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train/3800 | Which material are these blocks made of? | [
"cotton",
"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 blocks.
The interlocking blocks are made of plastic.
Plastic is a strong, light material that can be molded into many shapes. Plastic can be made in almost any color. | |
train/3801 | What can Elise and Terrell trade to each get what they want? | [
"Elise can trade her tomatoes for Terrell's carrots.",
"Terrell can trade his broccoli for Elise's oranges.",
"Elise can trade her tomatoes for Terrell's broccoli.",
"Terrell can trade his almonds for Elise's tomatoes."
] | 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.
Elise and Terrell open their lunch boxes in the school cafeteria. Neither Elise nor Terrell got everything that they wanted. The ... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Elise wants broccoli. Terrell 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/3802 | Select the amphibian below. | [
"coral snake",
"red-eyed tree frog"
] | 1 | Amphibians have moist skin and begin their lives in water. An olive toad is an example of an amphibian. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A red-eyed tree frog is an amphibian. It has moist skin and begins its life in water.
A red-eyed tree frog has sticky pads on its toes. The sticky pads help the red-eyed tree frog hold on to leaves.
A coral snake is a reptile. It has scaly, waterproof skin.
Coral snakes spend most of their time underground or hiding un... |
train/3803 | Select the chemical formula for this molecule. | [
"C2Cl4",
"CCl4",
"CCl",
"C2Cl5"
] | 1 | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Identify chemical formulas for ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | C is the symbol for carbon. According to the legend, carbon atoms are shown in dark gray. Cl is the symbol for chlorine. According to the legend, chlorine atoms are shown in green. This ball-and-stick model shows a molecule with one carbon atom and four chlorine atoms. The chemical formula will contain the symbols C an... | |
train/3804 | Select the organism in the same genus as the western crowned pigeon. | [
"Cyanocitta stelleri",
"Goura scheepmakeri",
"Larus livens"
] | 1 | This organism is a western crowned pigeon. Its scientific name is Goura cristata. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A western crowned pigeon's scientific name is Goura cristata. The first word of its scientific name is Goura.
Goura scheepmakeri is in the genus Goura. The first word of its scientific name is Goura. So, Goura scheepmakeri and Goura cristata are in the same genus.
Cyanocitta stelleri is in the genus Cyanocitta. The fir... |
train/3805 | Which term matches the picture? | [
"decomposer",
"detritivore"
] | 0 | Read the text.
When an animal dies, it still has valuable nutrients stored in its body. Helping return these nutrients to the ecosystem are detritivores and decomposers, both of which feed on dead organic matter. Detritivores, such as worms and some millipedes, eat and internally digest small chunks of dead organic mat... | closed choice | grade8 | language science | word-study | Domain-specific vocabulary | Determine the meaning of domain-specific words with pictures | A decomposer feeds on dead organic matter by externally digesting it and then absorbing it. Mold, a type of fungus, is an example of a decomposer. | |
train/3806 | Identify the question that Jaylen'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.
Jaylen 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 ... | 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/3807 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 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/3808 | Select the reptile below. | [
"western rattlesnake",
"piranha"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A tortoise is an example of a reptile. | 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 piranha is a fish. It lives underwater. It has fins, not limbs.
A western rattlesnake is a reptile. It has scaly, waterproof skin. |
train/3809 | Which of the following could Sandeep'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 | 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/3810 | Which of these states is farthest west? | [
"Rhode Island",
"Illinois",
"Maryland",
"Alabama"
] | 1 | 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. Illinois is farthest west. | |
train/3811 | Which of the following could Lacey and Kathleen's test show? | [
"if a new batch of concrete was firm enough to use",
"if the concrete from each batch took the same amount of time to dry"
] | 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/3812 | Is native copper a mineral or a rock? | [
"mineral",
"rock"
] | 0 | Native copper has the following properties:
melts at high temperatures
fixed crystal structure
not made by organisms
made of the metal copper
solid
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... | Native copper has all the properties of a mineral. So, native copper is a mineral. |
train/3813 | What is the capital of North Carolina? | [
"Raleigh",
"Charlotte",
"Lincoln",
"Santa Fe"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | ||
train/3814 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | 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.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... |
train/3815 | Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Canary Islands.
