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Not supported with pagination yet | What is the volume of a coffee pot? | [
"10 cups",
"10 gallons",
"10 fluid ounces"
] | 0 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups,... | The best estimate for the volume of a coffee pot is 10 cups.
10 fluid ounces is too little and 10 gallons is too much. |
An international organization is made up of members from () who (). | [
"different countries . . . declare war on other countries",
"different countries . . . work together for a shared purpose",
"the same country . . . work together for a shared purpose",
"the same country . . . declare war on other countries"
] | 1 | Look at the phrase "international organization." Then complete the text below.
Use the information above to complete the sentence. | closed choice | grade6 | social science | global-studies | Government | International organizations | The word international describes something involving more than one country. An organization is a group with a purpose. So, an international organization is made up of members from different countries who work together to achieve a shared purpose. | ||
Not supported with pagination yet | Select the animal. | [
"Raspberry bushes have green leaves.",
"Howler monkeys eat leaves, fruit, and nuts."
] | 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 howler monkey is an animal. It eats leaves, fruit, and nuts.
A howler monkey's tail can be longer than the rest of its body!
A raspberry bush is a plant. It has green leaves.
Most raspberries are red. But raspberries can also be purple or yellow. | |
In this experiment, which were part of an experimental group? | [
"the salted ice cubes",
"the unsalted ice cubes"
] | 0 | The passage below describes an experiment.
After a severe winter storm, Chase's driveway was covered with ice. He read that salt makes ice melt at a lower temperature. Before covering his entire driveway with salt, he wanted to know if adding salt could actually help melt ice in the freezing outdoor temperatures.
Chas... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Chase investigated whether adding salt to ice cubes affects how quickly they melt. So, the salted ice cubes were part of an experimental group.
The unsalted ice cubes did not get salt. So, they were not part of an experimental group. | |
Not supported with pagination yet | What does the metaphor in this text suggest?
Karen felt a roller coaster of emotions when she heard the news. | [
"Karen had varied feelings.",
"Karen found the news scary."
] | 0 | closed choice | grade9 | 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 Karen felt a roller coaster of emotions suggests that Karen had varied feelings. A roller coaster has a dramatic mix of ups and downs, and so do Karen's feelings. | |
Select the mammal below. | [
"piranha",
"gorilla"
] | 1 | Mammals have hair or fur and feed their young milk. A gray wolf is an example of a mammal. | 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 gorilla is a mammal. It has fur and feeds its young milk.
Gorillas live in groups called troops. The largest male in the troop is usually the leader.
A piranha is a fish. It lives underwater. It has fins, not limbs.
Piranhas have sharp teeth. Piranhas hunt in groups. A group of piranhas can eat a large animal. | |
Not supported with pagination yet | Which correctly shows the title of a short story? | [
"\"To Build a Fire\"",
"To Build a Fire"
] | 0 | closed choice | grade9 | 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 short story should be in quotation marks.
The correct title is "To Build a Fire." | |
What is the capital of Virginia? | [
"Richmond",
"Baton Rouge",
"Buffalo",
"Norfolk"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | |||
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 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 north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
This news story must be accurate. It's been shared online over a million times! | [
"false causation: the assumption that because two things happened together, one caused the other",
"bandwagon fallacy: the assumption that the popular choice is automatically correct",
"false dichotomy: an argument that presents only two choices when more options exist"
] | 1 | closed choice | grade10 | 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 a news story is accurate because it has been shared many times. However, this is not necessarily true. A story may be shared for reasons besides its accuracy. This illustrates a type of logical fallacy known as the bandwagon fallacy. | |
Not supported with pagination yet | Guitar makers use a special kind of wood to build their instruments. But the trees that produce that kind of wood are running out. Over time, what will probably happen to the overall supply of new guitars? | [
"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... | Wood is a resource that is used to make guitars. The trees that produce wood for guitars are running out, so this kind of wood will be harder to get. Since this kind of wood is becoming harder to get, it will be harder to make new guitars. So, over time, the supply of new guitars will probably go down. | |
Not supported with pagination yet | Which glas of apple juice has a lower temperature? | [
"the glass of apple juice with less thermal energy",
"the glass of apple juice with more thermal energy"
] | 0 | Two 250-gram glasses of apple juice are identical except for their thermal energies. | closed choice | grade6 | natural science | physics | 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 glasses of apple juice are made of the same material and have the same mass. So, the glass of apple juice with less thermal energy has a lower temperature. |
Not supported with pagination yet | What information supports the conclusion that Isaac inherited this trait? | [
"Isaac and his father both have short hair.",
"Isaac's parents were born with straight hair. They passed down this trait to Isaac."
] | 1 | Read the description of a trait.
Isaac has straight hair. | closed choice | grade6 | 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.... | |
Which of these oceans does the prime meridian intersect? | [
"the Atlantic Ocean",
"the Indian Ocean",
"the Pacific Ocean"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | ||
Not supported with pagination yet | What kind of sentence is this?
Bryan has never tried chocolate ice cream before, which I find astounding! | [
"exclamatory",
"declarative",
"interrogative"
] | 0 | closed choice | grade7 | 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. | |
Which ocean is highlighted? | [
"the Arctic Ocean",
"the Southern Ocean",
"the Indian Ocean",
"the Pacific Ocean"
] | 1 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude. | ||
Not supported with pagination yet | Which figure of speech is used in this text?
The Norwood Grill offers a delicious vegetarian sausage entr̩e served with mashed sweet potatoes and arugula salad. | [
"oxymoron",
"hyperbole"
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure 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 an oxymoron, a joining of two seemingly contradictory terms.
