. The allele for a spotted coat (a) is recessive to the allele for a black coat (A).
This Punnett square shows a cross between two jaguars. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with a black coat or a spotted coat, consider whether each phenotype is the dominant or recessive allele's version of the coat pattern trait. The question tells you that the a allele, which is for a spotted coat, is recessive to the A allele, which i... |
train/1455 | Which of these organisms contains matter that was once part of the persimmon tree? | [
"silver maple",
"black racer"
] | 1 | 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 three paths matter can take from the persimmon tree to the bobcat: persimmon tree->pine vole->gray fox->bobcat. persimmon tree->swallowtail caterpillar->gra... |
train/1456 | Is the following statement about our solar system true or false?
The largest planet is made mainly of ice. | [
"false",
"true"
] | 0 | 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 planet is the largest, look at the volumes shown in the table and compare the exponents. Jupiter's volume has an exponent of 15, which is the largest out of all the planets.
Jupiter is made mainly of gas. So, the largest planet is made mainly of gas. |
train/1457 | What is the capital of Kansas? | [
"Kansas City",
"Topeka",
"Lansing",
"Saint Paul"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Topeka is the capital of Kansas. | ||
train/1458 | 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."
] | 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.
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 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. |
train/1459 | What is the capital of North Dakota? | [
"Boston",
"Bismarck",
"Fargo",
"Huntington"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Bismarck is the capital of North Dakota. | ||
train/1460 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"neither; the samples have the same temperature",
"sample A"
] | 0 | 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... | Each particle in the two samples has the same mass, but the particles in sample B have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sampl... |
train/1461 | Which country is highlighted? | [
"Tuvalu",
"Kiribati",
"Samoa",
"Tonga"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/1462 | Which of these states is farthest south? | [
"Idaho",
"Vermont",
"Nebraska",
"Michigan"
] | 2 | 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 south arrow is pointing. Nebraska is farthest south. | |
train/1463 | 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 the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 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 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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1464 | Select the chemical formula for this molecule. | [
"I2Cl2",
"ICl",
"I2Cl",
"ICl2"
] | 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 ... | I is the symbol for iodine. According to the legend, iodine atoms are shown in dark purple. Cl is the symbol for chlorine. According to the legend, chlorine atoms are shown in green. This ball-and-stick model shows a molecule with one iodine atom and one chlorine atom. The chemical formula will contain the symbols I an... | |
train/1465 | Which property matches this object? | [
"fuzzy",
"slippery"
] | 1 | 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 slippery object is hard to hold onto or stand on. The jello is slippery.
A fuzzy object is covered in soft hair. The jello is not fuzzy. |
train/1466 | Which of the following could Laura and Isabella's test show? | [
"if the concrete from each batch took the same amount of time to dry",
"if a new batch of concrete was firm enough to use"
] | 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 | 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/1467 | What is this trapdoor spider's scientific name? | [
"Aptostichus chavezi",
"Aptostichus asmodaeus"
] | 0 | This species of trapdoor spider was discovered in California in 2012. This trapdoor spider's scientific name was chosen in honor of Cesar Chavez. Cesar Chavez was a labor and civil rights leader who lived in California. | closed choice | grade4 | natural science | biology | Scientific names | Origins of scientific names | When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the w... | This organism's scientific name refers to Cesar Chavez.
The word chavezi refers to Cesar Chavez. So, this trapdoor spider's scientific name is Aptostichus chavezi. |
train/1468 | Which animal is also adapted for flight? | [
"manatee",
"flamingo"
] | 1 | Great blue herons fly long distances each year to find food. They have wings instead of arms. Herons are adapted for flight.
Figure: great blue heron. | closed choice | grade3 | 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 great blue heron.