Long, wispy clouds typically fill the summer skies each year above the Canary Islands.
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 | grade3 | 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.
Long, wispy clouds typically fill the summer skies each year above the Canary Islands.
This passage tells you about the usual pattern of cloud cover in the Canary Islands. This passage does not describe what the weather is like on a particular day. So, this passage describes the climate. |
train/3816 | What can Nick and Gwen trade to each get what they want? | [
"Nick can trade his tomatoes for Gwen's broccoli.",
"Nick can trade his tomatoes for Gwen's carrots.",
"Gwen can trade her broccoli for Nick's oranges.",
"Gwen can trade her almonds for Nick's tomatoes."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Nick and Gwen open their lunch boxes in the school cafeteria. Neither Nick nor Gwen got everything that they wanted. The table be... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Nick wants broccoli. Gwen 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/3817 | What can Rodrigo and Ayana trade to each get what they want? | [
"Rodrigo can trade his tomatoes for Ayana's carrots.",
"Rodrigo can trade his tomatoes for Ayana's broccoli.",
"Ayana can trade her almonds for Rodrigo's tomatoes.",
"Ayana can trade her broccoli for Rodrigo's oranges."
] | 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.
Rodrigo and Ayana open their lunch boxes in the school cafeteria. Neither Rodrigo nor Ayana got everything that they wanted. The ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Rodrigo wants broccoli. Ayana 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/3818 | What type of rock is basalt? | [
"igneous",
"sedimentary"
] | 0 | Basalt is a type of rock. When melted rock cools at the earth's surface, it can form basalt. Basalt is made of small mineral grains. | 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... | Basalt is an igneous rock. Like other igneous rocks, it forms when melted rock cools and hardens.
Melted rock is a hot, thick liquid. As melted rock cools, solid mineral grains begin to form. When the melted rock becomes solid, it forms igneous rock. The word igneous comes from the Latin word ignis, which means fire. |
train/3819 | As the girls pull on the rope, what is the direction of the opposing force? | [
"toward the girls",
"away from the girls"
] | 1 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
A group of boys plays a game of tug-of-war with a group of girls. Think about two of the forces that act on the rope:
The girls pull toward themselves.
The boys pul... | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction the girls pull on the rope.
A group of boys plays a game of tug-of-war with a group of girls. Think about two of the forces that act on the rope:
The girls pull toward themselves.
The boys pull away from the girls.
The text tells you that the girls pull toward themselves. The opposite direction is aw... |
train/3820 | What is the capital of Rhode Island? | [
"Manchester",
"Providence",
"Augusta",
"Newport"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | ||
train/3821 | Which is the main persuasive appeal used in this ad? | [
"pathos (emotion)",
"ethos (character)",
"logos (reason)"
] | 1 | 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 ethos, or character. It focuses on the brand's long history (the original) and on its values (all-natural). | |
train/3822 | What is the capital of Idaho? | [
"Boise",
"Nampa",
"New Orleans",
"Fargo"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Boise is the capital of Idaho. | ||
train/3823 | Which continent is highlighted? | [
"Antarctica",
"Africa",
"Asia",
"South America"
] | 1 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | |
train/3824 | Identify the question that Jeremiah and Dominic's experiment can best answer. | [
"Do ping pong balls travel farther when launched from a 30° angle compared to a 45° angle?",
"Do ping pong balls stop rolling along the ground sooner after being launched from a 30° angle or a 45° angle?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Jeremiah placed a ping pong ball in a catapult, pulled the catapult's arm back to a 45° angle, and launched the ball. Then, Jeremiah launched another ping pong ball, this time pulling the catapult's arm back to a 30° an... | 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/3825 | Which i in row B? | [
"the grocery store",
"the police department",
"the park",
"the restaurant"
] | 2 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The park is in row B. | |
train/3826 | What type of rock is calcarenite? | [
"sedimentary",
"igneous",
"metamorphic"
] | 0 | This is a piece of calcarenite. It is made up of sand-sized pieces of a rock called limestone.
