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What evidence of a wildfire does this picture show? | [
"The trees have straight trunks.",
"The forest floor is on fire."
] | 1 | This picture was taken during a wildfire. A wildfire happens when a natural area catches fire and burns. | 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 ... | ||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... | |
Which of these states is farthest south? | [
"Delaware",
"Oregon",
"Maine",
"Massachusetts"
] | 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 south arrow is pointing. Delaware is farthest south. | ||
Not supported with pagination yet | Select the living thing. | [
"coconut tree",
"piano"
] | 0 | closed choice | grade3 | natural science | biology | Classification | Identify living and nonliving things | All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. Living things use this energy to grow and change. All living things grow and change during their lives.
All living things sense changes in the world around them. Living things might sense ... | A coconut tree is a living thing.
Coconut trees grow and respond to the world around them. They need food and water.
Coconut trees are plants. They make their own food using water, carbon dioxide, and energy from sunlight.
A piano is not a living thing.
Pianos do not have all of the traits of living things. They do not... | |
Not supported with pagination yet | Which tense does the sentence use?
Philip will wash the dishes after dinner. | [
"past tense",
"future tense",
"present tense"
] | 1 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, wash. The verb tells you about something that is going to happen. | |
Which month is the wettest on average in Christchurch? | [
"May",
"December",
"April"
] | 0 | 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 Christchurch, look at the graph.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Dec" is incorrect.
May has an average monthly precipitation of about 70 millimeters. This is higher than in any other month. So, May is the wettest month on average. | |
Not supported with pagination yet | Select the animal. | [
"Water buffalo eat plants.",
"Oleander trees can grow colorful flowers."
] | 0 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | An oleander tree is a plant. It can grow colorful flowers.
There are over 400 different types of oleander plants.
A water buffalo is an animal. It eats plants.
Water buffalo live near water. They can live near rivers or swamps. | |
Which property matches this object? | [
"sticky",
"rough"
] | 0 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A rough object feels scratchy when you touch it. The wet glue is not rough.
A sticky object can stick to other things. The wet glue is sticky. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | Select the one true statement. | [
"Vacuoles store nutrients, water, and waste in animal cells.",
"Plant cells can have mitochondria but do not have vacuoles.",
"In an animal cell, the mitochondria contain the master plan for cell activities and cell development."
] | 0 | closed choice | grade7 | natural science | biology | Cells | Compare cells and cell parts | |||
Which property do these three objects have in common? | [
"slippery",
"blue",
"stretchy"
] | 2 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A slippery object is hard to hold onto or stand on. None of the objects are slippery.
Blue is a color.
This color is blue. None of the objects are blue.
A stretchy object gets longer when you pull on it. All three objects are stretchy.
The property t... | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | 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 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 ... | |
Not supported with pagination yet | What is the mass of a full box of cereal? | [
"475 grams",
"475 kilograms"
] | 0 | Select the better estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose metric units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There... | The better estimate for the mass of a full box of cereal is 475 grams.
475 kilograms is too heavy. |
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 | 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 A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... | |
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 1.",
"The magnitude of the magnetic force is greater 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 | 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,... | 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... | |
Select the mammal below. | [
"Amazon tree boa",
"Madagascar day gecko",
"sugar glider",
"woodpecker"
] | 2 | Mammals have hair or fur and feed their young milk.
Mammals are warm-blooded. Warm-blooded animals can control their body temperature.
A human is an example of a mammal. | 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 sugar glider is a mammal. It has fur and feeds its young milk.
Sugar gliders can jump long distances from tree to tree. They have flaps of loose skin on their sides. These flaps help them stay in the air.
A woodpecker is a bird. It has feathers, two wings, and a beak.
Woodpeckers have strong beaks. They use their bea... | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Which animal's skin is better adapted to hurt an attacking predator? | [
"ring-necked pheasant",
"blowfish"
] | 1 | Hedgehogs have sharp spines covering much of their skin. These spines are called quills. The skin of the is adapted to hurt an attacking predator.
Figure: hedgehog. | 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 hedgehog.
The hedgehog has sharp spines on its skin. Its skin is adapted to hurt an attacking predator. The spines can harm a predator that tries to bite the hedgehog.
Now look at each animal. Figure out which animal has a similar adaptation.
The blowfish has sharp spines on its skin. Its ski... | |
Which of these states is farthest west? | [
"Nebraska",
"Nevada",
"Maryland",
"Oklahoma"
] | 1 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Nevada is farthest west. | ||
Not supported with pagination yet | Which correctly shows the title of a book? | [
"\"Z Is for Moose\"",
"***Z Is for Moose***"
] | 1 | closed choice | grade6 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, article, or short story should be in quotation marks.
