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Not supported with pagination yet | Complete the statement. Assume that the sled's mass did not change.
The gravitational potential energy stored between the sled and Earth () as Elizabeth rode down the hill. | [
"decreased",
"stayed the same",
"increased"
] | 0 | Read the text about an object in motion.
On a snowy day, Elizabeth rode her sled down a big hill. | closed choice | grade7 | natural science | physics | Kinetic and potential energy | Identify changes in gravitational potential energy | Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth.
The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitati... | Think about how the distance between the sled and the center of Earth changed.
The bottom of the hill was lower than the point where Elizabeth started sledding. As Elizabeth rode toward the bottom of the hill, the distance between the sled and the center of Earth decreased. So, the gravitational potential energy stored... |
Which country is highlighted? | [
"Antigua and Barbuda",
"Dominica",
"Saint Lucia",
"Barbados"
] | 2 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Lucia. | |||
Not supported with pagination yet | What information supports the conclusion that Josie inherited this trait? | [
"Josie's neighbor also has straight hair.",
"Josie's biological mother often wears her straight hair in a ponytail.",
"Josie's biological parents have red hair. Josie also has red hair."
] | 1 | Read the description of a trait.
Josie has straight hair. | closed choice | grade8 | natural science | biology | Genes to traits | 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 from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Not supported with pagination yet | Which object has the least thermal energy? | [
"a 220-gram bottle of water at a temperature of 19°C",
"a 220-gram bottle of water at a temperature of 25°C",
"a 220-gram bottle of water at a temperature of 9°C"
] | 2 | The objects are identical except for their temperatures. | closed choice | grade4 | 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 slow down, the temperature goes down. The matter now has both ... | All three bottles of water have the same mass but different temperatures. Since the 9°C bottle of water is the coldest, it has the least thermal energy. |
Which country is highlighted? | [
"Kiribati",
"Nauru",
"Papua New Guinea",
"Vanuatu"
] | 1 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Nauru. | |||
What is the capital of Maryland? | [
"Annapolis",
"Montpelier",
"Cambridge",
"Dover"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | |||
Not supported with pagination yet | Does this passage describe the weather or the climate?
Lena enjoys the cool evening breezes that are common on summer evenings where she lives. | [
"climate",
"weather"
] | 0 | closed choice | grade5 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | 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 text carefully.
Lena enjoys the cool evening breezes that are common on summer evenings where she lives.
This passage tells you about the usual wind patterns where Lena lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate. | |
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. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is greater in Pair 1 than in Pair 2. | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | 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. | |
In this food chain, the algae is a producer. Why? | [
"It eats a consumer.",
"It eats another organism.",
"It makes its own food."
] | 2 | This diagram shows a food chain from Lake Superior, a freshwater ecosystem on the border of the United States and Canada. | closed choice | grade5 | natural science | biology | Ecosystems | Identify roles in food chains | Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food.
The food chain begins with the producer. A producer can change matter that is not food into food. Many producers use carbon dioxide, water, and sunlight to make sugar. Ca... | In this food chain, the algae is a producer because it makes its own food. The algae uses carbon dioxide, water, and sunlight to make its own food. | |
Not supported with pagination yet | Using only these supplies, which question can Maddie investigate with an experiment? | [
"Do rocks skip more times when thrown across a river or across a pond?",
"Do round rocks or flat rocks skip more times when thrown across the river?",
"Do small rocks or large rocks skip more times when thrown across the river?"
] | 2 | Maddie 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:
... | 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 | Select the one substance that is not a rock. | [
"A nutshell is made by a living thing. It is not a pure substance.",
"Andesite is formed in nature. It is a solid.",
"Shale is formed in nature. It is not made by living things."
] | 0 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify rocks using properties | Rocks are made of minerals. Here are some properties of rocks:
They are solid.
They are formed in nature.
They are not made by living things.
They are not pure substances. | Compare the properties of each substance to the properties of rocks. Select the substance whose properties do not match those of rocks.
Shale is a rock.
Andesite is a rock.
A nutshell is made by a living thing. But rocks are not made by living things.
So, a nutshell is not a rock. | |
What type of rock is gabbro? | [
"sedimentary",
"igneous",
"metamorphic"
] | 1 | This is a piece of gabbro. It formed through the cooling of melted rock below the earth's surface, called magma.