The great blue heron has large, powerful wings. It is adapted for flight. Long, powerful wings help the great blue heron travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The flamingo has large, powerful wings. It is ada... |
train/1469 | Which country is highlighted? | [
"the Federated States of Micronesia",
"Fiji",
"Tonga",
"Tuvalu"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/1470 | Which state is highlighted? | [
"Virginia",
"Kentucky",
"Georgia",
"West Virginia"
] | 2 | closed choice | grade5 | social science | geography | States | Identify states of the Southeast | This state is Georgia. | ||
train/1471 | What is the capital of Vermont? | [
"Montpelier",
"Denver",
"Annapolis",
"Burlington"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Montpelier is the capital of Vermont. | ||
train/1472 | Which property do these two objects have in common? | [
"breakable",
"soft"
] | 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 soft object changes shape when you squeeze it. Both objects are soft.
The property that both objects have in common is soft. |
train/1473 | Identify the question that Martha's experiment can best answer. | [
"Do slugs weigh more after eating tomato leaves or broccoli leaves?",
"Do slugs eat more from tomato leaves or broccoli leaves?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Martha cut tomato and broccoli plant leaves into one-inch squares. In each of 12 containers, she placed six leaf squares: three tomato-leaf squares and three broccoli-leaf squares. She put one slug from her garden into ... | 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/1474 | Which of the following could Lee's test show? | [
"which side of the roof got more sun over one day",
"how many solar panels could fit on each side of the roof",
"the amount of sunlight the roof would get throughout the year"
] | 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/1475 | Look at the models of molecules below. Select the elementary substance. | [
"methanol",
"silane",
"ozone"
] | 2 | closed choice | grade6 | natural science | chemistry | Atoms and molecules | Identify 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 ... | ||
train/1476 | Which area on the map shows Japan? | [
"A",
"D",
"B",
"C"
] | 1 | Japan is an archipelago [ar-keh-PEL-ah-go], or group of islands, in East Asia. There are four main islands that make up the Japanese archipelago. These islands are east of China, which is the largest country in East Asia today. Look at the map. Then answer the question below. | closed choice | grade6 | social science | world-history | Medieval Asia | Medieval Japan | Look back at the map. Find the compass rose, which shows the four main directions. The information in the question gives clues to determining where Japan is located on the map:
Japan is made up of four main islands.
Japan is east of China, which is the largest country in East Asia.
Based on this information, the highli... | |
train/1477 | 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."
] | 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 sizes and 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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1478 | Select the organism in the same species as the Burmese python. | [
"Python bivittatus",
"Melanoplus bivittatus",
"Falco peregrinus"
] | 0 | This organism is a Burmese python. Its scientific name is Python bivittatus. | 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 Burmese python's scientific name is Python bivittatus.
Melanoplus bivittatus does have the same species within its genus as a Burmese python, but they are not in the same genus! They do not have the same scientific name as each other. So, these organisms are not in the same species.
Python bivittatus has the same sci... |
train/1479 | Which of these organisms contains matter that was once part of the persimmon tree? | [
"swallowtail caterpillar",
"beaver"
] | 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 two paths matter can take from the persimmon tree to the pine vole: persimmon tree->pine vole. persimmon tree->swallowtail caterpillar->pine vole. There are... |
train/1480 | Which of these states is farthest south? | [
"Wyoming",
"Illinois",
"Mississippi",
"Nevada"
] | 2 | 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 south arrow is pointing. Mississippi is farthest south. | |
train/1481 | Which i in column 3? | [
"the grocery store",
"the pond",
"the police department",
"the fire department"
] | 2 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The police department is in column 3. | |
train/1482 | Which animal is also adapted to be camouflaged in a sandy desert? | [
"camel",
"collared tree runner"
] | 0 | Horned vipers live in the deserts of Africa and the Middle East. The is adapted to be camouflaged in a sandy desert.
Figure: horned viper. | 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 horned viper.