"You Are My Sunshine" | A book should be in italics.
The correct title is **Z Is for Moose**. | |
Not supported with pagination yet | Which is a complex sentence? | [
"According to many scholars, the 1798 publication of Lyrical Ballads by Samuel Taylor Coleridge and William Wordsworth began the romantic period in English literature.",
"Celine and her mom sat on the back porch and watched as the sun sank into the horizon."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The second sentence is the complex sentence. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction as.
Celine and her mom sat on the back porch and watched as the sun sank into the horizon. | |
Not supported with pagination yet | Using only these supplies, which question can Monica investigate with an experiment? | [
"Does a tablet charge faster with a two-foot-long charging cable or a five-foot-long charging cable?",
"Does a cell phone charge more quickly when it is turned on or when it is turned off?",
"Does a cell phone charge faster when plugged into a wall outlet or into a computer?"
] | 1 | Monica notices that her cell phone charges more quickly sometimes and more slowly other times. She wonders what factors affect how quickly a phone charges. So, she decides to design an experiment. She has the following supplies available:
one cell phone
a two-foot-long charging cable
a five-foot-long charging cable
a s... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
What is the name of the colony shown? | [
"New York",
"Mississippi",
"Connecticut",
"West Virginia"
] | 0 | 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. | |||
Not supported with pagination yet | What do these two changes have in common?
using polish to remove tarnish from a silver spoon
a penny tarnishing | [
"Both are chemical changes.",
"Both are caused by heating.",
"Both are caused by cooling.",
"Both are only physical changes."
] | 0 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
A tarnished silver spoon is one that has become less shiny over time. Polishing the spoon makes it look shiny again.
The polish changes the tarnish into a different type of matter that can be easily wiped away. So, using polish to remove tarnish from silver is a chemical change.
Metal t... | |
Not supported with pagination yet | Is a violin a good or a service? | [
"a good",
"a service"
] | 0 | closed choice | grade2 | social science | economics | Economics | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether a violin is a good or a service, ask these questions:
Is a violin something you can touch? Yes.
Is a violin a job you might pay someone else to do? No.
So, a violin is a good. | |
Not supported with pagination yet | Which tense does the sentence use?
Lester and Carla will help the neighbors. | [
"future tense",
"past tense",
"present tense"
] | 0 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, help. The verb tells you about something that is going to happen. | |
Which property do these three objects have in common? | [
"transparent",
"yellow",
"rough"
] | 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.
You can see clearly through a transparent object. All three objects are transparent.
Yellow is a color.
This color is yellow. None of the objects are yellow.
A rough object feels scratchy when you touch it. None of the objects are rough.
The property... | |
Which animal is also adapted to be camouflaged in a sandy desert? | [
"camel",
"Amazon milk frog"
] | 0 | Fennec foxes live in the Sahara Desert of Africa. The is adapted to be camouflaged in a sandy desert.
Figure: fennec fox. | 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 fennec fox.
The fennec fox has sand-colored fur covering its skin. It is adapted to be camouflaged in a sandy desert. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The camel has sand-colored fur covering its skin. It is adapt... | |
Not supported with pagination yet | Which text message is more formal? | [
"Ms. Baxter is already here. She's waiting in the lobby.",
"Heads up! Baxter is here. In the lobby."
] | 0 | closed choice | grade12 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The first text message is more formal. It uses complete sentences, avoids slang (heads up), and uses the person's title (Ms. Baxter). The other text message includes more casual language and sentence fragments. | |
Which of these states is farthest west? | [
"Washington",
"North Carolina",
"North Dakota",
"Kentucky"
] | 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. Washington is farthest west. | ||
Not supported with pagination yet | How long is a potato? | [
"18 centimeters",
"18 meters"
] | 0 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers?
The number 16 on its own does not give you much informa... | The better estimate for the length of a potato is 18 centimeters.
18 meters is too long. |
Which country is highlighted? | [
"Saint Lucia",
"Saint Vincent and the Grenadines",
"Barbados",
"Grenada"
] | 0 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Lucia. | |||
Not supported with pagination yet | Which logical fallacy is used in the text?