As the magma cooled, mineral grains began to form. Gabbro is made of minerals such as olivine and feldspar. The mineral grains in gabbro are large. This is because the magma cooled slowly. | 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 ... | Gabbro is an igneous rock. Like other igneous rocks, it forms when melted rock cools and hardens.
Melted rock below the earth's surface is called magma. Gabbro forms from a type of magma that is rich in iron and magnesium. As the magma cools, minerals such as olivine and feldspar begin to form. When the magma becomes s... | |
Which of these organisms contains matter that was once part of the bilberry? | [
"bear sedge",
"barren-ground caribou",
"mushroom"
] | 2 | 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 | grade5 | natural science | biology | Ecosystems | 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.
No arrow points to the bear sedge. So, in this food web, matter does not move from the bilberry to the bear sedge.
The only arrow pointing to the barren-ground caribou sta... | |
Not supported with pagination yet | What information supports the conclusion that Steve acquired this trait? | [
"Steve can cook food over a fire.",
"Steve learned how to build a fire at summer camp."
] | 1 | Read the description of a trait.
Steve knows how to build a fire. | closed choice | grade4 | natural science | biology | Traits and 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... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 1 than in Pair 2. So, the magnitud... | |
Which continent is highlighted? | [
"Australia",
"Asia",
"South America",
"North America"
] | 3 | 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 North America. | ||
Not supported with pagination yet | What do these two changes have in common?
water freezing into ice
dry ice sublimating and becoming a gas | [
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are chemical 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.
Water freezing into ice is a change of state. So, it is a physical change. The water changes from solid to liquid. But the ice is still made of the same type of matter as the liquid water.
Dry ice is solid carbon dioxide. When dry ice gets warm, it changes state and becomes carbon dioxi... | |
Not supported with pagination yet | Which type of sentence is this?
Students are unhappy with the new dress code requirements, and they will be discussing their grievances at the next school board meeting. | [
"complex",
"compound-complex",
"compound",
"simple"
] | 2 | closed choice | grade10 | 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.
Students are unhappy with the new dress code requirements, and they will be discussing their grievances at the next school board meeting. | |
Not supported with pagination yet | What information supports the conclusion that Lacey inherited this trait? | [
"Lacey and her mother both wear their hair in braids.",
"Lacey's parents have red hair. They passed down this trait to Lacey."
] | 1 | Read the description of a trait.
Lacey has red hair. | closed choice | grade4 | natural science | biology | Traits and 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 information supports the conclusion that Scarlett acquired this trait? | [
"Scarlett's scar was caused by an accident. She cut her arm when she fell off her bicycle.",
"Scarlett's sister has a bruise from falling on her elbow.",
"Scarlett's scar is on her right elbow. Her father also has a scar on his right elbow."
] | 0 | Read the description of a trait.
Scarlett has a scar on her right elbow. | closed choice | grade8 | natural science | biology | Genes to traits | 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 from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Not supported with pagination yet | Select the solid. | [
"water in a glass",
"handsaw",
"air inside a soccer ball",
"air inside a balloon"
] | 1 | closed choice | grade3 | natural science | physics | States of matter | Identify solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A handsaw is a solid. A solid has a size and shape of its own. The handle of this handsaw is made of wood, and the blade is made of metal. Both wood and metal are solids.
The air inside a soccer ball is a gas. A gas expands to fill a space. The air fills all the space inside the soccer ball. If air leaks out, it will e... | |
Which property do these two objects have in common? | [
"scratchy",
"colorful"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A scratchy object is rough and itchy against your skin. Neither of the objects are scratchy.
A colorful object has one or more bright colors. Both objects are colorful.
The property that both objects have in common is colorful. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 2 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | 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... | |
Not supported with pagination yet | Choose the poem that has a regular rhythm, or a pattern of sound like a beat. | [
"I saw you toss the kites on high\nAnd blow the birds about the sky;\nAnd all around I heard you pass,\nLike ladies' skirts across the grass.",
"You know what it is to be born alone,\nBaby tortoise!\nThe first day to heave your feet little by little\nfrom the shell."
] | 0 | From D. H. Lawrence, "Baby Tortoise" and from Robert Louis Stevenson, "The Wind" | closed choice | grade4 | language science | reading-comprehension | Poetry elements | Identify elements of poetry | Poetry is a special kind of writing. It has many elements that make it different from ordinary writing. Knowing these elements can help you talk about poetry, understand it better, and enjoy it more.
