image_path stringlengths 7 10 | question stringlengths 14 289 | choices listlengths 2 5 | answer int32 0 4 | hint stringlengths 0 1.85k | task stringclasses 3
values | grade stringclasses 9
values | subject stringclasses 3
values | topic stringclasses 16
values | category stringclasses 75
values | skill stringclasses 158
values | lecture stringclasses 113
values | solution stringlengths 0 2.72k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
train/1700 | What type of rock is sandstone? | [
"igneous",
"sedimentary"
] | 1 | Sandstone is a type of rock. It forms when layers of sand are pressed together to form rock. You can still see the tiny grains of sand in this piece of sandstone. | 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... | Sandstone is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Sand is a type of sediment. It is found in places like deserts and beaches. Sediments like sand can build up in layers. Over time, the top layers press down on the bottom layers. Sedimentary rock forms when the bottom layer... |
train/1701 | Select the organism in the same genus as the common kestrel. | [
"Pelecanus rufescens",
"Ardea alba",
"Falco sparverius"
] | 2 | This organism is a common kestrel. Its scientific name is Falco tinnunculus. | 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 common kestrel's scientific name is Falco tinnunculus. The first word of its scientific name is Falco.
Falco sparverius is in the genus Falco. The first word of its scientific name is Falco. So, Falco sparverius and Falco tinnunculus are in the same genus.
Pelecanus rufescens is in the genus Pelecanus. The first word... |
train/1702 | What is the capital of Illinois? | [
"Springfield",
"Provo",
"Chicago",
"Madison"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | ||
train/1703 | Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each pink 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 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/1704 | Which type of ant is the head of the colony? | [
"the queen",
"the solider",
"the worker"
] | 0 | Read the text about ant colonies.
Tiny ants live and work together in large groups called colonies. A single ant colony may have millions of ants living together in a nest with many tunnels and rooms. The queen ant is the head of the colony, but each ant in the colony has a job to do. The queen ant produces all of the ... | closed choice | grade3 | language science | reading-comprehension | Informational texts: level 1 | Read passages about animals | Look at the text in bold below. It tells you which type of ant is the head of the colony.
A single ant colony may have millions of ants living together in a nest with many tunnels and rooms. The queen ant is the head of the colony, but each ant in the colony has a job to do. | |
train/1705 | Which animal's skin is also adapted for survival in cold places? | [
"armadillo lizard",
"snowy owl"
] | 1 | Snow leopards live in the cold, snowy mountains of Central Asia. The 's skin is adapted to help the animal survive in cold places.
Figure: snow leopard. | 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 snow leopard.
The snow leopard has thick fur covering its skin. Its skin is adapted for survival in cold places. The snow leopard uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
The snowy owl has a thick coat of feathers co... |
train/1706 | Identify the question that Evelyn's experiment can best answer. | [
"Do slugs eat more from tomato leaves or broccoli leaves?",
"Do slugs weigh more after eating tomato leaves or broccoli leaves?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Evelyn 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/1707 | Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each green 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 green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... |
train/1708 | What is the capital of Texas? | [
"Austin",
"Frankfort",
"Santa Fe",
"Houston"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | ||
train/1709 | 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/1710 | Which property do these four objects have in common? | [
"stretchy",
"fragile",
"flexible"
] | 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.
A fragile object will break into pieces if you drop it. The belt, the feather, and the handkerchief are not fragile.
A stretchy object gets longer when you pull on it. The feather is not stretchy.
A flexible object can be folded or bent without break... |
train/1711 | Is the following statement about our solar system true or false?