Carrie said there's no way Scotland's Loch Ness Monster is real, but she's not even Scottish, so there's no way she could really know. | [
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against",
"appeal to nature: the assumption that natural things are always good",
"ad hominem: an attack against the person making the argument, rather than the argument itself"
] | 2 | closed choice | grade9 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Carrie's claim that the Loch Ness Monster isn't real is not valid because she's not Scottish. This is a personal attack on Carrie's background that isn't relevant to whether her claim is valid. This illustrates a type of logical fallacy known as ad hominem. | |
Which country is highlighted? | [
"the Federated States of Micronesia",
"Papua New Guinea",
"Palau",
"the Marshall Islands"
] | 0 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | |||
Not supported with pagination yet | Which tense does the sentence use?
In the morning, Mrs. Petersen shoveled the snow. | [
"future tense",
"past tense",
"present tense"
] | 1 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in past tense. You can tell because it uses a past-tense verb, shoveled. The verb ends in -ed and tells you about something that has already happened. | |
Not supported with pagination yet | Compare the motion of three cars. Which car was moving at the lowest speed? | [
"a car that moved 130kilometers west in 5hours",
"a car that moved 485kilometers east in 5hours",
"a car that moved 460kilometers east in 5hours"
] | 0 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each car moved and the time it took to move that distance. The direction each car moved does not affect its speed.
Notice that each car moved for 5 hours. The car that moved 130 kilometers moved the shortest distance in that time. So, that car must have moved at the lowest speed. | |
What is the capital of West Virginia? | [
"Charleston",
"Houston",
"Hartford",
"Dallas"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Charleston is the capital of West Virginia. | |||
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Molasses is not a pure substance. It is made in a factory.",
"Magnetite is a pure substance. It is not made by living things.",
"Hematite is not made by living things. It is a solid."
] | 0 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | 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... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Molasses is made in a factory. But all minerals are formed in nature.
Molasses is not a pure substance. But all minerals are pure substances.
So, molasses is not a mineral.
Magne... | |
Not supported with pagination yet | Using only these supplies, which question can Vicky investigate with an experiment? | [
"Do sunflowers grow bigger in sunny planter boxes or in shady planter boxes?",
"Which type of sunflower grows more leaves?",
"Do sunflowers grow taller if they are planted in planter boxes or in pots?"
] | 0 | Vicky wants to grow sunflowers in her backyard garden. She notices that some sunflowers grow much taller than others. She is curious about what factors affect how sunflowers grow. So, she decides to design an experiment. She has the following supplies available:
seeds from one type of sunflower
soil
one wooden planter ... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Based on this information, what is Kitkat's phenotype for the ear type trait? | [
"straight ears",
"curled ears"
] | 0 | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for curled ears (E) is dominant over the allele for straight ears (e).
Kitkat is an American curl cat from this group. Kitkat has the homozygous g... | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Kitkat's genotype for the ear type gene is ee. Kitkat's genotype of ee has only e alleles. The e allele is for straight ears. So, Kitkat's phenotype for the ear type trait must be straight ears.
To check this answer, consider whether Kitkat's alleles are dominant or recessive. The allele for curled ears (E) is dominant... |
Not supported with pagination yet | Based on this information, what is this fly's phenotype for the wing type trait? | [
"normal wings",
"vestigial wings"
] | 1 | This passage describes the wing type trait in fruit flies:
In a group of fruit flies, some individuals have normal wings and others have vestigial wings. In this group, the gene for the wing type trait has two alleles. The allele for normal wings (N) is dominant over the allele for vestigial wings (n).
A certain fruit... | closed choice | grade8 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | The fruit fly's genotype for the wing type gene is nn. The fruit fly's genotype of nn has only n alleles. The n allele is for vestigial wings. So, the fruit fly's phenotype for the wing type trait must be vestigial wings.
To check this answer, consider whether the fruit fly's alleles are dominant or recessive. The alle... |
Not supported with pagination yet | Which figure of speech is used in this text?
Aaliyah swore she would never go back to Morristown, but I told her she should never say never. The city might be a very different place in ten years. | [
"oxymoron",
"paradox"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a paradox, a statement that might at first appear to be contradictory, but that may in fact contain some truth.
Never say never at first appears to be contradictory: by saying the phrase itself, you have already said never. However, it contains some truth: people often change their minds as they age and s... | |
What is the capital of Utah? | [
"Helena",
"Trenton",
"Provo",
"Salt Lake City"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Salt Lake City is the capital of Utah. | |||
Which property do these three objects have in common? | [
"rough",
"smooth",
"scratchy"
] | 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.
A rough object feels scratchy when you touch it. None of the objects are rough.