A poem rhymes when it has a pattern of words that end in the same sound.
End rhyme is when the rhymes appear at the end ... | This poem has a regular rhythm, or a pattern of sound like a beat. The parts in bold show the strong syllables. The pattern is a weak syllable followed by a strong syllable. It sounds like da-DUM da-DUM.
Like ladies' skirts across the grass. |
Not supported with pagination yet | The city of Lowell has been one of the world's biggest makers of cough drops for many years. But last month, Lowell's cough drop factories were destroyed by floods. What will probably happen to the overall supply of cough drops? | [
"The supply will probably go up.",
"The supply will probably go down."
] | 1 | closed choice | grade7 | social science | economics | Supply and demand | Understand overall supply and demand | Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
| Resources | Number of producers or suppliers | Expected change in demand
Supply goe... | Floods destroyed the cough drop factories in Lowell. The number of producers of cough drops went down. So, the supply of cough drops will probably go down. | |
Not supported with pagination yet | Which is a sentence fragment? | [
"Cleaned the cabin for Mrs. Kline's family.",
"The bird has a sharp beak."
] | 0 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence, a fragment, or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb.
Knows the answer.
This is a sentence fragment. It is missing a subj... | Cleaned the cabin for Mrs. Kline's family is a sentence fragment. It is missing a subject. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2.",
"The strength of the magnetic force is the same in both pairs."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. | |
Which of the following could Scott's test show? | [
"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",
"if the spacecraft was damaged when using a parachute with a 1 m vent going 200 km per hour"
] | 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... | ||
What is the expected ratio of offspring with a gray body to offspring with a golden body? Choose the most likely ratio. | [
"1:3",
"3:1",
"0:4",
"4:0",
"2:2"
] | 3 | In a group of guppies, some individuals have a gray body and others have a golden body. In this group, the gene for the body color trait has two alleles. The allele for a golden body (b) is recessive to the allele for a gray body (B).
This Punnett square shows a cross between two guppies. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with a gray body or a golden body, consider whether each phenotype is the dominant or recessive allele's version of the body color trait. The question tells you that the b allele, which is for a golden body, is recessive to the B allele, which is for... | |
Not supported with pagination yet | Which figure of speech is used in this text?
At twenty-one, Gordon felt overwhelmed with adult responsibilities and wished he could fly off to Neverland. | [
"onomatopoeia",
"allusion"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses an allusion, a brief reference to someone or something well known.
Neverland alludes to the story of Peter Pan, a boy who lived in Neverland and never grew up. | |
Which continent is highlighted? | [
"South America",
"Asia",
"North America",
"Australia"
] | 2 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is North America. | ||
Which of these states is farthest east? | [
"South Dakota",
"Arkansas",
"Kansas",
"Oregon"
] | 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 east arrow is pointing. Arkansas is farthest east. | ||
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."
] | 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 | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... | |
Not supported with pagination yet | How long does it take to tie your shoes? | [
"20 seconds",
"20 hours"
] | 0 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose units of time | 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 the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to tie your shoes is 20 seconds.
20 hours is too slow. |
Which ocean is highlighted? | [
"the Southern Ocean",
"the Indian Ocean",
"the Pacific Ocean",
"the Arctic Ocean"
] | 1 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Indian Ocean. | ||
Not supported with pagination yet | Why do people form governments? | [
"to get rid of all rules",
"to help keep people safe",
"so that no one has to work"
] | 1 | closed choice | grade3 | social science | civics | Government | Purpose of government | People form governments for two main reasons.
Governments come up with laws, or rules, for a community. Laws help keep people safe. For example, traffic laws make it safer to drive.
Laws can tell people how to work together and settle disagreements. How? Think about a team sport like soccer. The rules tell the players ... | ||
What is the capital of Minnesota? | [
"Minneapolis",
"Des Moines",
"Saint Paul",
"Indianapolis"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | |||
What is the capital of Utah? | [
"Salem",
"Juneau",
"Provo",
"Salt Lake City"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Salt Lake City is the capital of Utah. | |||
Not supported with pagination yet | Which is a compound sentence? | [
"Tomorrow the actors will practice their lines onstage.",
"Our birch tree died, so Mom planted an oak tree in its place."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The second sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction so.