The horned viper has sand-colored scales covering its body. 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 camel has sand-colored fur covering its skin. It i... |
train/1483 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"sample B",
"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 | 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... | Each particle in the two samples has the same mass, but the particles in sample B have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sampl... |
train/1484 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | 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/1485 | What is the capital of Arkansas? | [
"Little Rock",
"Jefferson City",
"Fayetteville",
"Dover"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. | ||
train/1486 | Select the chemical formula for this molecule. | [
"P3C",
"HPCl3",
"PCl2",
"PCl3"
] | 3 | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Match chemical formulas to 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 ... | P is the symbol for phosphorus. Cl is the symbol for chlorine. This ball-and-stick model shows a molecule with one phosphorus atom and three chlorine atoms.
The chemical formula will contain the symbols P and Cl. There is one phosphorus atom, so P will not have a subscript. There are three chlorine atoms, so Cl will ha... | |
train/1487 | What is the name of the colony shown? | [
"New Hampshire",
"New York",
"South Carolina",
"New Jersey"
] | 2 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is South Carolina. | ||
train/1488 | Which of the following could Cara's test show? | [
"whether producing more insulin would help the bacteria grow faster",
"whether she added enough nutrients to help the bacteria produce 20% more insulin",
"whether different types of bacteria would need different nutrients to produce insulin"
] | 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/1489 | 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."
] | 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 and shapes. | 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,... | 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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... |
train/1490 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | 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/1491 | Complete the sentence.
Silfra formed at a () boundary. | [
"divergent",
"transform",
"convergent"
] | 0 | Read the passage and look at the picture.
Silfra is a rift valley that runs along part of the Mid-Atlantic Ridge in Iceland. This picture of Silfra shows an area where large cracks formed as the North American Plate and the Eurasian Plate moved away from each other. In this area, the rift cuts through an underwater spr... | 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 transform boundary, two plates are sliding past each other.
At a convergen... | To figure out what type of plate boundary formed Silfra, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
Silfra is a rift valley that runs along part of the Mid-Atlantic Ridge in Iceland. This picture of Silfra shows an area where large cracks formed as the North Ameri... |
train/1492 | What is the capital of Rhode Island? | [
"Annapolis",
"Newport",
"Providence",
"Dover"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/1493 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | 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 north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. |
train/1494 | Which better describes the Catoctin Mountain Park ecosystem? | [
"It has soil that is poor in nutrients. It also has only a few types of trees.",
"It has soil that is rich in nutrients. It also has only a few types of trees."
] | 1 | Figure: Catoctin Mountain Park.
Catoctin Mountain Park is a temperate deciduous forest ecosystem in Maryland. | closed choice | grade4 | 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 temperate deciduous forest is a type of ecosystem. Temperate deciduous forests have the following features: warm, wet summers and cold, wet winters, soil that is rich in nutrients, and only a few types of trees. So, Catoctin Mountain Park has soil that is rich in nutrients. It also has only a few types of trees. |
train/1495 | Which solution has a higher concentration of yellow particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 0 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade8 | 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/1496 | Which country is highlighted? | [
"the Marshall Islands",
"Kiribati",
"Nauru",
"Tuvalu"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Kiribati. | ||
train/1497 | What is the capital of Wyoming? | [
"Carson City",
"Santa Fe",
"Cheyenne",
"Hilo"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Cheyenne is the capital of Wyoming. | ||
train/1498 | What is the capital of Mississippi? | [
"Raleigh",
"Jackson",
"Frankfort",
"Lansing"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Jackson is the capital of Mississippi. | ||
train/1499 | Which statement describes the Eastern Siberian Taiga ecosystem? | [
"It has soil that is rich in nutrients.",
"It has many evergreen trees.",
"It has soil that is frozen year-round."
] | 1 | Figure: East Siberian Taiga.
The Eastern Siberian Taiga is a large forest that covers more than a quarter of Russia. It is home to brown bears, wolves, deer, and other organisms. | closed choice | grade8 | 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 taiga is a type of ecosystem. Taigas have the following features: long, cold winters and short, cool summers, many evergreen trees, and soil that is poor in nutrients. So, the following statement describes the Eastern Siberian Taiga ecosystem: long, cold winters and short, cool summers, many evergreen trees, and soil... |
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