A scratchy object is rough and itchy against your skin. None of the objects are scratchy.
A smooth object is not scratchy or rough. All three objects are smooth.
The prop... | |
Which better describes the Sonoran Desert ecosystem? | [
"It has dry, thin soil. It also has many different types of organisms.",
"It has deep, muddy soil. It also has many different types of organisms."
] | 0 | Figure: Sonoran Desert.
The Sonoran Desert is a desert ecosystem in the southwestern United States and northwestern Mexico. | 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 desert is a type of ecosystem. Deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the Sonoran Desert has dry, thin soil. It also has many different types of organisms. | |
Not supported with pagination yet | Complete the sentence.
Snails growing shells is a (). | [
"physical change",
"chemical change"
] | 1 | closed choice | grade5 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form new molecules. The types of molecules in matter before an... | Snails growing shells is a chemical change. A snail's body uses calcium from its food to make a new molecule called calcium carbonate. This calcium carbonate is used to grow the shell. | |
Not supported with pagination yet | Which change better matches the sentence?
An area becomes less wet and less green after years with no rain. | [
"volcanic eruption",
"drought"
] | 1 | closed choice | grade2 | natural science | earth-science | Earth events | Classify changes to Earth's surface | |||
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"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, and the particles in both samples have the same average speed. So, the particles in both samples have the same average kinetic energy.
Because the particles in both samples have the same average kinetic energy, the samples must have the same temperature. | |
Which property do these four objects have in common? | [
"sour",
"rough",
"sweet"
] | 0 | 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 rough object feels scratchy when you touch it. The dill pickles and the green apple are not rough.
A lemon has a sour taste. All four objects are sour.
Sugar has a sweet taste. The dill pickles are not sweet.
The property that all four objects have... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 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 | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Which animal's limbs are also adapted for gliding? | [
"southern flying squirrel",
"three-toed sloth"
] | 0 | Sugar gliders live in the forests of Southeast Asia. They have two arms and two legs. They also have a thin layer of skin, called a patagium, stretched between their arms and legs.
Sugar gliders use the patagium to glide through the air from tree to tree. The 's limbs are adapted for gliding.
Figure: sugar glider. | 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 sugar glider.
The sugar glider can spread its patagium like a wing. This helps it glide through the air from the higher branches of one tree to the lower branches of another tree.
Now look at each animal. Figure out which animal has a similar adaptation.
The southern flying squirrel has a pat... | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Thanks,\nMark",
"thanks,\nMark"
] | 0 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Using only these supplies, which question can Tori investigate with an experiment? | [
"Do round rocks or flat rocks skip more times when thrown across the river?",
"Do rocks skip more times when thrown across a river or across a pond?",
"Do small rocks or large rocks skip more times when thrown across the river?"
] | 2 | Tori likes to skip rocks at the river. She notices that some of the rocks she throws skip off the surface of the water many times, while others skip once and then sink. She wonders what factors affect how well rocks skip on the water. So, she decides to design an experiment. She has the following supplies available:
10... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Which type of sentence is this?
Brianna is a competitive horseback rider, and she will be competing in the next World Equestrian Games, which are held every four years. | [
"compound",
"simple",
"complex",
"compound-complex"
] | 3 | closed choice | grade7 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound-complex. It is made up of two independent clauses and a dependent clause. The dependent clause begins with the relative pronoun which.
Brianna is a competitive horseback rider, and she will be competing in the next World Equestrian Games, which are held every four years. | |
Select the organism in the same species as the bighorn sheep. | [
"Castor fiber",
"Alouatta caraya",
"Ovis canadensis"
] | 2 | This organism is a bighorn sheep. Its scientific name is Ovis canadensis. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A bighorn sheep's scientific name is Ovis canadensis.
Alouatta caraya does not have the same scientific name as a bighorn sheep. So, Ovis canadensis and Alouatta caraya are not in the same species.
Castor fiber does not have the same scientific name as a bighorn sheep. So, Ovis canadensis and Castor fiber are not in th... | |
Not supported with pagination yet | What does the verbal irony in this text suggest?
For spring allergy sufferers, the botanical garden is as pleasant as a traffic jam. | [
"The botanical garden is enjoyable for everyone.",
"The botanical garden is unpleasant for allergy sufferers."