There are twice as many ice planets as rocky planets. | [
"false",
"true"
] | 0 | 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 there are two ice planets and four rocky planets. So, there are half as many ice planets as rocky planets. |
train/1712 | Which of the following could Trevor's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/1713 | What is the capital of Arizona? | [
"Sacramento",
"Santa Fe",
"Tucson",
"Phoenix"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Phoenix is the capital of Arizona. | ||
train/1714 | Which of these cities is marked on the map? | [
"Phoenix",
"Las Vegas",
"Denver",
"San Jose"
] | 0 | closed choice | grade5 | social science | geography | Cities | Cities of the West | The city is Phoenix, Arizona. Denver, San Jose, and Las Vegas are marked with gray circles on the map below. | ||
train/1715 | What is the name of the colony shown? | [
"Rhode Island",
"Illinois",
"Massachusetts",
"Ohio"
] | 0 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Rhode Island. | ||
train/1716 | Which animal's skin is better adapted as a warning sign to ward off predators? | [
"Spanish shawl nudibranch",
"fantastic leaf-tailed gecko"
] | 0 | Golden dart frogs have poisonous glands in their brightly colored skin. The bright color serves as a warning sign that the animal is poisonous. The 's skin is adapted to ward off predators.
Figure: golden dart frog. | 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 golden dart frog.
The golden dart frog has poisonous glands in its brightly colored skin. Its skin is adapted to ward off predators. The bright colors serve as a warning sign that the golden dart frog is poisonous.
Now look at each animal. Figure out which animal has a similar adaptation.
The... |
train/1717 | Which specific humidity level was measured within the outlined area shown? | [
"13 grams of water vapor per kilogram of air",
"10 grams of water vapor per kilogram of air",
"23 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on October 28, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in Asia on that day.
Look at the map. Then, answer the question below.
Data source: United States ... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
23 grams of water vapor per kilogram... |
train/1718 | Which property do these three objects have in common? | [
"transparent",
"fuzzy",
"yellow"
] | 1 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
You can see clearly through a transparent object. The yarn pom pom and the stuffed dice are not transparent.
A fuzzy object is covered in soft hair. All three objects are fuzzy.
Yellow is a color.
This color is yellow. The yarn pom pom and the stuffe... |
train/1719 | What is the capital of Minnesota? | [
"Topeka",
"Baton Rouge",
"Fargo",
"Saint Paul"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | ||
train/1720 | What is the capital of Kentucky? | [
"Jefferson City",
"Atlanta",
"Louisville",
"Frankfort"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | ||
train/1721 | What is the name of the colony shown? | [
"Michigan",
"Georgia",
"New Hampshire",
"Virginia"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Georgia. | ||
train/1722 | Which animal's feet are also adapted for walking on large, floating leaves? | [
"wattled jacana",
"New Zealand falcon"
] | 0 | Bronze-winged jacanas live near rivers and lakes. They eat insects and snails that live on plants floating on the surface of the water.
The feet of the jacana are adapted for walking on large, floating leaves. The jacana uses its feet to spread its weight out over a wide area. This helps the bird walk on the leaves wit... | 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 bronze-winged jacana.
The bronze-winged jacana uses its toes to spread its weight out over a large area. This can help it walk on leaves without sinking into the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The wattled jacana has long, thin toes on its fee... |
train/1723 | Which country is highlighted? | [
"Haiti",
"Saint Lucia",
"Saint Vincent and the Grenadines",
"Barbados"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Lucia. | ||
train/1724 | What is the capital of Colorado? | [
"Denver",
"Saint Louis",
"Frankfort",
"Colorado Springs"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Denver is the capital of Colorado. | ||
train/1725 | Which country is highlighted? | [
"Tuvalu",
"Fiji",
"Samoa",
"Tonga"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | ||
train/1726 | What is the direction of this push? | [
"toward the soccer player's head",
"away from the soccer player's head"
] | 1 | A soccer player pushes the ball up the field with her head. | closed choice | grade2 | natural science | physics | Force and motion | Identify pushes and pulls | One object can make another object move with a push or a pull.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The soccer player pushes the ball away from her head. The ball moves up the field. The direction of the push is away from the soccer player's head. |
train/1727 | Is aquamarine a mineral or a rock? | [
"rock",
"mineral"
] | 1 | Aquamarine has the following properties:
pure substance
solid
naturally occurring
not made by living things
fixed crystal structure
non-metallic luster | 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... | Aquamarine has all the properties of a mineral. So, aquamarine is a mineral. |
train/1728 | Is the following statement about our solar system true or false?
