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train/5100 | Complete the sentence.
A crocodile has () on the outside of its mouth. | [
"pointed teeth",
"soft skin",
"sharp claws"
] | 0 | Read the first part of the passage about crocodiles.
Crocodiles are big animals. They live in water and on land.
A crocodile has bumpy skin. It has a long nose and a huge mouth. It has pointed teeth that grow on the outside of its mouth. | closed choice | grade1 | language science | reading-comprehension | Read-alone texts | Read passages about animals | The passage says a crocodile has pointed teeth that grow on the outside of its mouth. | |
train/5101 | Which ocean is highlighted? | [
"the Indian Ocean",
"the Arctic Ocean",
"the Atlantic Ocean",
"the Southern 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 Arctic Ocean. | |
train/5102 | Which of the following could Owen's test show? | [
"whether a parachute with a 1 m vent would swing too much at 400 km per hour",
"if the spacecraft was damaged when using a parachute with a 1 m vent going 200 km per hour",
"how steady a parachute with a 1 m vent was at 200 km per hour"
] | 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/5103 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 1.",
"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/5104 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Chesapeake Bay.
Unionville is a small town near Chesapeake Bay in Maryland. On July 4, 1956, over one inch of rain fell there in just one minute!
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.
Unionville is a small town near Chesapeake Bay in Maryland. On July 4, 1956, over one inch of rain fell there in just one minute!
The underlined part of the passage tells you about the amount of rain that fell on Unionville on a specific day in 1956. This passage describes the atmosphere at ... |
train/5105 | What is the capital of Delaware? | [
"Annapolis",
"Dover",
"Wilmington",
"Harrisburg"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | ||
train/5106 | Which property do these four objects have in common? | [
"salty",
"translucent",
"fuzzy"
] | 2 | Select the best answer. | closed choice | grade5 | 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.
Potato chips have a salty taste. The kiwi is not salty.
A translucent object lets light through. But you cannot see clearly through a translucent object. The slippers and the tennis ball are not translucent.
A fuzzy object is covered in soft hair. Al... |
train/5107 | Which property matches this object? | [
"bendable",
"smooth"
] | 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 smooth object is not scratchy or rough. The potato sack is not smooth.
A bendable object can be bent without breaking. The potato sack is bendable. |
train/5108 | Which continent is highlighted? | [
"Asia",
"Africa",
"Europe",
"North America"
] | 3 | closed choice | grade3 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is North America. | |
train/5109 | What is the capital of Indiana? | [
"Fargo",
"Fort Wayne",
"Indianapolis",
"Bismarck"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | ||
train/5110 | What is the capital of Nevada? | [
"Buffalo",
"Carson City",
"Las Vegas",
"Reno"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | ||
train/5111 | In this experiment, which were part of a control group? | [
"the bottles with lids taken off",
"the bottles with lids kept on"
] | 1 | The passage below describes an experiment.
Bob wanted to freeze soda to make popsicles. He knew that soda contains carbon dioxide gas, which forms bubbles as it escapes from the liquid. He wondered if the popsicles would freeze more quickly if he removed the carbon dioxide.
Bob took the lids off three small bottles of... | 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, Bob investigated whether removing carbon dioxide from soda affects how quickly the soda freezes. Carbon dioxide was not removed from the bottles with lids kept on. So, they were part of a control group. |
train/5112 | 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 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"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 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,... | 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/5113 | What is the capital of Iowa? | [
"Salt Lake City",
"Cedar Rapids",
"Davenport",
"Des Moines"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | ||
train/5114 | What is this butterfly's scientific name? | [
"Parides gundlachianus",
"Parides montezuma"
] | 1 | This species of butterfly lives in forests throughout the Americas. It was named after Montezuma II, the ruler of the Aztec empire from 1502 to 1520. | 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 Montezuma II.
The word montezuma refers to Montezuma II. So, this butterfly's scientific name is Parides montezuma. |
train/5115 | Is the following statement about our solar system true or false?
The volume of Mars is more than three times as large as Mercury's. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade7 | 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 three times the volume of Mercury.
Then compare the result to the volume of Mars. The volume of Mars is 160 billion km^3, which is less than 180 billion km^3. So, the volume of Mars is less than three times as large as Mercury's. |
train/5116 | Select the organism in the same genus as the plains zebra. | [
"Cervus canadensis",
"Equus grevyi",
"Macropus giganteus"
] | 1 | This organism is a plains zebra. Its scientific name is Equus quagga. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A plains zebra's scientific name is Equus quagga. The first word of its scientific name is Equus.