Our birch tree died, so Mom planted an oak tree in its place. | |
Complete the statement.
Cyclooctasulfur is (). | [
"a compound",
"an elementary substance"
] | 1 | The model below represents a molecule of cyclooctasulfur. Cyclooctasulfur is used in the production of rubber bands and automobile tires. | 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 cyclooctasulfur is an elementary substance or a compound.
Step 1: Interpret the model.
In the ball-and-stick model shown above, all of the balls are the same color:
. The legend shows that yellow represents the chemical element with the atomic symbol S. S is the atomic symbol for the ... | |
Not supported with pagination yet | Would you find the word red on a dictionary page with the following guide words?
rank - ripple | [
"yes",
"no"
] | 0 | yes or no | grade4 | 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 red is between the guide words rank - ripple, it would be found on that page. | |
Not supported with pagination yet | Which sentence is more formal? | [
"Spencer Electronics has a reputation for responding quickly to all customer concerns and questions.",
"Spencer Electronics has a reputation for responding real quick to customer concerns and questions."
] | 0 | closed choice | grade6 | language science | writing-strategies | Author's purpose and tone | Which sentence is more formal? | Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing:
Type | Examples
slang | cool, awesome
idioms | knock your socks off
conversational language | gonna, kinda, yeah
abbreviated language | ASAP, FYI
overly simple or imprecise lan... | The second sentence is less formal. You can tell because it uses conversational language (real quick).
The first sentence uses formal language in place of the conversational language, so it is more formal overall. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Many thanks,\nPeter",
"Many Thanks,\nPeter"
] | 0 | closed choice | grade4 | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Which animal's skin is also adapted for survival in cold places? | [
"caribou",
"fantastic leaf-tailed gecko"
] | 0 | 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.
Durin... | |
What type of rock is andesite? | [
"igneous",
"metamorphic"
] | 0 | Andesite is a type of rock. It is commonly found near volcanoes along the coast of the Pacific Ocean. When melted rock cools at the earth's surface, it can form andesite. | 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... | Andesite 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. | |
Not supported with pagination yet | Which correctly shows the title of a song? | [
"\"down by the Bay\"",
"\"Down by the Bay\""
] | 1 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The words by and the are not important, so they should not be capitalized.
The correct title is "Down by the Bay." | |
Not supported with pagination yet | Select the one animal that has all of the fish traits listed above. | [
"European flounders have a flat body and fins. They spend most of their time lying flat on the ocean floor. Both of their eyes are on the top of their head. European flounders have scaly skin and lay eggs with no shells.",
"American tree sparrows have a beak and lay eggs with shells. They have dark feathers on th... | 0 | Fish are a group of animals with similar traits. The following traits can be used to identify fish:
They have fins, not limbs.
They make eggs with no shells. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Fish have the following traits:
They have fins, not limbs.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
An American tree sparrow has the followin... |
Is the following statement about our solar system true or false?
Of the four largest planets, three are made mainly of gas. | [
"true",
"false"
] | 1 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that the four largest planets are Jupiter, Saturn, Uranus, and Neptune. Jupiter and Saturn are made mainly of gas. Uranus and Neptune are made mainly of ice. So, of the four largest planets, two are made mainly of gas. | |
Not supported with pagination yet | Select the living thing. | [
"the Statue of Liberty",
"rain",
"helicopter",
"rosemary bush"
] | 3 | closed choice | grade4 | natural science | biology | Classification | Identify living and nonliving things | All living things are made up of cells. Plants, animals, and some fungi have many cells. Other living things are made up of just one cell.
All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. They use energy from food to grow and change.
All... | A rosemary bush is a living thing.
Rosemary bushes grow and respond to their environment. They need food and water. Rosemary bushes are made up of many cells.
Rosemary bushes are plants. They make their own food using water, carbon dioxide, and energy from sunlight.
The Statue of Liberty is not a living thing.