Earth is the largest planet that is made mainly of rock. | [
"false",
"true"
] | 1 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | The table tells you that Mercury, Venus, Earth, and Mars are the planets made mainly of rock. Of these planets, Earth has the volume with the largest exponent. So, Earth is the largest planet that is made mainly of rock. |
train/1729 | What is the name of the colony shown? | [
"South Carolina",
"Connecticut",
"Georgia",
"Maryland"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | ||
train/1730 | What is the capital of Arkansas? | [
"Philadelphia",
"Charlotte",
"Tallahassee",
"Little Rock"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. | ||
train/1731 | Which animal is also adapted for flight? | [
"nilgai",
"gray-headed albatross"
] | 1 | Flamingos fly long distances every year in search of food and places to nest. They have wings instead of arms. Flamingos are adapted for flight.
Figure: flamingo. | 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 flamingo.
The flamingo has large, powerful wings. It is adapted for flight. Long, powerful wings help the flamingo travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The gray-headed albatross has long, powerful wings. It is adapted for fli... |
train/1732 | What can Lara and Elena trade to each get what they want? | [
"Elena can trade her almonds for Lara's tomatoes.",
"Lara can trade her tomatoes for Elena's carrots.",
"Lara can trade her tomatoes for Elena's broccoli.",
"Elena can trade her broccoli for Lara's oranges."
] | 2 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Lara and Elena open their lunch boxes in the school cafeteria. Neither Lara nor Elena got everything that they wanted. The table ... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Lara wants broccoli. Elena wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | |
train/1733 | What is the name of the colony shown? | [
"Virginia",
"Georgia",
"Massachusetts",
"Michigan"
] | 0 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | ||
train/1734 | Which country is highlighted? | [
"Papua New Guinea",
"Australia",
"Vanuatu",
"Nauru"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Nauru. | ||
train/1735 | What is the capital of Colorado? | [
"Boulder",
"Denver",
"Colorado Springs",
"Fort Wayne"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Denver is the capital of Colorado. | ||
train/1736 | Select the organism in the same genus as the eastern gray kangaroo. | [
"Equus quagga",
"Macropus rufus",
"Camelus dromedarius"
] | 1 | This organism is an eastern gray kangaroo. Its scientific name is Macropus giganteus. | 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... | An eastern gray kangaroo's scientific name is Macropus giganteus. The first word of its scientific name is Macropus.
Camelus dromedarius is in the genus Camelus. The first word of its scientific name is Camelus. So, Camelus dromedarius and Macropus giganteus are not in the same genus.
Equus quagga is in the genus Equus... |
train/1737 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes 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/1738 | Select the organism in the same species as the Steller's sea eagle. | [
"Falco novaeseelandiae",
"Balearica pavonina",
"Haliaeetus pelagicus"
] | 2 | This organism is a Steller's sea eagle. Its scientific name is Haliaeetus pelagicus. | 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 Steller's sea eagle's scientific name is Haliaeetus pelagicus.
Falco novaeseelandiae does not have the same scientific name as a Steller's sea eagle. So, Haliaeetus pelagicus and Falco novaeseelandiae are not in the same species.
Balearica pavonina does not have the same scientific name as a Steller's sea eagle. So, ... |
train/1739 | Complete the statement.