Macropus giganteus is in the genus Macropus. The first word of its scientific name is Macropus. So, Macropus giganteus and Equus quagga are not in the same genus.
Equus grevyi is in the genus Equus. The first word of its s... |
train/5117 | Identify the question that Tina'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.
Tina planted 25 tomato seeds one-half inch below the soil surface in each of six pots. Tina added an equal amount of fertilizer to three of the six pots. She placed the pots in a plant growth chamber where all the seeds... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/5118 | Is a stick of butter a solid, a liquid, or a gas? | [
"a solid",
"a liquid",
"a gas"
] | 0 | 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... | A stick of butter is a solid. A solid has a size and shape of its own.
When butter is warmed, it may melt into a liquid. But when a stick of butter is cold, it has a size and shape of its own. | |
train/5119 | Which country is highlighted? | [
"Tonga",
"Tuvalu",
"Fiji",
"Kiribati"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/5120 | 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 magnetic force is stronger 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 | 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. | 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/5121 | What is the capital of Montana? | [
"Boise",
"Little Rock",
"Helena",
"Billings"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Helena is the capital of Montana. | ||
train/5122 | 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/5123 | What is the capital of Alabama? | [
"Augusta",
"Baton Rouge",
"Montgomery",
"Denver"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Montgomery is the capital of Alabama. | ||
train/5124 | What is the capital of Rhode Island? | [
"Hartford",
"Providence",
"Boston",
"Newport"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/5125 | What type of rock is gneiss? | [
"sedimentary",
"metamorphic"
] | 1 | Gneiss (sounds like "nice") is a type of rock. It can form when a rock is changed by heating and squeezing. This piece of gneiss has dark and light bands. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Gneiss is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by heating and squeezing.
The center of our planet is very hot. Deep below Earth's surface, rocks can be heated to high temperatures. The rocks can also be squeezed by the weight of rocks around them. Sometimes, the heating and ... |
train/5126 | Look at the models of molecules below. Select the elementary substance. | [
"tetraphosphorus",
"cyclopropane",
"propane"
] | 0 | 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/5127 | What is the capital of Nevada? | [
"Las Vegas",
"Pierre",
"Cheyenne",
"Carson City"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Carson City is the capital of Nevada. | ||
train/5128 | Which rhetorical appeal is primarily used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 1 | 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 ethos, or character, by emphasizing the bank's core values. | |
train/5129 | Which type of relationship is formed when a brown-headed cowbird lays an egg in a yellow warbler nest? | [
"parasitic",
"commensal",
"mutualistic"
] | 0 | Read the passage. Then answer the question.
Brown-headed cowbirds lay their eggs in the nests of yellow warblers or other songbirds. When a cowbird egg hatches, the warbler parents feed and raise the cowbird chick as their own. This way, the cowbird parents don't spend their own energy raising their offspring. The war... | closed choice | grade7 | natural science | biology | Ecological interactions | Classify symbiotic relationships | When two organisms of different species interact in a way that affects one or both organisms, they form a symbiotic relationship. The word symbiosis comes from a Greek word that means living together. Scientists define types of symbiotic relationships based on how each organism is affected.
This table lists three commo... | When a brown-headed cowbird lays its egg in a yellow warbler nest, the cowbird doesn't spend its own energy raising its offspring. So, the cowbird benefits from its relationship with the warblers.
The warblers are not able to raise as many of their own offspring because they are busy taking care of the cowbird chick. S... |
train/5130 | What is the name of the colony shown? | [
"Rhode Island",
"South Carolina",
"Maryland",
"North Carolina"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is South Carolina. | ||
train/5131 | Which of the following could Trudy's test show? | [
"if adding the blade guards made the drone fly poorly",
"if the blade guards would break in a crash",
"how much the drone weighed with the blade guards"
] | 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 | 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/5132 | What is the capital of Alaska? | [
"Olympia",
"Juneau",
"Cambridge",
"Anchorage"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | ||
train/5133 | What is the capital of Indiana? | [
"Indianapolis",
"Des Moines",
"Jefferson City",
"Fort Wayne"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | ||
train/5134 | Identify the question that Edwin's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Edwin mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He a... | 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/5135 | What is the capital of Virginia? | [
"Boulder",
"Bismarck",
"Arlington",
"Richmond"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/5136 | In this experiment, which were part of a control group? | [
"the plots with no fires",
"the plots with fires"
] | 0 | The passage below describes an experiment.