Sometimes, limestone is eroded and then deposited in layers. When layers of limestone pieces build up, the lower layers can get pressed together into calcarenite. | closed choice | grade7 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together, or compacted, to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when ... | Calcarenite is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Material that is eroded in nature is called sediment. Eroded limestone is a type of sediment. Pieces of eroded limestone can be deposited in layers. As the layers build up, the top layers press down on the bottom layers. ... |
train/3827 | What is the capital of Iowa? | [
"Des Moines",
"Madison",
"Bismarck",
"Saint Paul"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | ||
train/3828 | Select the reptile below. | [
"box turtle",
"cane toad"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A Galapagos giant tortoise is an example of a reptile. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A box turtle is a reptile. It has scaly, waterproof skin.
A cane toad is an amphibian. It has moist skin and begins its life in water. |
train/3829 | Which of the following could Tanner's test show? | [
"whether the filter was clogged",
"the amount of bacteria in the water before it was filtered",
"whether an inexpensive filter would become clogged more often"
] | 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/3830 | 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/3831 | Which property do these three objects have in common? | [
"opaque",
"scratchy",
"transparent"
] | 0 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
You can see clearly through a transparent object. None of the objects are transparent.
A scratchy object is rough and itchy against your skin. None of the objects are scratchy.
An opaque object does not let light through. All three objects are opaque... |
train/3832 | Which of the following is a characteristic of tropical coral reefs? | [
"They are used by many different organisms.",
"They are usually found in the deep ocean.",
"They have many large rocks called corals."
] | 0 | A tropical coral reef is a type of ecosystem in the ocean. Tropical coral reefs are found in warm, shallow water near the equator. They have many large formations called corals. Corals may look like rocks or plants, but they are actually structures made up of living animals and can grow over time.
Corals provide shelte... | closed choice | grade7 | natural science | literacy-in-science | Conservation | Coral reef biodiversity and human uses: explore a problem | ||
train/3833 | What is the name of the colony shown? | [
"New Jersey",
"Ohio",
"Connecticut",
"Delaware"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New Jersey. | ||
train/3834 | Which of these states is farthest west? | [
"Mississippi",
"Florida",
"Michigan",
"Montana"
] | 3 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Montana is farthest west. | |
train/3835 | Which month has the highest average precipitation in Santiago? | [
"March",
"October",
"June"
] | 2 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Santiago, look at the graph.
Choice "Mar" is incorrect.
Choice "Jun" is incorrect.
Choice "Oct" is incorrect.
June has an average monthly precipitation of about 80 millimeters. This is higher than in any other month. So, June has the highest average precipitation. |
train/3836 | Which country is highlighted? | [
"Vanuatu",
"Australia",
"New Zealand",
"Papua New Guinea"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Papua New Guinea.
Why does Papua New Guinea share its island with another country?
Papua New Guinea takes up the eastern half of the island of New Guinea. The western half is part of Indonesia, an Asian country.
Beginning in the 17 th century, several countries took control of different parts of the isl... | ||
train/3837 | Select the organism in the same genus as the Ural owl. | [
"Falco peregrinus",
"Ardea goliath",
"Strix aluco"
] | 2 | This organism is a Ural owl. Its scientific name is Strix uralensis. | 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 Ural owl's scientific name is Strix uralensis. The first word of its scientific name is Strix.
Strix aluco is in the genus Strix. The first word of its scientific name is Strix. So, Strix aluco and Strix uralensis are in the same genus.
Ardea goliath is in the genus Ardea. The first word of its scientific name is Ard... |
train/3838 | What is the probability that a budgerigar parakeet produced by this cross will be heterozygous for the body feather color gene? | [
"1/4",
"0/4",
"4/4",
"3/4",
"2/4"
] | 1 | In a group of budgerigar parakeets, some individuals have green body feathers and others have blue body feathers. In this group, the gene for the body feather color trait has two alleles. The allele for green body feathers (B) is dominant over the allele for blue body feathers (b).