Bromomethane is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of bromomethane. Bromomethane was once used by farmers to kill harmful organisms in soil. It is no longer used because it damages the atmosphere's ozone layer. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether bromomethane is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemic... |
train/1740 | What is the capital of Florida? | [
"Tallahassee",
"Salem",
"Tampa",
"Orlando"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Tallahassee is the capital of Florida. | ||
train/1741 | Select the organism in the same species as the European wildcat. | [
"Felis silvestris",
"Neofelis nebulosa",
"Lynx canadensis"
] | 0 | This organism is a European wildcat. Its scientific name is Felis silvestris. | 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 European wildcat's scientific name is Felis silvestris.
Felis silvestris has the same scientific name as a European wildcat. So, these organisms are in the same species.
Lynx canadensis does not have the same scientific name as a European wildcat. So, Felis silvestris and Lynx canadensis are not in the same species.
... |
train/1742 | 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/1743 | Select the organism in the same genus as the Canada lynx. | [
"Caprimulgus europaeus",
"Lynx pardinus",
"Cervus canadensis"
] | 1 | This organism is a Canada lynx. Its scientific name is Lynx 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 Canada lynx's scientific name is Lynx canadensis. The first word of its scientific name is Lynx.
Caprimulgus europaeus is in the genus Caprimulgus. The first word of its scientific name is Caprimulgus. So, Caprimulgus europaeus and Lynx canadensis are not in the same genus.
Cervus canadensis and Lynx canadensis are n... |
train/1744 | Which continent is highlighted? | [
"Africa",
"North America",
"Antarctica",
"Australia"
] | 3 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Australia. | |
train/1745 | Which animal's skin is also adapted for survival in cold places? | [
"naked mole rat",
"snowy owl"
] | 1 | Arctic wolves live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.
Figure: Arctic wolf. | 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 wolf.
The Arctic wolf has thick fur covering its skin. Its skin is adapted for survival in cold places. The Arctic wolf uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
The snowy owl has a thick coat of feathers cover... |
train/1746 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... |
train/1747 | What is the capital of Alaska? | [
"Wilmington",
"Anchorage",
"Carson City",
"Juneau"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Juneau is the capital of Alaska. | ||
train/1748 | What is the capital of Alaska? | [
"Anchorage",
"Green Bay",
"Salt Lake City",
"Juneau"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | ||
train/1749 | 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 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/1750 | Is the following statement about our solar system true or false?
Half of the planets are made mainly of gas or ice. | [
"true",
"false"
] | 0 | 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 of the eight planets, two are made mainly of gas and two are made mainly of ice. So, four of the eight, or half, of the planets are made mainly of gas or ice. |
train/1751 | Which statement describes the Kibale National Forest ecosystem? | [
"It has many different types of organisms.",
"It has mostly small plants."
] | 0 | Figure: Kibale National Forest.
Kibale National Forest is a tropical rain forest ecosystem in Uganda, a country in eastern Africa. This rain forest is home to many African primates, including chimpanzees. | 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 tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, the following statements describe the Kibale National Forest ecosystem: year-round rain and warm temperature... |
train/1752 | Which of these states is farthest west? | [
"West Virginia",
"Maine",
"Vermont",
"Delaware"
] | 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 west arrow is pointing. West Virginia is farthest west. | |
train/1753 | What is the capital of Rhode Island? | [
"Concord",
"Providence",
"Annapolis",
"Montpelier"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/1754 | Which property do these three objects have in common? | [
"colorful",
"fuzzy",
"sticky"
] | 0 | 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 fuzzy object is covered in soft hair. The socks are fuzzy, but the building blocks and the silk tie are not.
A colorful object has one or more bright colors. All three objects are colorful.
A sticky object can attach or stick to other things. None ... |
train/1755 | What is the capital of Idaho? | [
"Fort Wayne",
"Nampa",
"Boise",
"Salt Lake City"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Boise is the capital of Idaho. | ||
train/1756 | What is the name of the colony shown? | [
"Wisconsin",
"Delaware",
"New Hampshire",
"New York"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Delaware. | ||
train/1757 | Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | 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 | 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/1758 | Which of these states is farthest west? | [
"Virginia",
"New Hampshire",
"Indiana",
"Mississippi"
] | 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. Mississippi is farthest west. | |
train/1759 | Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each green 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 green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... |
train/1760 | Look at the models of molecules below. Select the elementary substance. | [
"cyclooctasulfur",
"silane",
"bromomethane"
] | 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/1761 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Hallstatt, Austria.