Dr. Christensen was the land manager for a prairie. The prairie had become overrun by unwanted grasses that were crowding out other plants. Dr. Christensen thought she could use fire to remove the unwanted grasses.
Dr. Christensen marked off six plots within a large area of t... | 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, Dr. Christensen investigated whether burning plots of prairie affects which grasses grow. The plots with no fires were not burned. So, they were part of a control group. |
train/5137 | What is the capital of Virginia? | [
"Richmond",
"Birmingham",
"Arlington",
"Norfolk"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | ||
train/5138 | Select the organism in the same genus as the North American beaver. | [
"Lontra canadensis",
"Castor canadensis",
"Chroicocephalus novaehollandiae"
] | 1 | This organism is a North American beaver. Its scientific name is Castor canadensis. | 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 North American beaver's scientific name is Castor canadensis. The first word of its scientific name is Castor.
This organism and the North American beaver are in the same genus and the same species! Both organisms have the same scientific name, Castor canadensis.
Chroicocephalus novaehollandiae is in the genus Chroic... |
train/5139 | Which country is highlighted? | [
"New Zealand",
"Australia",
"the Marshall Islands",
"Papua New Guinea"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is New Zealand. | ||
train/5140 | 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 | 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/5141 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"neither; the samples have the same temperature",
"sample B"
] | 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 sample A has more mass than each particle in sample B. The particles in sample A also have a higher average speed than the particles 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 ... |
train/5142 | Which of these continents does the equator intersect? | [
"Australia",
"Asia",
"North America"
] | 1 | 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 equator is the line at 0° latitude. It intersects Asia. It does not intersect North America or Australia. | |
train/5143 | 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 2.",
"The magnitude of the magnetic force is smaller 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. | 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/5144 | Identify the question that Dave'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.
Dave 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, Dave watched cardinals visiting the feeders dur... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/5145 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | 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/5146 | Which of these states is farthest west? | [
"New York",
"New Hampshire",
"Delaware",
"South Carolina"
] | 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 west arrow is pointing. South Carolina is farthest west. | |
train/5147 | Which statement is supported by these pictures? | [
"The douc has long fingers and toes, and so did Mesopithecus.",
"The douc has gray fur, and so did Mesopithecus."
] | 0 | Look at the two pictures below. The douc is a modern organism, and Mesopithecus is an extinct one. The douc has many of the traits that Mesopithecus had. | closed choice | grade4 | natural science | earth-science | Fossils | Compare ancient and modern organisms: use observations to support a hypothesis | Fossils are the remains of organisms that lived long ago. Scientists look at fossils to learn about the traits of ancient organisms. Often, scientists compare fossils to modern organisms.
Some ancient organisms had many traits in common with modern organisms. Other ancient organisms were very different from any organis... | The douc has long fingers and toes. It has gray fur on its chest and belly.
This drawing shows the bones of long fingers and toes. So, Mesopithecus had long fingers and toes.
The drawing of Mesopithecus does not show fur. So, you cannot tell from the fossil whether Mesopithecus had gray fur.
Choice "The douc has gray f... |
train/5148 | Identify the question that Abby's experiment can best answer. | [
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?",
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Abby prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Abby soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the other fiv... | 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/5149 | 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 | 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/5150 | Which is the main persuasive appeal used in this ad? | [
"pathos (emotion)",
"ethos (character)",
"logos (reason)"
] | 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 pathos, or emotion. It appeals to a desire for fun and adventure. | |
train/5151 | In which region did the Republican candidate do the best? | [
"the South",
"the West",
"the Northeast"
] | 2 | By the 1850s, slavery was a major issue in presidential elections. In 1856, the antislavery Republican Party competed in its first presidential election. Use the election map to answer the question below. | closed choice | grade4 | social science | us-history | Early 19th century American history | Antebellum Period: slavery and politics part II | ||
train/5152 | Which part of the turnip plant do we usually eat? | [
"the stem",
"the root",
"the fruit"
] | 1 | People use turnip plants for food. We usually eat the part of this plant that takes in water and nutrients. It holds the plant in place in the soil. | 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 turnip plant we usually eat is the root. It takes in water and nutrients. It also holds the plant in place in the soil. |
train/5153 | What is the capital of Oklahoma? | [
"Tulsa",
"Oklahoma City",
"Frankfort",
"Tallahassee"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Oklahoma City is the capital of Oklahoma. | ||
train/5154 | Which statement describes the Buffalo Gap National Grassland ecosystem? | [
"It has cold winters and cool summers.",
"It has hot summers and cool winters."