This Punnett square shows a cross bet... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | |
train/3839 | Which of these oceans does the prime meridian intersect? | [
"the Atlantic Ocean",
"the Pacific Ocean",
"the Indian Ocean"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | |
train/3840 | Which term matches the picture? | [
"vascular plant",
"nonvascular plant"
] | 0 | Read the text.
There are two main types of plants: vascular and nonvascular. Vascular plants have tubes in their stems that bring water and nutrients to different parts of the plant. These tubes allow vascular plants to grow to be much larger, on average, than nonvascular plants. Nonvascular plants don't have these tub... | closed choice | grade6 | language science | vocabulary | Context clues | Determine the meaning of domain-specific words with pictures | A vascular plant has tubes that carry water and nutrients throughout the plant. These tubes may allow vascular plants, like trees, to grow to be quite tall and survive farther from water sources than non-vascular plants. | |
train/3841 | Select the organism in the same species as the green tree frog. | [
"Hyla cinerea",
"Hyla versicolor",
"Bufo bufo"
] | 0 | This organism is a green tree frog. Its scientific name is Hyla cinerea. | 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 green tree frog's scientific name is Hyla cinerea.
Hyla cinerea is in the same genus as Hyla versicolor, but they are not in the same species.
Organisms in the same species have the same scientific names. Hyla cinerea and Hyla versicolor are different species within the same genus.
Hyla cinerea has the same scientifi... |
train/3842 | Which rhetorical appeal is primarily used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 0 | closed choice | grade12 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals.
Appeals to ethos, or character, show the writer or speaker as trustworthy, authoritative, or sharing important values with the audience. An ad that appe... | The ad appeals to logos, or reason, by highlighting the specific nutrients that the dog food provides. | |
train/3843 | Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. |
train/3844 | What is this wasp's scientific name? | [
"Shireplitis bilboi",
"Paroplitis wesmaeli"
] | 0 | This species of wasp lives in New Zealand. The scientists who discovered this wasp described it as short and stout. Its scientific name refers to the hobbit Bilbo from J. R. R. Tolkien's The Lord of the Rings. | 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 Bilbo Baggins.
The word bilboi refers to Bilbo Baggins. So, this wasp's scientific name is Shireplitis bilboi. |
train/3845 | Which country is highlighted? | [
"Palau",
"Australia",
"Solomon Islands",
"Samoa"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead. | ||
train/3846 | Complete the statement.
Carbon monoxide is (). | [
"a compound",
"an elementary substance"
] | 0 | The model below represents a molecule of carbon monoxide. Carbon monoxide is a poisonous gas that is produced by volcanic eruptions and wildfires. | 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 carbon monoxide 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 che... |
train/3847 | Which of the following could Allie's test show? | [
"whether she added enough nutrients to help the bacteria produce 20% more insulin",
"whether different types of bacteria would need different nutrients to produce insulin",
"whether producing more insulin would help the bacteria grow faster"
] | 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/3848 | Which property matches this object? | [
"rough",
"slippery"
] | 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 slippery object is hard to hold onto or stand on. The yogurt is slippery.
A rough object feels scratchy when you touch it. The yogurt is not rough. |
train/3849 | What is the capital of Montana? | [
"Phoenix",
"Helena",
"Billings",
"Providence"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | ||
train/3850 | Which country is highlighted? | [
"Tuvalu",
"Fiji",
"Tonga",
"Kiribati"
] | 0 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | ||
train/3851 | What is the capital of Texas? | [
"Austin",
"Dallas",
"Columbia",
"Little Rock"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | ||
train/3852 | What is the probability that a leopard produced by this cross will have a black coat? | [
"4/4",
"3/4",
"0/4",
"1/4",
"2/4"
] | 4 | In a group of leopards, some individuals have a spotted coat and others have a black coat. In this group, the gene for the coat pattern trait has two alleles. The allele for a spotted coat (A) is dominant over the allele for a black coat (a).
This Punnett square shows a cross between two leopards. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | |
train/3853 | Why might guarding the nest increase the reproductive success of a female long-tailed sun skink? Complete the claim below that answers this question and is best supported by the passage.