Hallstatt is a village in Austria, a country known for winter sports such as skiing and snowboarding. It was 4°C in Hallstatt yesterday.
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.
Hallstatt is a village in Austria, a country known for winter sports such as skiing and snowboarding. It was 4°C in Hallstatt yesterday.
The underlined part of the passage tells you about the temperature in Hallstatt yesterday. This passage describes the atmosphere at a certain place and tim... |
train/1762 | Which statement is true about the average monthly precipitation in Nairobi? | [
"More precipitation falls in April than in August.",
"More precipitation falls in September than in November.",
"Nairobi gets about the same amount of precipitation each month."
] | 0 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Nairobi, look at the graph.
Choice "Apr" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Nov" is incorrect.
Choice "Nairobi gets about the same amount of precipitation each month." is incorrect.
On average, less precipitation falls between June... |
train/1763 | Look at the picture. Which word best describes the sound this bell makes? | [
"popping",
"scratching",
"ringing"
] | 2 | 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 ringing describes the sound this bell makes.
Popping and scratching can also describe sounds. But they do not describe the sounds this bell makes. | |
train/1764 | Which better describes the Daintree rain forest ecosystem? | [
"It has year-round warm temperatures. It also has many different types of organisms.",
"It has cold winters. It also has soil that is rich in nutrients."
] | 0 | Figure: Daintree rain forest.
The Daintree rain forest is a tropical rain forest ecosystem in northeastern Australia. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, the Daintree rain forest has year-round warm temperatures. It also has many different types of organisms. |
train/1765 | Complete the statement.
Trichlorofluoromethane is (). | [
"a compound",
"an elementary substance"
] | 0 | The model below represents a molecule of trichlorofluoromethane. Trichlorofluoromethane was once used in refrigerators and fire extinguishers. It is no longer used because it harms the atmosphere's ozone layer. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether trichlorofluoromethane is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of ... |
train/1766 | What is the name of the colony shown? | [
"Pennsylvania",
"Rhode Island",
"New York",
"Ohio"
] | 2 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | ||
train/1767 | What can Aiden and Bonnie trade to each get what they want? | [
"Bonnie can trade her almonds for Aiden's tomatoes.",
"Aiden can trade his tomatoes for Bonnie's broccoli.",
"Bonnie can trade her broccoli for Aiden's oranges.",
"Aiden can trade his tomatoes for Bonnie's sandwich."
] | 1 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Aiden and Bonnie open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Aiden wanted b... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Aiden wanted broccoli in his lunch and Bonnie was hoping for tomatoes. Look at the labeled part of the images.
Aiden has tomatoes. Bonnie has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | |
train/1768 | Which state is highlighted? | [
"Connecticut",
"Rhode Island",
"Maryland",
"Delaware"
] | 0 | closed choice | grade3 | social science | geography | States | Identify states of the Northeast | This state is Connecticut. | ||
train/1769 | Which better describes the Białowieża Forest ecosystem? | [
"It has warm, dry summers. It also has many different types of trees.",
"It has cold, wet winters. It also has soil that is rich in nutrients."
] | 1 | Figure: Białowieża Forest.
The Białowieża Forest is a temperate deciduous forest ecosystem in Poland and Belarus. | 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, the Białowieża Forest has cold, wet winters. It also has soil that is rich in nutrients. |
train/1770 | 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/1771 | Select the bird below. | [
"barn owl",
"thresher shark",
"red howler",
"box turtle"
] | 0 | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
A blue-footed booby is an example of a bird. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A thresher shark is a fish. It lives underwater. It has fins, not limbs.