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
As pleasant as a traffic jam suggests that the botanical garden is unpleasant for allergy sufferers. A traffic jam is not pleasant, and neither is a place that causes allergies to flare up. | |
Not supported with pagination yet | Which mug of cocoa has a lower temperature? | [
"the mug of cocoa with less thermal energy",
"the mug of cocoa with more thermal energy"
] | 0 | Two 100-gram mugs of cocoa are identical except for their thermal energies. | closed choice | grade5 | natural science | physics | Heat and thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two mugs of cocoa are made of the same material and have the same mass. So, the mug of cocoa with less thermal energy has a lower temperature. |
What can Dean and Santiago trade to each get what they want? | [
"Santiago can trade his broccoli for Dean's oranges.",
"Santiago can trade his almonds for Dean's tomatoes.",
"Dean can trade his tomatoes for Santiago's carrots.",
"Dean can trade his tomatoes for Santiago's broccoli."
] | 3 | 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.
Dean and Santiago open their lunch boxes in the school cafeteria. Neither Dean nor Santiago got everything that they wanted. The ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Dean wants broccoli. Santiago 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. | ||
Not supported with pagination yet | Which correctly shows the title of a song? | [
"Polly Put the Kettle On",
"\"Polly Put the Kettle On\""
] | 1 | closed choice | grade6 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, article, or short story should be in quotation marks.
"You Are My Sunshine" | A song should be in quotation marks.
The correct title is "Polly Put the Kettle On." | |
Which of the following was an independent variable in this experiment? | [
"the distance the sling was pulled back",
"the distance the ball traveled"
] | 0 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Naomi got a slingshot for her birthday, and she was learning to use it by launching a rubber ball in a local park. Naomi noticed that the ball traveled farther when she pulled the sling back more. She wondered... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | ||
Complete the sentence.
The Motagua Fault formed at a () boundary. | [
"transform",
"convergent",
"divergent"
] | 0 | Read the passage and look at the picture.
The Motagua Fault cuts across Guatemala, marking the boundary between the North American Plate and the Caribbean Plate. The two plates slide past each other along this fault, moving at a rate of about 20 millimeters per year.
In February of 1976, the plates along the Motagua Fa... | closed choice | grade8 | natural science | earth-science | Plate tectonics | Describe tectonic plate boundaries around the world | The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a convergent boundary, two plates are moving toward each other.
At a diverge... | To figure out what type of plate boundary formed the Motagua Fault, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Motagua Fault cuts across Guatemala, marking the boundary between the North American Plate and the Caribbean Plate. The two plates slide past each ot... | |
Which letter marks the Louisiana territory? | [
"A",
"D",
"C",
"B"
] | 2 | In 1803, the United States government bought a large piece of land called the Louisiana territory. This deal, known as the Louisiana Purchase, nearly doubled the size of the country.
The territory of the Louisiana Purchase included most of the land west of the Mississippi River and east of the Rocky Mountains. Look at ... | closed choice | grade7 | social science | us-history | The Early Republic | The Louisiana Purchase | Look at the map.
This choice is correct:
C is west of the Mississippi River and east of the Rocky Mountains.
These choices are not correct:
A is west of the Mississippi River, but also west of the Rocky Mountains.
B is west of the Mississippi River, but also west of the Rocky Mountains.
D is east of the Rocky Mountains... | ||
Not supported with pagination yet | What information supports the conclusion that Jack acquired this trait? | [
"Jack has two pet fish. The fish live in a fish tank together.",
"Jack was not born knowing how to identify different fish. He had to learn this skill."
] | 1 | Read the description of a trait.
Jack is good at identifying fish. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | What kind of sentence is this?
In 1996, Death Valley had forty days with temperatures above 120°F! | [
"interrogative",
"declarative",
"exclamatory"
] | 2 | closed choice | grade6 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence tells about something, but it shows surprise and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | Would you find the word lily on a dictionary page with the following guide words?
lawn - local | [
"no",
"yes"
] | 1 | yes or no | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since lily is between the guide words lawn - local, it would be found on that page. | |
What is the capital of Maine? | [
"Tallahassee",
"Portland",
"Augusta",
"Harrisburg"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | |||
During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each greenhouse",
"each greenhouse . . . the surroundings"
] | 0 | Two identical greenhouses were next to each other. There were solar panels on the roof of one greenhouse but not on the roof of the other greenhouse. This table shows how the temperature of each greenhouse changed over 2hours. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each greenhouse increased, which means that the thermal energy of each greenhouse increased. So, thermal energy was transferred from the surroundings to each greenhouse. | |
What is the capital of Arkansas? | [
"Birmingham",
"Fayetteville",
"Savannah",
"Little Rock"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. | |||
What is the expected ratio of offspring with smooth fruit to offspring with bumpy fruit? Choose the most likely ratio. | [
"3:1",
"1:3",
"4:0",
"0:4",
"2:2"
] | 3 | In a group of cucumber plants, some individuals have bumpy fruit and others have smooth fruit. In this group, the gene for the fruit texture trait has two alleles. The allele for smooth fruit (f) is recessive to the allele for bumpy fruit (F).