] | 1 | Figure: Buffalo Gap National Grassland.
Buffalo Gap National Grassland is a prairie grassland ecosystem in southwestern South Dakota. It is home to the endangered black-footed ferret. This is the only kind of ferret that is native to North America. | closed choice | grade5 | 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 prairie grassland is a type of ecosystem. Prairie grasslands have the following features: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. So, the following statements describe the Buffalo Gap National Grassland ecosystem: hot summers and cool winters, a medium amount of rain... |
train/5155 | Which of the following could Diana's test show? | [
"whether she added enough nutrients to help the bacteria produce 20% more insulin",
"whether producing more insulin would help the bacteria grow faster",
"whether different types of bacteria would need different nutrients to produce insulin"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/5156 | What is the name of the colony shown? | [
"South Carolina",
"Rhode Island",
"Wisconsin",
"Delaware"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Rhode Island. | ||
train/5157 | Is malachite a mineral or a rock? | [
"rock",
"mineral"
] | 1 | Malachite has the following properties:
light-green streak
not made by living things
fixed crystal structure
pure substance
solid
found in nature | 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... | Malachite has all the properties of a mineral. So, malachite is a mineral. |
train/5158 | Which of these states is farthest west? | [
"Kentucky",
"Michigan",
"Montana",
"Florida"
] | 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 west arrow is pointing. Montana is farthest west. | |
train/5159 | What is the capital of Indiana? | [
"Springfield",
"Saint Paul",
"Indianapolis",
"Fort Wayne"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | ||
train/5160 | Which animal's body is better adapted for protection against a predator with sharp teeth? | [
"European robin",
"queen conch"
] | 1 | s are adapted to protect themselves from a predator with sharp teeth. They have hard outer shells covering their bodies. An can pull its head and legs into its shell when attacked.
Figure: African spurred tortoise. | 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 African spurred tortoise.
The African spurred tortoise has a hard outer shell. Its body is adapted for protection against a predator with sharp teeth. The hard shell makes it difficult for predators to hurt or kill the African spurred tortoise.
Now look at each animal. Figure out which animal... |
train/5161 | Which animal is also adapted to be camouflaged in the snow? | [
"short-tailed weasel",
"lion"
] | 0 | s live in the Canadian Arctic and Greenland. The is adapted to be camouflaged in the snow.
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 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.
During the winter, the short-tailed weasel has white ... |
train/5162 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"peppered moth",
"crown-of-thorns sea star"
] | 1 | Opalescent nudibranchs have stinging cells in their brightly colored skin. The bright colors serve as a warning sign that the animal is toxic and dangerous. The 's skin is adapted to ward off predators.
Figure: opalescent nudibranch. | 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 opalescent nudibranch.
The opalescent nudibranch has stinging cells in its brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the opalescent nudibranch is toxic and dangerous.
Now look at each animal. Figure out which animal has a ... |
train/5163 | Which of these states is farthest east? | [
"Washington",
"California",
"Oklahoma",
"Montana"
] | 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 east arrow is pointing. Oklahoma is farthest east. | |
train/5164 | What is the capital of Wisconsin? | [
"Pierre",
"Milwaukee",
"Green Bay",
"Madison"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Madison is the capital of Wisconsin. | ||
train/5165 | Which ocean is highlighted? | [
"the Pacific Ocean",
"the Arctic Ocean",
"the Atlantic 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 Arctic Ocean. | |
train/5166 | What is the capital of Hawaii? | [
"Hilo",
"Manchester",
"Sacramento",
"Honolulu"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | ||
train/5167 | What is the capital of Wyoming? | [
"Sacramento",
"Cheyenne",
"Little Rock",
"Anchorage"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Cheyenne is the capital of Wyoming. | ||
train/5168 | Which property do these three objects have in common? | [
"sour",
"blue",
"salty"
] | 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 lemon has a sour taste. None of the objects are sour.
Potato chips have a salty taste. All three objects are salty.
Blue is a color.
This color is blue. The pretzel and the cracker are not blue.
The property that all three objects have in common is... |
train/5169 | Which of these states is farthest north? | [
"California",
"Maryland",
"South Dakota",
"Kansas"
] | 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 north arrow is pointing. South Dakota is farthest north. | |
train/5170 | What is the capital of North Dakota? | [
"Salem",
"Lincoln",
"Fargo",
"Bismarck"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Bismarck is the capital of North Dakota. | ||
train/5171 | 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. | 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,... | 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 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. |
train/5172 | Complete the sentence.