A thresher shark has a long tail. It can use its tail to hit and stun prey.
A red howler is a mammal. It has hair and feeds its young milk.
Howler monkeys have loud calls, or howls. Their calls can be heard over three miles away!
A barn owl is a b... |
train/1772 | Identify the question that Jen'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.
Jen prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Jen soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the other five ... | 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/1773 | 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, but some of them are different sizes. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 1 than in Pair 2. So, the magnitud... |
train/1774 | What is the capital of Maine? | [
"Trenton",
"Augusta",
"Portland",
"Sacramento"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | ||
train/1775 | Which material is this straw made of? | [
"wood",
"plastic"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the straw.
The straw is made of plastic.
Plastic is a good material to use for a straw because it is waterproof. | |
train/1776 | Which animal is also adapted for flight? | [
"Arctic tern",
"nilgai"
] | 0 | Flamingos fly long distances every year in search of food and places to nest. They have wings instead of arms. Flamingos are adapted for flight.
Figure: flamingo. | 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 flamingo.
The flamingo has large, powerful wings. It is adapted for flight. Long, powerful wings help the flamingo travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The Arctic tern has long, powerful wings. It is adapted for flight.
The n... |
train/1777 | Select the mammal below. | [
"human",
"red-tailed hawk"
] | 0 | Mammals have hair or fur and feed their young milk. A gorilla 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 red-tailed hawk is a bird. It has feathers, two wings, and a beak.
A human is a mammal. It has hair and feeds its young milk. |
train/1778 | Identify the question that Sasha's experiment can best answer. | [
"Does the amount of water in a glass affect whether eggs sink or float in the water?",
"Are eggs more likely to float in fresh water or salty water?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Sasha poured four ounces of water into each of six glasses. Sasha dissolved one tablespoon of salt in each of three glasses, and did not add salt to the other three. Then, Sasha placed an egg in one glass and observed i... | 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/1779 | Which statement describes the Kaeng Krachan National Park ecosystem? | [
"It has soil that is rich in nutrients.",
"It has only a few types of organisms.",
"It has soil that is poor in nutrients."
] | 2 | Figure: Kaeng Krachan National Park.
Kaeng Krachan National Park is a tropical rain forest ecosystem in western Thailand. It is Thailand's largest national park and has many animals, including elephants. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, the following statement describes the Kaeng Krachan National Park ecosystem: year-round rain and warm temper... |
train/1780 | Which country is highlighted? | [
"Trinidad and Tobago",
"Saint Vincent and the Grenadines",
"Grenada",
"Barbados"
] | 2 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Grenada. | ||
train/1781 | Which country is highlighted? | [
"Grenada",
"Jamaica",
"Dominica",
"Haiti"
] | 3 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Haiti.
Does Haiti have any territorial disputes?
Haiti claims to own Navassa Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
Navassa Island is also claimed by the United States. The United States claimed the island in 18... | ||
train/1782 | Select the organism in the same species as the great egret. | [
"Falco tinnunculus",
"Falco peregrinus",
"Ardea alba"
] | 2 | This organism is a great egret. Its scientific name is Ardea alba. | 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 great egret's scientific name is Ardea alba.
Falco tinnunculus does not have the same scientific name as a great egret. So, Ardea alba and Falco tinnunculus are not in the same species.
Ardea alba has the same scientific name as a great egret. So, these organisms are in the same species.
Falco peregrinus does not hav... |
train/1783 | 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 B",
"sample A"
] | 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 | grade7 | 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/1784 | Which property matches this object? | [
"sticky",
"hard"
] | 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 sticky object can stick to other things. The license plate is not sticky.