This Punnett square shows a cross between two cucumber plants. | 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 smooth fruit or bumpy fruit, consider whether each phenotype is the dominant or recessive allele's version of the fruit texture trait. The question tells you that the f allele, which is for smooth fruit, is recessive to the F allele, which is fo... | |
Not supported with pagination yet | Which online professional profile is more formal? | [
"Resourceful leader with exceptional brand and product development skills",
"Go-getter who will blow you away with new brand and product ideas"
] | 0 | closed choice | grade11 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The first online professional profile is more formal. It uses more elevated language (resourceful leader, exceptional brand and product development skills). The other professional profile uses slang (go-getter, blow you away) and sounds more casual. | |
Not supported with pagination yet | Would you find the word gossip on a dictionary page with the following guide words?
grocery - guest | [
"yes",
"no"
] | 1 | yes or no | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since gossip is not between the guide words grocery - guest, it would not be found on that page. | |
What can Shelley and Katy trade to each get what they want? | [
"Katy can trade her almonds for Shelley's tomatoes.",
"Katy can trade her broccoli for Shelley's oranges.",
"Shelley can trade her tomatoes for Katy's broccoli.",
"Shelley can trade her tomatoes for Katy's carrots."
] | 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.
Shelley and Katy open their lunch boxes in the school cafeteria. Neither Shelley nor Katy got everything that they wanted. The ta... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Shelley wants broccoli. Katy 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. | ||
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. | |
Not supported with pagination yet | Which object has more thermal energy? | [
"a 4-kilogram block of copper at a temperature of 185°F",
"a 4-kilogram block of copper at a temperature of 260°F"
] | 1 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both ... | The two blocks of copper have the same mass but different temperatures. Since the 260°F block is hotter than the 185°F block, it has more thermal energy. |
Not supported with pagination yet | Which type of sentence is this?
An avid reader, Paul attends weekly book club meetings, and he finishes several novels every month. | [
"compound",
"compound-complex",
"complex",
"simple"
] | 0 | closed choice | grade11 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound. It is made up of two independent clauses joined by the coordinating conjunction and.
An avid reader, Paul attends weekly book club meetings, and he finishes several novels every month. | |
Which of these organisms contains matter that was once part of the bilberry? | [
"barren-ground caribou",
"short-tailed weasel",
"lichen",
"bear sedge"
] | 1 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
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 II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the bilberry.There is one path matter can take from the bilberry to the short-tailed weasel: bilberry->brown lemming->short-tailed weasel. lichen. The lichen does not have any arrows po... | |
Not supported with pagination yet | Select the plant. | [
"Moles eat insects and worms.",
"Snowy owls eat small animals.",
"Almond trees can grow many small flowers.",
"Manatees swim underwater."
] | 2 | closed choice | grade3 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | An almond tree is a plant. It can grow many small flowers.
Almonds were first grown by people living near the Mediterranean Sea.
A snowy owl is an animal. It eats small animals.
Snowy owls live in cold places. Snowy owls have feathers on their feet to protect them from the cold.
A mole is an animal. It eats insects and... | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Not supported with pagination yet | Based on this information, what is Bagheera's phenotype for the fur color trait? | [
"white fur",
"ff"
] | 0 | In a group of Bengal tigers, some individuals have orange fur and others have white fur. In this group, the gene for the fur color trait has two alleles. The allele F is for orange fur, and the allele f is for white fur.
Bagheera, a Bengal tiger from this group, has white fur. Bagheera has two alleles for white fur. | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. Bagheera's observable version of the fur color trait is white fur. So, Bagheera's phenotype for the fur color trait is white fur. |
Not supported with pagination yet | Select the animal. | [
"Tulips have a green stem.",
"Manatees swim underwater."
] | 1 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | A tulip is a plant. It has a green stem.
Tulips grow best in cool, dry places.
A manatee is an animal. It swims underwater.