The Stat... | |
Which of these organisms contains matter that was once part of the persimmon tree? | [
"black bear",
"beaver"
] | 0 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the persimmon tree.There are two paths matter can take from the persimmon tree to the black racer: persimmon tree->pine vole->black racer. persimmon tree->swallowtail caterpillar->pine ... | |
Which air temperature was measured within the outlined area shown? | [
"7°C",
"4°C",
"27°C"
] | 2 | The map below shows air temperatures in the lower atmosphere on September 12, 2013. The outlined area shows an air mass that influenced weather in Australia on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Lab... | closed choice | grade6 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
The legend tells you that this air mass contained air with temperatures between 25°C and 35°C.
27°C is within this range.
4°C and 7°C are outside of this range. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Our competitors use unhealthy sugar substitutes and artificial sweeteners. But Rev-Up Energy Drink contains one hundred percent real cane sugar to fuel your body better. | [
"appeal to nature: the assumption that natural things are always good",
"ad hominem: a personal attack against one's opponent"
] | 0 | closed choice | grade8 | 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 Rev-Up is healthier than other energy drinks. However, even though Rev-Up contains cane sugar instead of artificial sweeteners, that doesn't necessarily mean that it's better for you. This illustrates a type of logical fallacy known as an appeal to nature. | |
Not supported with pagination yet | What kind of sentence is this?
Does Eve prefer pizza or pasta? | [
"interrogative",
"imperative"
] | 0 | closed choice | grade5 | 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. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
Which of the following could Marvin's test show? | [
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"if the sample fabric would absorb one drop of water in less than one second",
"how much athletes would sweat in the fabric"
] | 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... | ||
Not supported with pagination yet | Would you find the word daddy on a dictionary page with the following guide words?
design - disease | [
"no",
"yes"
] | 0 | yes or no | grade2 | 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 daddy is not between the guide words design - disease, it would not be found on that page. | |
Which month is the wettest on average in Cairo? | [
"March",
"January",
"September"
] | 1 | 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 Cairo, look at the graph.
Choice "Jan" is incorrect.
Choice "Mar" is incorrect.
Choice "Sep" is incorrect.
January has an average monthly precipitation of about 15 millimeters. This is higher than in any other month. So, January is the wettest month on average. | |
Which property matches this object? | [
"hard",
"stretchy"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A hard object does not change shape when pressed or squeezed. The wool hat is not hard.
A stretchy object gets longer when you pull on it. The wool hat is stretchy. | |
What is the capital of Vermont? | [
"Burlington",
"Harrisburg",
"Providence",
"Montpelier"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Montpelier is the capital of Vermont. | |||
Not supported with pagination yet | Which logical fallacy is used in the text?
Animals tread softly upon the earth without shoes, so all other living beings should follow suit. | [
"appeal to nature: the assumption that natural things are always good",
"false causation: the assumption that because two things happened together, one caused the other"
] | 0 | closed choice | grade8 | 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 people shouldn't wear shoes, because animals don't wear shoes. However, even though animals don't wear shoes, that doesn't necessarily mean that people shouldn't, either. This illustrates a type of logical fallacy known as an appeal to nature. | |
Which property do these two objects have in common? | [
"bumpy",
"smooth"
] | 0 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A bumpy object is covered in lumps and bumps. Both objects are bumpy.
A smooth object is not scratchy or rough. The rock are not smooth.
The property that both objects have in common is bumpy. | |
Not supported with pagination yet | Based on this information, what is Sandy's phenotype for the tail spots trait? | [
"a spotted tail",
"an unspotted tail"
] | 1 | In a group of guppies, some individuals have a spotted tail and others have an unspotted tail. In this group, the gene for the tail spots trait has two alleles. The allele for a spotted tail (I) is dominant over the allele for an unspotted tail (i).
Sandy is a guppy from this group. Sandy has the homozygous genotype ii... | closed choice | grade7 | 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 ... | Sandy's genotype for the tail spots gene is ii. Sandy's genotype of ii has only i alleles. The i allele is for an unspotted tail. So, Sandy's phenotype for the tail spots trait must be an unspotted tail.
To check this answer, consider whether Sandy's alleles are dominant or recessive. The allele for a spotted tail (I) ... |
Not supported with pagination yet | What information supports the conclusion that Hector inherited this trait? | [
"Hector's mother has blue eyes. She passed this trait down to Hector.",
"Hector likes to wear a blue sweater to match his blue eyes."
] | 0 | Read the description of a trait.