A hard object keeps its shape when you squeeze it. The license plate is hard. |
train/1785 | Which i in row A? | [
"the park",
"the gas station",
"the library",
"the grocery store"
] | 0 | 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 park is in row A. | |
train/1786 | What is the capital of California? | [
"Boise",
"Salem",
"Sacramento",
"Saint Louis"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Sacramento is the capital of California. | ||
train/1787 | What evidence of a volcanic eruption does this picture show? | [
"There is smoke coming out of the volcano.",
"Some of the hills are covered in trees."
] | 0 | This picture was taken during a volcanic eruption. A volcanic eruption happens when melted rock comes out from under the ground. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | |
train/1788 | Does Nerium oleander have cells that have a nucleus? | [
"no",
"yes"
] | 1 | This organism is Nerium oleander. It is a member of the plant kingdom.
Nerium oleander is commonly called an oleander plant. Oleander plants are toxic to many animals. Oleander plants contain a poison that can make animals sick. This poison helps protect oleander plants from being eaten by animals. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Nerium oleander is a plant. Plant cells have a nucleus. |
train/1789 | 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 | grade7 | 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/1790 | Is Rangifer tarandus made up of one cell? | [
"yes",
"no"
] | 1 | This organism is Rangifer tarandus. It is a member of the animal kingdom.
Rangifer tarandus is commonly called a reindeer. Both male and female reindeer grow large antlers on their heads. Each year, reindeer naturally shed their antlers. The antlers usually fall off in the spring or summer. Then, over the next three to... | yes or no | grade5 | natural science | biology | Classification | Describe, classify, and compare kingdoms | Rangifer tarandus is an animal. Animals are made up of many cells. | |
train/1791 | Select the organism in the same species as the black howler. | [
"Lontra canadensis",
"Alouatta caraya",
"Ovis canadensis"
] | 1 | This organism is a black howler. Its scientific name is Alouatta caraya. | 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 black howler's scientific name is Alouatta caraya.
Ovis canadensis does not have the same scientific name as a black howler. So, Alouatta caraya and Ovis canadensis are not in the same species.
Alouatta caraya has the same scientific name as a black howler. So, these organisms are in the same species.
Lontra canadens... |
train/1792 | What is the capital of Montana? | [
"Montpelier",
"Helena",
"Indianapolis",
"Biloxi"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | ||
train/1793 | Which animal's feet are also adapted for swimming? | [
"tokay gecko",
"lava gull"
] | 1 | s spend much of their lives at sea. They eat mostly fish, which they catch while swimming and diving. The feet of the are adapted for swimming.
Figure: Atlantic puffin. | 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 Atlantic puffin.
The Atlantic puffin has webbed feet. Its feet are adapted for swimming. As it swims, the Atlantic puffin uses its webbed feet to push itself through water.
Now look at each animal. Figure out which animal has a similar adaptation.
The lava gull has webbed feet. Its feet are a... |
train/1794 | What is the capital of Utah? | [
"Salt Lake City",
"Helena",
"Phoenix",
"Provo"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Salt Lake City is the capital of Utah. | ||
train/1795 | Which of these continents does the equator intersect? | [
"Asia",
"Australia",
"Europe"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects Asia. It does not intersect Australia or Europe. | |
train/1796 | 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... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle 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, sample B mus... |
train/1797 | What is the name of the colony shown? | [
"Connecticut",
"Florida",
"North Carolina",
"Virginia"
] | 2 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | ||
train/1798 | What is the capital of North Carolina? | [
"Charlotte",
"Hartford",
"Raleigh",
"Oklahoma City"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | ||
train/1799 | What is the probability that a Cepaea snail produced by this cross will be homozygous recessive for the shell banding gene? | [
"4/4",
"0/4",
"1/4",
"3/4",
"2/4"
] | 1 | This passage describes the shell banding trait in Cepaea snails:
Cepaea snails live on land in many parts of Europe. The shells of Cepaea snails can have different colors and patterns. Banded shells have dark bands, or stripes, that spiral around their surfaces. Unbanded shells do not have bands.
In a group of Cepaea s... | 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... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.