Manatees eat plants that live underwater. | |
Which of these cities is marked on the map? | [
"Washington, D.C.",
"San Antonio",
"Denver",
"Houston"
] | 2 | closed choice | grade5 | social science | geography | Cities | Major U.S. cities | The city is Denver, Colorado. Houston, San Antonio, and Washington, D.C., are marked with gray circles on the map below. | |||
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 | 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 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. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"neither; the samples have the same temperature",
"sample A"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | 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... | |
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... | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"yours truly,\nAllie",
"Yours truly,\nAllie"
] | 1 | closed choice | grade3 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
You think Steve should be class president? I just can't see it. He reads romance novels for fun. | [
"ad hominem: an attack against the person making the argument, rather than the argument itself",
"false causation: the assumption that because two things happened together, one caused the other",
"circular reasoning: an argument that supports a claim with the claim itself"
] | 0 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Steve shouldn't be class president because he reads romance novels for fun. This is a personal attack on Steve that isn't relevant to whether he would be a good class president. This illustrates a type of logical fallacy known as ad hominem. | |
Not supported with pagination yet | Suppose Dalton decides to bake pumpkin muffins. Which result would be a cost? | [
"Dalton will give up some muffins. He could have made more poppy seed muffins than pumpkin muffins.",
"Dalton will get to eat pumpkin muffins. He thinks pumpkin muffins are tastier than poppy seed muffins."
] | 0 | Dalton is deciding whether to bake pumpkin muffins or poppy seed muffins. He wants the muffins to be tasty. But he also wants to make a lot of muffins. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Dalton wants or needs:
Dalton will give up some muffins. He could have made more poppy seed muffins than pumpkin muffins. |
Not supported with pagination yet | What does the allusion in this text suggest?
When Rosanne claimed she had loaded the dishwasher before turning on Dancing with the Stars, her mother replied, "Your nose is growing!" | [
"Rosanne was goofy.",
"Rosanne was lying."
] | 1 | closed choice | grade6 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked. | The text uses an allusion, a brief reference to someone or something well known.
The allusion nose is growing suggests that Rosanne was lying. In the story of Pinocchio, when Pinocchio lies, his nose grows longer. | |
Select the organism in the same genus as the blue jay. | [
"Goura cristata",
"Cyanocitta cristata",
"Lonicera maackii"
] | 1 | This organism is a blue jay. Its scientific name is Cyanocitta cristata. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A blue jay's scientific name is Cyanocitta cristata. The first word of its scientific name is Cyanocitta.
This organism and the blue jay are in the same genus and the same species! Both organisms have the same scientific name, Cyanocitta cristata.
Goura cristata and Cyanocitta cristata are not in the same genus.
These ... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 1.",
"The magnetic force is stronger in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. | |
Not supported with pagination yet | Select the living thing. | [
"tiara",
"loon"
] | 1 | closed choice | grade3 | natural science | biology | Classification | Identify living and nonliving things | All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. Living things use this energy to grow and change. All living things grow and change during their lives.
All living things sense changes in the world around them. Living things might sense ... | A loon is a living thing.
Loons grow and respond to the world around them. They need food and water.
A tiara is not a living thing.
Tiaras do not have all of the traits of living things. They do not grow or respond to the world around them. They do not need food or water. | |
Select the fish below. | [
"zebra",
"piranha"
] | 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 piranha is a fish. It lives underwater. It has fins, not limbs.
A zebra is a mammal. It has hair and feeds its young milk. | |
Not supported with pagination yet | Compare the motion of three speedboats. Which speedboat was moving at the lowest speed? | [
"a speedboat that moved 1,030kilometers west in 10hours",
"a speedboat that moved 1,055kilometers south in 10hours",
"a speedboat that moved 955kilometers north in 10hours"
] | 2 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each speedboat moved and the time it took to move that distance. The direction each speedboat moved does not affect its speed.
Notice that each speedboat moved for 10 hours. The speedboat that moved 955 kilometers moved the shortest distance in that time. So, that speedboat must have moved at the l... | |
What is the capital of New Mexico? | [
"Albuquerque",
"Juneau",
"Cheyenne",
"Santa Fe"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Santa Fe is the capital of New Mexico. | |||
Not supported with pagination yet | What do these two changes have in common?
crushing a mineral into powder
mixing lettuce and salad dressing | [
"Both are only physical changes.",
"Both are caused by heating.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 0 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Crushing a mineral into powder is a physical change. The mineral breaks into tiny pieces. But it is still made of the same type of matter.
Mixing lettuce and salad dressing is a physical change. Together, the salad and dressing make a mixture. But making this mixture does not form a dif... | |
Select the fish below. | [
"great white shark",
"giraffe"
] | 0 | Fish live underwater. They have fins, not limbs. A clownfish is an example of a fish. | 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 giraffe is a mammal. It has hair and feeds its young milk.