Guarding the nest increases the chances that (). | [
"the female will lay more eggs",
"the female will be injured by a snake",
"the female's eggs will hatch"
] | 2 | Animals often behave in certain ways that can increase their reproductive success. Read the passage about a specific animal behavior. Then, follow the instructions below.
Long-tailed sun skinks are lizards that live in southeast Asia. Most female skinks abandon their nests after laying eggs. But female skinks that liv... | closed choice | grade8 | natural science | literacy-in-science | Adaptations and natural selection | How can animal behaviors affect reproductive success? Identify evidence to support a claim | Animals increase their reproductive success when they have offspring that survive to reproduce.
Animals can increase their chances of having offspring by behaving in ways that help them get partners to mate and reproduce with. These partners are called mates. For example, animals may make special sounds, perform specif... | Look for the part of the passage that describes the effect of guarding the nest. Use this information to determine why this behavior can increase the reproductive success of the female long-tailed sun skink.
Choice "Long-tailed sun skinks are lizards that live in southeast Asia. Most female skinks abandon their nests a... |
train/3854 | Which solution has a higher concentration of purple particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the 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/3855 | What is the capital of Washington? | [
"Pierre",
"Buffalo",
"Olympia",
"Seattle"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | ||
train/3856 | Which ocean is highlighted? | [
"the Arctic Ocean",
"the Pacific Ocean",
"the Atlantic Ocean",
"the Southern Ocean"
] | 3 | 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 Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude. | |
train/3857 | Is the water in a bathtub a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 1 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter i... | The water in a bathtub is a liquid. A liquid takes the shape of any container it is in.
If you move the water from a bathtub into a different container, the water will take the shape of that container. But the water will still take up the same amount of space. | |
train/3858 | In this food web, which organism contains matter that eventually moves to the sea cucumber? | [
"black rockfish",
"sea otter"
] | 1 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade6 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows to the sea cucumber.
The only arrow pointing from the black rockfish leads to the kelp bass. The only arrow pointing from the kelp bass leads to the bat star. No arrows point from the bat star to any ot... |
train/3859 | Identify the question that Josh and Mark's experiment can best answer. | [
"Do ping pong balls stop rolling along the ground sooner after being launched from a 30° angle or a 45° angle?",
"Do ping pong balls travel farther when launched from a 30° angle compared to a 45° angle?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Josh placed a ping pong ball in a catapult, pulled the catapult's arm back to a 45° angle, and launched the ball. Then, Josh launched another ping pong ball, this time pulling the catapult's arm back to a 30° angle. Wit... | 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/3860 | What is the name of the colony shown? | [
"Florida",
"Maine",
"New Hampshire",
"Connecticut"
] | 3 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Connecticut. | ||
train/3861 | Which of these states is farthest west? | [
"Idaho",
"South Carolina",
"Louisiana",
"Florida"
] | 0 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Idaho is farthest west. | |
train/3862 | Which of these states is farthest west? | [
"Massachusetts",
"Maine",
"Utah",
"South Dakota"
] | 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. Utah is farthest west. | |
train/3863 | Which of the following organisms is the producer in this food web? | [
"pine vole",
"bolete fungus",
"persimmon tree",
"gray fox"
] | 2 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade7 | natural science | biology | Ecological interactions | Interpret food webs I | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Producers do not eat other organisms. So, in a food web, producers do not have arrows pointing to them from other organisms.
The gray fox has arrows pointing to it, so it is not a producer.
The silver maple does not have any arrows pointing to it. So, the silver maple is a producer.
The pine vole has arrows pointing to... |
train/3864 | Is soapstone a mineral or a rock? | [
"rock",
"mineral"
] | 0 | Soapstone has the following properties:
slippery
solid
found in nature
no fixed crystal structure
made mostly of talc
not made by organisms | 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 soapstone match the properties of a rock. So, soapstone is a rock. |
train/3865 | Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: Yorkshire Dales.