The Karakoram Range formed at a () boundary. | [
"divergent",
"transform",
"convergent"
] | 2 | Read the passage and look at the picture.
The Karakoram Range is a mountain range that extends into Afghanistan, China, India, Pakistan, and Tajikistan. This range has many tall mountains, including K2, the second-tallest peak on Earth. K2 rises 8,611 meters above sea level.
The Karakoram Range formed as the Indo-Austr... | 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 divergent boundary, two plates are moving away from each other.
At a trans... | To figure out what type of plate boundary formed the Karakoram Range, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Karakoram Range is a mountain range that extends into Afghanistan, China, India, Pakistan, and Tajikistan. This range has many tall mountains, incl... |
train/5173 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"crown-of-thorns sea star",
"gray tree frog"
] | 0 | Lionfish 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 's skin is adapted to ward off predators.
Figure: lionfish. | 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 lionfish.
The lionfish 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 lionfish is venomous.
Now look at each animal. Figure out which animal has a similar adaptation.
The crown-of-thorns sea star has... |
train/5174 | Which animal's feet are also adapted for digging? | [
"prairie dog",
"bottlenose dolphin"
] | 0 | s are found in parts of Europe. They dig and live in burrows. The feet of the are adapted for digging.
Figure: Alpine marmot. | 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.
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 Alpine marmot.
The Alpine marmot has long, straight claws. Its feet are adapted for digging. The Alpine marmot 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 prairie dog has long, straight claws. Its f... |
train/5175 | Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each blue 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 blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... |
train/5176 | Which continent is highlighted? | [
"Europe",
"Australia",
"Antarctica",
"South America"
] | 2 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Antarctica. | |
train/5177 | Which trait did Glyptodon have? Select the trait you can observe on the fossil. | [
"long flippers",
"a shell on its back"
] | 1 | This picture shows the fossil of an ancient animal called Glyptodon. Glyptodon lived over 10,000,000 years ago. | closed choice | grade5 | 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/5178 | Which continent was involved in the Seven Years' War? | [
"North America",
"Australia"
] | 0 | The French and Indian War took place in North America in the 1750s and 1760s. That war was part of a much larger conflict known as the Seven Years' War. The map below highlights the countries and territories that fought in the Seven Years' War. Use the map to answer the question below. | closed choice | grade8 | social science | us-history | The American Revolution | Causes of the American Revolution: the French and Indian War | Look at the map.
The map shows that the conflict involved countries and territories throughout North America, South America, Africa, Europe, and Asia. The only continents not involved were Australia, where no Europeans had settled, and Antarctica, where no humans lived.
The French and Indian War was part of a global wa... | |
train/5179 | What is the name of the colony shown? | [
"New Jersey",
"Connecticut",
"New York",
"Pennsylvania"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Pennsylvania. | ||
train/5180 | Which property matches this object? | [
"hard",
"soft"
] | 0 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A soft object changes shape when pressed or squeezed. The gold ring is not soft.
A hard object does not change shape when pressed or squeezed. The gold ring is hard. |
train/5181 | Which property matches this object? | [
"rough",
"stretchy"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A rough object feels scratchy when you touch it. The rubber toys is not rough.
A stretchy object gets longer when you pull on it. The rubber toys is stretchy. |
train/5182 | Based on the table, what did Ruth Handler invent? | [
"the Rubik's Cube",
"the Barbie doll"
] | 1 | This table shows the inventors of some popular toys. | closed choice | grade5 | 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... | In a table, each cell gives information related to its row and column. This table shows the inventors of some popular toys.
Look in the Inventor column and find Ruth Handler. Then, follow that row to the right to see what the Toy is. The right column tells you that Ruth Handler invented the Barbie doll. |
train/5183 | Select the mammal below. | [
"sea otter",
"bull shark"
] | 0 | Mammals have hair or fur and feed their young milk. A red kangaroo is an example of a mammal. | 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 sea otter is a mammal. It has fur and feeds its young milk.