Giraffes eat mostly leaves that are too high up for other animals to reach.
A great white shark is a fish. It lives underwater. It has fins, not limbs.
Great white sharks can live for up to 70 years. | |
During this time, thermal energy was transferred from () to (). | [
"each battery . . . the surroundings",
"the surroundings . . . each battery"
] | 0 | Two friends bought phones that cost different amounts but had identical batteries. After using the phones for a while, both friends had to turn them off to let the batteries cool. This table shows how the temperature of each battery changed over 5minutes. | closed choice | grade8 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each battery decreased, which means that the thermal energy of each battery decreased. So, thermal energy was transferred from each battery to the surroundings. | |
Not supported with pagination yet | Which change better matches the sentence?
Flowing water carries away sand and mud. | [
"wildfire",
"erosion"
] | 1 | closed choice | grade2 | natural science | earth-science | Earth events | Classify changes to Earth's surface | |||
Which of these states is farthest north? | [
"South Carolina",
"Tennessee",
"Florida",
"Texas"
] | 1 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Tennessee is farthest north. |
Subsets and Splits
Validation Subject & Topic Summary
Reveals the distribution and count of images across different subjects, topics, and categories, highlighting the most prevalent combinations.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of entries across different topics where images are missing, allowing for a more representative analysis of text-only data.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of text entries across different topics, ensuring that each topic is proportionally represented, which is useful for further analysis or model training.
Random Sample by Topic Ratio
This query balances the dataset by randomly selecting a proportional number of items from each topic to create a balanced subset of 3000 items, revealing how well-represented each topic is in the dataset.
Topic Counts by Grade
Provides a breakdown of the number of questions by topic (physics, chemistry, biology, geography) for each grade level, revealing the distribution of question types.
Validation Category Counts
Counts the number of unique questions per category, helping to understand the distribution of questions across different categories.
SQL Console for derek-thomas/ScienceQA
Identifies categories, questions, and answers that appear more than four times in the validation dataset with images, highlighting common or repetitive entries.
ScienceQA Validation Grouped Data
Provides a count of images and overall occurrences for each combination of subject, topic, category, and answer, helping to identify popular or common configurations.
Train Data with Numeric Choices
This query identifies distinct rows in the dataset where one of the elements in the choices column contains a number and the image column is null, providing insight into data completeness and specific patterns in the choices.
Physics Train with Images and Lectures
Retrieves physics educational records with images and lectures for specific grade levels, providing basic filtering but offering limited analytical insight beyond data availability.
Physics Q&As with Images
Retrieves physics-related training examples with images for specific grade levels, providing basic filtered data but offering limited analytical insight beyond simple categorization.
Physics Questions Gr 2-6 With Images
Retrieves physics-related test items with images for specific grade levels, providing basic filtered data but offering limited analytical insights beyond simple data retrieval.
Filter Text-only Train Questions
Retrieves questions and related metadata from the dataset excluding those with images, offering basic data filtering.
Skills Without Images
Counts the number of skills where the image is missing, providing a basic overview of incomplete data.
Top 10 Hard Text Questions
Retrieves the top 10 longest questions without images, ordered by grade level in descending order, providing basic insight into potentially more complex questions.
SQL Console for derek-thomas/ScienceQA
Counts the occurrences of each category, question, and answer combination where an image is present, providing basic filtering on the dataset.
List ScienceQA Topics
Lists all unique topics in the dataset, which provides a basic overview of the categories present.
Cultural Questions Without Images
Retrieves 100 entries from the 'train' dataset where the image is missing and the topic is 'culture', providing basic filtering with limited analytical value.
Biology Skills for Grades 2 & 3
Lists unique skills and categories for biology topics in grades 2 and 3, providing basic filtering of the dataset.
Biology Qs for Grades 2 &
Retrieves all entries for grade 2 and grade 3 students focusing on the biology topic, providing a basic filtered view of the dataset.
Biology Grade 3 Questions Count
Counts the number of entries for grade 3 students in the biology topic, providing a basic count of data points.
Select Test Rows With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering without deep analytical value.
Test Images Query
This query retrieves a limited sample of rows where the image column is not null, providing basic filtering but minimal analytical value.
Test Data with Images
The query filters out rows where the image column is not null, providing a basic subset of the data but without much analytical insight.
Select Test Entries With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering but no deeper analytical insight.