Yorkshire Dales is a National Park in England. The winds there were blowing from the west last week. Winds that blow from the west are called westerlies.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Yorkshire Dales is a National Park in England. The winds there were blowing from the west last week. Winds that blow from the west are called westerlies.
The underlined part of the passage tells you about the wind direction in Yorkshire Dales last week. This passage describes the atmosphere ... |
train/3866 | Which of these continents does the prime meridian intersect? | [
"Asia",
"North America",
"Antarctica"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Antarctica. It does not intersect Asia or North America. | |
train/3867 | Select the fish below. | [
"flamingo",
"goldfish"
] | 1 | Fish live underwater. They have fins, not limbs. A salmon is an example of a fish. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A goldfish is a fish. It lives underwater. It has fins, not limbs.
A flamingo is a bird. It has feathers, two wings, and a beak. |
train/3868 | Which country is highlighted? | [
"the Federated States of Micronesia",
"New Zealand",
"Australia",
"Papua New Guinea"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Papua New Guinea.
Why does Papua New Guinea share its island with another country?
Papua New Guinea takes up the eastern half of the island of New Guinea. The western half is part of Indonesia, an Asian country.
Beginning in the 17 th century, several countries took control of different parts of the isl... | ||
train/3869 | What is the capital of Kentucky? | [
"Portland",
"Lexington",
"Frankfort",
"Kansas City"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | ||
train/3870 | What is the greater flamingo's scientific name? | [
"Phoenicopterus roseus",
"Phoenicopterus andinus"
] | 0 | The greater flamingo, like other flamingos, often has pink feathers. The greater flamingo's scientific name refers to its pink, or rose-like, color. | 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 its pink or rose-like color.
The word roseus refers to the word rose. So, the greater flamingo's scientific name is Phoenicopterus roseus. |
train/3871 | What is the capital of Connecticut? | [
"Juneau",
"Hartford",
"Des Moines",
"Bridgeport"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | ||
train/3872 | Which animal's skin is also adapted for survival in cold places? | [
"naked mole rat",
"musk ox"
] | 1 | Polar bears live in and around the cold Arctic Ocean. The 's skin is adapted to help the animal survive in cold places.
Figure: polar bear. | 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 polar bear.
The polar bear has skin with thick fur on top and a thick layer of fat underneath it. Its skin is adapted for survival in cold places. The polar bear uses its fur and fat to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
The m... |
train/3873 | What is the capital of Nevada? | [
"Boise",
"Reno",
"Phoenix",
"Carson City"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | ||
train/3874 | Which solution has a higher concentration of yellow particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each yellow 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 yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... |
train/3875 | Which country is highlighted? | [
"Jamaica",
"Cuba",
"Dominica",
"the Dominican Republic"
] | 2 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Dominica. | ||
train/3876 | Which of the following could Tyrone'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/3877 | What is the name of the colony shown? | [
"Alabama",
"Maryland",
"Massachusetts",
"Virginia"
] | 2 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Massachusetts.
The Massachusetts Colony included land that would later become the state of Maine. Maine was never its own colony. | ||
train/3878 | Identify the question that the students' experiment can best answer. | [
"Do balloons kept in freezers have more mass than balloons kept at room temperature?",
"Do balloons get smaller when they are kept in freezers or at room temperature?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
The students in a physics class inflated 30 identical balloons to the same size. The students placed half of the balloons in freezers at 0°F and left half of the balloons at room temperature, which was 68°F. Three hours... | 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/3879 | Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade3 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. |
train/3880 | Which ocean is highlighted? | [
"the Pacific Ocean",
"the Indian Ocean",
"the Arctic Ocean",
"the Atlantic Ocean"
] | 1 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Indian Ocean. | |
train/3881 | What is the expected ratio of offspring with regular leaves to offspring with potato leaves? Choose the most likely ratio. | [
"0:4",
"3:1",
"1:3",
"4:0",
"2:2"
] | 3 | This passage describes the leaf type trait in tomato plants:
Tomato leaves come in many types, including regular leaves and potato leaves. Regular leaves are small and have jagged edges. Potato leaves are large and have smooth edges.