A bull shark is a fish. It lives underwater. It has fins, not limbs. |
train/5184 | During this time, thermal energy was transferred from () to (). | [
"each pizza . . . the surroundings",
"the surroundings . . . each pizza"
] | 0 | Riley was delivering two identical pizzas to a customer. While driving to the customer's house, Riley put one of the pizza boxes on top of the other one. This table shows how the temperature of each pizza changed over 15minutes. | 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 pizza decreased, which means that the thermal energy of each pizza decreased. So, thermal energy was transferred from each pizza to the surroundings. |
train/5185 | Is trachyte a mineral or a rock? | [
"mineral",
"rock"
] | 1 | Trachyte has the following properties:
solid
not a pure substance
not made by organisms
made of light and dark mineral grains
no fixed crystal structure
naturally occurring | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of trachyte match the properties of a rock. So, trachyte is a rock. |
train/5186 | What is the name of the colony shown? | [
"Rhode Island",
"Pennsylvania",
"New Hampshire",
"Ohio"
] | 2 | 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/5187 | Which is this organism's scientific name? | [
"Castor canadensis",
"North American beaver"
] | 0 | This organism is Castor canadensis. It is also called a North American beaver. | closed choice | grade5 | natural science | biology | 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,... | Castor canadensis is written in italics. The first word is capitalized, and the second word is not.
So, Castor canadensis is the scientific name. |
train/5188 | What is the capital of Mississippi? | [
"Baton Rouge",
"Biloxi",
"Jackson",
"Columbia"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Jackson is the capital of Mississippi. | ||
train/5189 | Which of these states is farthest west? | [
"Connecticut",
"Vermont",
"Virginia",
"Maine"
] | 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. Virginia is farthest west. | |
train/5190 | Which property do these three objects have in common? | [
"sticky",
"soft",
"scratchy"
] | 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 soft object changes shape when pressed or squeezed. The wool sweater is soft, but the tree bark is not.
A scratchy object is rough and itchy against your skin. All three objects are scratchy.
A sticky object can attach or stick to other things. The... |
train/5191 | Identify the question that Elise's experiment can best answer. | [
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?",
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Elise prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Elise soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the other f... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | |
train/5192 | 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."
] | 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 | 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 farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. |
train/5193 | What is the capital of New Mexico? | [
"Cheyenne",
"Santa Fe",
"Juneau",
"Albuquerque"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Santa Fe is the capital of New Mexico. | ||
train/5194 | Based on the text, how does a sloth's fur help protect it? | [
"A sloth's fur protects its important organs.",
"A sloth's fur helps it hide from predators.",
"A sloth's fur helps it cling to tree branches."
] | 1 | Read the text about sloths.
Sloths are known for being one of the slowest animals on the planet. They also sleep up to twenty hours every day. Even though sloths are lethargic, they manage to stay safe by living in the treetops of South and Central America. Sloths have special qualities that help them spend their lives... | closed choice | grade5 | language science | reading-comprehension | Informational texts: level 1 | Read passages about animals | Look at the text in bold below. It tells you two ways a sloth's fur helps protect it.
For example, sloths' long fur grows in the opposite direction from that of most animals. Most animals' fur grows downward, which helps rainwater run down off the animal. Sloths' fur, however, grows upward. When a sloth is hanging upsi... | |
train/5195 | Select the bird below. | [
"bald eagle",
"goldfish"
] | 0 | Birds have feathers, two wings, and a beak. A woodpecker is an example of a bird. | 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 goldfish is a fish. It lives underwater. It has fins, not limbs.
A bald eagle is a bird. It has feathers, two wings, and a beak. |
train/5196 | Which country is highlighted? | [
"Tuvalu",
"Tonga",
"Fiji",
"Samoa"
] | 1 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | ||
train/5197 | Which of the following best describes an ecosystem in a tropical cloud forest in Costa Rica? | [
"the orchids and the bromeliads",
"the strangler fig trees, the mosses, and the fog",
"the Schroeder's oncidium orchids"
] | 1 | Read the passage. Then answer the question below.
The Monteverde tropical cloud forest in Costa Rica is located about 1,500 meters above sea level. At this high elevation, moisture in the air forms a thick fog that resembles a cloud. The fog collects as droplets on plants and drips into the soil.
Tropical cloud forest... | closed choice | grade7 | natural science | biology | Ecosystems | Describe populations, communities, and ecosystems | In an environment, organisms interact with each other and with their nonliving surroundings. To help describe these interactions, ecologists use specific terms for different types of groups.
A single organism is an individual. Individuals of the same species that live in the same place are part of a population.
Multipl... | |
train/5198 | Which country is highlighted? | [
"Tuvalu",
"the Marshall Islands",
"Vanuatu",
"Nauru"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Nauru. | ||
train/5199 | What is the name of the colony shown? | [
"New York",
"North Carolina",
"Georgia",
"Virginia"
] | 1 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. |
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