Hector has blue eyes. | 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... | |
Which animal is also adapted to be camouflaged in the snow? | [
"lechwe",
"short-tailed weasel"
] | 1 | Ptarmigans live in cold, snowy places. The is adapted to be camouflaged in the snow.
Figure: ptarmigan. | 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 ptarmigan.
During the winter, the ptarmigan has white feathers covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
During the winter, the short-tailed weasel has white... | |
Not supported with pagination yet | Select the vertebrate. | [
"golden frog",
"Caribbean reef octopus",
"honey bee",
"weaver ant"
] | 0 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A golden frog is an amphibian. Like other amphibians, a golden frog is a vertebrate. It has a backbone.
A weaver ant is an insect. Like other insects, a weaver ant is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other octopuses, a Caribbean reef octopus is an invertebrate. It does not have ... |
Not supported with pagination yet | Select the vertebrate. | [
"trapdoor spider",
"nautilus",
"red-headed poison frog",
"golden orb-weaver"
] | 2 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A nautilus is a mollusk. Like other mollusks, a nautilus is an invertebrate. It does not have a backbone.
Like other spiders, a golden orb-weaver is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other spiders, a trapdoor spider is an invertebrate. It does not have a backbone. It has an exosk... |
Not supported with pagination yet | Which correctly shows the title of a book? | [
"Starry River of the Sky",
"Starry river of the Sky"
] | 0 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The words of and the are not important, so they should not be capitalized.
The correct title is Starry River of the Sky. | |
Complete the sentence.
The word "antebellum" means (). | [
"before the war",
"after the long peace",
"before the feast",
"after the election"
] | 0 | The time period in United States history between 1820 and 1861 is often called the antebellum period. During the antebellum period, the North and South became more divided. In the following questions, you learn more about the changes that happened during the antebellum period.
The following table shows other words that... | closed choice | grade8 | social science | us-history | The Antebellum period | Causes of the Civil War: Missouri Compromise to Bleeding Kansas | Look at the underlined parts of the table.
All the words that use the root "ante" mean to come before something else. So, the root ante means "before."
All the words that use the root "bellum" mean to fight or cause war.So, the root bellum means "war."
So, the word "antebellum" means "before the war." The antebellum pe... | ||
What is the capital of Pennsylvania? | [
"Harrisburg",
"Pittsburgh",
"Philadelphia",
"Trenton"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Harrisburg is the capital of Pennsylvania. | |||
Not supported with pagination yet | Which is scratchier? | [
"wood bat",
"burlap sack"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | Scratchy is a property. A scratchy material is rough and itchy against your skin.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the burlap sack is scratchier. If you touch burlap, it will feel rough and itchy. | |
Which air temperature was measured within the outlined area shown? | [
"8°C",
"-10°C",
"5°C"
] | 1 | The map below shows air temperatures in the lower atmosphere on November 12, 2015. The outlined area shows an air mass that influenced weather in Europe on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Laborat... | closed choice | grade6 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
15°C and 0°C.
-10°C is within this range.
5°C and 8°C are outside of this range. | |
Which of these continents does the prime meridian intersect? | [
"Australia",
"Africa",
"Asia"
] | 1 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Africa. It does not intersect Asia or Australia. | ||
Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 1 | The diagram below is a model of two solutions. Each pink 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 pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Jim plans to travel around Europe with his brother after he graduates.",
"After Jim graduates, he plans to travel around Europe with his brother."
] | 0 | closed choice | grade6 | language science | pronouns | Pronouns and antecedents | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The second answer choice contains a vague pronoun reference. The pronoun he could refer to Jim or his brother.
Jim plans to travel around Europe with his brother after he graduates.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is cl... | |
What can Sean and Jason trade to each get what they want? | [
"Jason can trade his broccoli for Sean's oranges.",
"Sean can trade his tomatoes for Jason's broccoli.",
"Sean can trade his tomatoes for Jason's carrots.",
"Jason can trade his almonds for Sean's tomatoes."
] | 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.
Sean and Jason open their lunch boxes in the school cafeteria. Neither Sean nor Jason got everything that they wanted. The table ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Sean wants broccoli. Jason 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"
] | 1 | 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 south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Select the vertebrate. | [
"bumble bee",
"orb weaver",
"earthworm",
"penguin"
] | 3 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade4 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A penguin is a bird. Like other birds, a penguin is a vertebrate. It has a backbone.