In a group of tomato plants, some individuals have regular leaves and others have pota... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with regular leaves or potato leaves, consider whether each phenotype is the dominant or recessive allele's version of the leaf type trait. The question tells you that the L allele, which is for regular leaves, is dominant over the l allele, which is... |
train/3882 | Which type of force from the woman's hand unplugs the power cord? | [
"push",
"pull"
] | 1 | A woman unplugs a power cord. Her hand applies a force to the cord, and the plug comes out of the socket. | closed choice | grade3 | natural science | physics | Force and motion | Identify pushes and pulls | A force is a push or a pull that one object applies to a second object.
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 woman's hand applies a force to the power cord and unplugs it. The direction of this force is toward the woman's hand. This force is a pull. |
train/3883 | Which animal's body is better adapted for protection against a predator with sharp teeth? | [
"desert tortoise",
"fox snake"
] | 0 | Nautiluses live in the ocean. They have a hard outer shell.
The is adapted to protect itself from predators with sharp teeth. It can pull the soft parts of its body into its shell when attacked.
Figure: nautilus. | 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 nautilus.
The nautilus 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 nautilus.
Now look at each animal. Figure out which animal has a similar adaptation.
The desert tortoise h... |
train/3884 | What is the capital of New Hampshire? | [
"Boston",
"Manchester",
"Norfolk",
"Concord"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Concord is the capital of New Hampshire. | ||
train/3885 | Is the following statement about our solar system true or false?
Neptune's volume is more than 50 times as great as that of Earth. | [
"true",
"false"
] | 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 50 times the volume of Earth.
Then compare the result to the volume of Neptune. The volume of Neptune is 62,530 billion km^3, which is more than 54,500 billion km^3. So, Neptune's volume is more than 50 times as great as that of Earth. |
train/3886 | What is the capital of Tennessee? | [
"Nashville",
"Montgomery",
"Knoxville",
"Charleston"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Nashville is the capital of Tennessee. | ||
train/3887 | Which of the following could Emmy's test show? | [
"whether different types of bacteria would need different nutrients to produce insulin",
"whether producing more insulin would help the bacteria grow faster",
"whether she added enough nutrients to help the bacteria produce 20% more insulin"
] | 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/3888 | Which of the following could Zeke's test show? | [
"which side of the roof got more sun over one day",
"how many solar panels could fit on each side of the roof",
"the amount of sunlight the roof would get throughout the year"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | 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/3889 | Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 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/3890 | 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."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | 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 greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is smaller in Pair 1 than in Pair 2. |
train/3891 | Which solution has a higher concentration of purple particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... |
train/3892 | Which of the following could Anthony'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/3893 | Which animal's limbs are also adapted for swimming? | [
"gerenuk",
"harbor seal"
] | 1 | Bottlenose dolphins live in the Atlantic, Pacific, and Indian Oceans. They live underwater, but come to the surface to breathe air.
The has flippers for limbs. Its limbs are adapted for swimming.
Figure: bottlenose dolphin. | closed choice | grade5 | 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 bottlenose dolphin.
The bottlenose dolphin uses its flippers to push itself through water. The flippers can also help it change direction while swimming.
Now look at each animal. Figure out which animal has a similar adaptation.
The harbor seal has flippers. Its limbs are adapted for swimming... |
train/3894 | 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 weaker in Pair 1.",
"The magnetic force is weaker in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1. |
train/3895 | Which continent is highlighted? | [
"Asia",
"South America",
"Australia",
"Africa"
] | 0 | closed choice | grade4 | 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 Asia. | |
train/3896 | Which of the following could Hakim's test show? | [
"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",
"whether a parachute with a 1 m vent would swing too much at 400 km per hour"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | |
train/3897 | What is the capital of Indiana? | [
"Lexington",
"Indianapolis",
"Fort Wayne",
"Los Angeles"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | ||
train/3898 | Which continent is highlighted? | [
"Antarctica",
"North America",
"South America"
] | 0 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Antarctica. | |
train/3899 | Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 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 ... |
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