Like other spiders, an orb weaver is an invertebrate. It does not have a backbone. It has an exoskeleton.
An earthworm is a worm. Like other worms, an earthworm is an invertebrate. It does not have a backbone. It has a soft body.
A bum... |
Not supported with pagination yet | Which is a complex sentence? | [
"Because the leaves blocked the intense sun, it was cool underneath the forest canopy.",
"Her dog happily fetched his tennis ball from the muddy puddle and eagerly waited for her to throw it again."
] | 0 | closed choice | grade6 | 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 first 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 because.
Because the leaves blocked the intense sun, it was cool underneath the forest canopy. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Jackson has a scar on his left elbow. | [
"inherited",
"acquired"
] | 1 | Hint: Most scars are caused by accidents during a person's life. | closed choice | grade3 | natural science | biology | Heredity | Identify inherited and acquired traits | 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... | Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait. |
Not supported with pagination yet | Compare the motion of three cars. Which car was moving at the highest speed? | [
"a car that moved 150kilometers south in 5hours",
"a car that moved 330kilometers east in 5hours",
"a car that moved 250kilometers north in 5hours"
] | 1 | 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 330 kilometers moved the farthest distance in that time. So, that car must have moved at the highest speed. | |
Not supported with pagination yet | What do these two changes have in common?
plants making food from sunlight, air, and water
cooking a pancake | [
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by heating.",
"Both are caused by cooling."
] | 1 | 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.
Plants making food is a chemical change. Plants use energy from sunlight to change air and water into food. The food is sugar. Sugar is a different type of matter than air or water.
Cooking a pancake is a chemical change. Pancakes are made from pancake batter. A cooked pancake is a diff... | |
Not supported with pagination yet | Based on this information, what is Jack's genotype for the leg color gene? | [
"ll",
"yellow legs"
] | 0 | In a group of chickens, some individuals have white legs and others have yellow legs. In this group, the gene for the leg color trait has two alleles. The allele L is for white legs, and the allele l is for yellow legs.
Jack, a chicken from this group, has yellow legs. Jack has two alleles for yellow legs. | closed choice | grade7 | 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 genotype for a gene is its combination of alleles for that gene. Jack has two alleles for yellow legs (l). So, Jack's genotype for the leg color gene is ll. |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Mrs. Joyce,",
"Dear Mrs. joyce,"
] | 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 greeting is correct:
Its first word is capitalized, and it ends with a comma. Mrs. Joyce is capitalized because it is a proper noun. | |
Which of the following could Malik's test show? | [
"how well the weather station would work when it was windy",
"if the weather station would work when the temperature was 50°C"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Would you find the word hasten on a dictionary page with the following guide words?
hearth - hiss | [
"no",
"yes"
] | 0 | yes or no | grade4 | 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 hasten is not between the guide words hearth - hiss, it would not be found on that page. | |
During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each salmon",
"each salmon . . . the surroundings"
] | 0 | Elijah lit the charcoal in his grill to cook two identical salmon. He put one fish on the left half of the grill and one fish on the right half of the grill. This table shows how the temperature of each salmon changed over 6minutes. | 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 salmon increased, which means that the thermal energy of each salmon increased. So, thermal energy was transferred from the surroundings to each salmon. | |
What is the name of the colony shown? | [
"Massachusetts",
"Georgia",
"North Carolina",
"South Carolina"
] | 1 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
copper - cure | [
"chair",
"crush"
] | 1 | closed choice | grade8 | 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 crush is between the guide words copper - cure, it would be found on that page. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Haley can drive a car. | [
"acquired",
"inherited"
] | 0 | Hint: Driving well takes practice. | closed choice | grade3 | natural science | biology | Heredity | Identify inherited and acquired traits | 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... | Humans are not born knowing how to drive a car. Instead, many people learn how to drive when they are older. So, driving is an acquired trait. |
Not supported with pagination yet | Using only these supplies, which question can Zoe investigate with an experiment? | [
"Does a rubber inner tube sled go faster down a small hill or down a big hill?",
"Does a plastic sled or a wooden sled go down a hill faster?",
"Does a rubber inner tube sled or a plastic sled go faster down a hill?"
] | 2 | Zoe is sledding with her friends. She notices that some of them go faster down the sledding hill. She wonders what factors affect sledding speed. So, she decides to design an experiment. She has the following supplies available:
access to a small snow-covered hill at the park
a small plastic sled
a large plastic sled
a... | 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... | |
Which animal's limbs are also adapted for gliding? | [
"three-toed sloth",
"Russian flying squirrel"
] | 1 | 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 Russian flying squirrel has a pata... | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"The Hardings make delicious pies; Julia was delighted to find them at the farmers' market.",
"Julia was delighted to find the Hardings' delicious pies at the farmers' market."
] | 0 | closed choice | grade11 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The second answer choice contains a vague pronoun reference. The pronoun them could refer to the Hardings or delicious pies.
The Hardings make delicious pies; Julia was delighted to find them at the farmers' market.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been r... | |
Not supported with pagination yet | Is this a run-on sentence?
Coconut crabs are the largest terrestrial arthropods on the planet they can weigh up to nine pounds and grow to be up to three feet across. | [
"yes",
"no"
] | 0 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify run-on sentences | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A run-on sentence is formed when two sentences are run together, joined by just a comma or by no punctuation at all. If only a comma is used, the run-on is called a comma s... | This is a run-on sentence. It is formed from two sentences run together, joined without punctuation.
Coconut crabs are the largest terrestrial arthropods on the planet they can weigh up to nine pounds and grow to be up to three feet across.
Here is one way to fix the run-on sentence:
Coconut crabs are the largest terre... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
The swordsman achieved a Pyrrhic victory. | [
"Greek history",
"a fairy tale"
] | 0 | closed choice | grade9 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion Pyrrhic victory is Greek history.
Pyrrhus was an ancient Greek king who won a battle but suffered very heavy losses.
The allusion Pyrrhic victory means a success that comes at a huge cost. | |
Not supported with pagination yet | What does the metaphor in this text suggest?
When Jaden lost his job, he was devastated. The only light in the sea of darkness was the prospect of pursuing a new career. | [
"There was a benefit to Jaden's job loss.",
"Jaden felt in the dark about what to do after losing his job."
] | 0 | 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.
A metaphor compares two things that are not actually alike without using like or as.
The snow formed a blanket over the town. | The text uses a metaphor, comparing two things that are not actually alike without using like or as.
The metaphor the only light in the sea of darkness was the prospect of pursuing a new career suggests that there was a benefit to Jaden's job loss. A light would be beneficial in helping someone escape a dark, difficult... | |
Which month has the lowest average temperature in Amsterdam? | [
"November",
"February",
"December"
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used t... | To describe the average temperature trends in Amsterdam, look at the graph.
Choice "Feb" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
The average temperature in February is around 2°C. This is the lowest average temperature of all of the months. | |
What can Sarah and Carla trade to each get what they want? | [
"Sarah can trade her tomatoes for Carla's carrots.",
"Carla can trade her broccoli for Sarah's oranges.",
"Sarah can trade her tomatoes for Carla's broccoli.",
"Carla can trade her almonds for Sarah'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.
Sarah and Carla open their lunch boxes in the school cafeteria. Neither Sarah nor Carla got everything that they wanted. The tabl... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Sarah wants broccoli. Carla 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 figure of speech is used in this text?
Natalie's phone slipped out of her pocket, landing in the toilet with a plop. | [
"idiom",
"onomatopoeia"
] | 1 | closed choice | grade7 | language science | figurative-language | Literary devices | Classify 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.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses onomatopoeia, a word that expresses a sound.
Plop represents the sound of the phone landing in the toilet. | |
Which country is highlighted? | [
"Australia",
"Papua New Guinea",
"New Zealand",
"Solomon Islands"
] | 0 | closed choice | grade7 | 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. | |||
Not supported with pagination yet | Which text uses the word nauseous in its traditional sense? | [
"Everyone seemed to enjoy the magnolia-scented candle, but it made Oscar feel rather nauseous.",
"Everyone seemed to enjoy the magnolia-scented candle, but Oscar found the smell rather nauseous."
] | 1 | closed choice | grade9 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses nauseous in its traditional sense: causing disgust or nausea.
Everyone seemed to enjoy the magnolia-scented candle, but Oscar found the smell rather nauseous.
The second text uses nauseous in its nontraditional sense: feeling disgusted or nauseated.
Everyone seemed to enjoy the magnolia-scented cand... |
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.