Vegetarian sausage is a contradiction, because vegetarian food has no meat, and sausages are made with meat. | |
Not supported with pagination yet | Would you find the word knee on a dictionary page with the following guide words?
kettle - kitten | [
"no",
"yes"
] | 0 | yes or no | grade3 | 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 knee is not between the guide words kettle - kitten, it would not be found on that page. | |
Not supported with pagination yet | Which sentence uses a simile? | [
"Larry's eyes are as green as emeralds.",
"Larry's eyes are bright green emeralds."
] | 0 | closed choice | grade5 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a simile:
Larry's eyes are as green as emeralds.
The words eyes and emeralds are compared using the word as.
This sentence uses a metaphor:
Larry's eyes are bright green emeralds.
The words eyes and emeralds are compared without the word like or as. | |
Not supported with pagination yet | Compare the motion of two mountain bikers. Which mountain biker was moving at a lower speed? | [
"a mountain biker who moved 175kilometers in 5hours",
"a mountain biker who moved 85kilometers in 5hours"
] | 1 | closed choice | grade2 | 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 two objects... | Look at the distance each mountain biker moved and the time it took to move that distance.
One mountain biker moved 85 kilometers in 5 hours.
The other mountain biker moved 175 kilometers in 5 hours.
Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 85 kilometers moved a... | |
What can Marshall and Nina trade to each get what they want? | [
"Marshall can trade his tomatoes for Nina's broccoli.",
"Nina can trade her almonds for Marshall's tomatoes.",
"Marshall can trade his tomatoes for Nina's carrots.",
"Nina can trade her broccoli for Marshall's oranges."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Marshall and Nina open their lunch boxes in the school cafeteria. Neither Marshall nor Nina got everything that they wanted. The ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Marshall wants broccoli. Nina 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. | ||
What is the capital of Minnesota? | [
"Frankfort",
"Jefferson City",
"Minneapolis",
"Saint Paul"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Saint Paul is the capital of Minnesota. | |||
Not supported with pagination yet | What information supports the conclusion that Andrew inherited this trait? | [
"Andrew and his father both have dark hair.",
"Andrew's parents have pale skin. They passed down this trait to Andrew."
] | 1 | Read the description of a trait.
Andrew has pale skin. | closed choice | grade5 | 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 | Which figure of speech is used in this text?
The Hillsdale Grill offers a delicious vegetarian sausage entr̩e served with mashed sweet potatoes and arugula salad. | [
"euphemism",
"oxymoron"
] | 1 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure 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 an oxymoron, a joining of two seemingly contradictory terms.
Vegetarian sausage is a contradiction, because vegetarian food has no meat, and sausages are made with meat. | |
Not supported with pagination yet | Select the one true statement. | [
"In a plant cell, the endoplasmic reticulum contains the master plan for cell activities and cell development.",
"Chloroplasts break down sugar to release energy that a plant cell can use.",
"The cell wall is outside the cell membrane of a plant cell."
] | 2 | closed choice | grade7 | natural science | biology | Cells | Compare cells and cell parts | |||
Not supported with pagination yet | Based on this information, what is this plant's phenotype for the flower form trait? | [
"double flowers",
"single flowers"
] | 0 | This passage describes the flower form trait in rose plants:
In a group of rose plants, some individuals have double flowers and others have single flowers. In this group, the gene for the flower form trait has two alleles. The allele for double flowers (F) is dominant over the allele for single flowers (f).
A certain... | 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 rose plant's genotype for the flower form gene is FF. The rose plant's genotype of FF has only F allelles. The F allele is for double flowers. So, the rose plant's phenotype for the flower form trait must be double flowers.
To check this answer, consider whether the rose plant's alleles are dominant or recessive. T... |
Not supported with pagination yet | Select the living thing. | [
"pushpin",
"stop sign",
"boulder",
"barnacle"
] | 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 pushpin is not a living thing.
Pushpins do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.
A boulder is not a living thing.
Boulders do not have all of the traits of living things. They do not grow or respond to their environment. They do ... | |
Not supported with pagination yet | What kind of sentence is this?
Have you ever typed on a typewriter? | [
"imperative",
"interrogative"
] | 1 | closed choice | grade4 | 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. | |
Is a tent a solid or a liquid? | [
"a liquid",
"a solid"
] | 1 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a li... | A tent is a solid. You can fold a tent or spread it out. But it will still have a size and shape of its own. | ||
Which property matches this object? | [
"yellow",
"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 rain boots are not rough.
Yellow is a color.
This color is yellow. The rain boots are yellow. | |
What is the capital of Maine? | [
"Boston",
"Augusta",
"Indianapolis",
"Topeka"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | |||
Not supported with pagination yet | What do these two changes have in common?
melting glass
grilling a hamburger | [
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are caused by heating."
] | 3 | closed choice | grade7 | 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.
Melting glass is a change of state. So, it is a physical change. The glass changes from solid to liquid. But a different type of matter is not formed.
Grilling a hamburger is a chemical change. Heat from the grill causes the matter in the meat to change. Cooked meat and raw meat are dif... | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Rap is the best musical genre because it is better than all other types of music. | [
"false causation: the assumption that because two things happened together, one caused the other",
"hasty generalization: a broad claim based on too few observations",
"circular reasoning: an argument that supports a claim with the claim itself"
] | 2 | closed choice | grade10 | 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 rap is the best music because it's better than all other music. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"When Emily was researching the lives of famous scientists, it said that Albert Einstein had a speech impediment when he was a child.",
"When Emily was researching the lives of famous scientists, one source said that Albert Einstein had a speech impediment when he was a child."
] | 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 it is used without its antecedent.
The first answer choice shows a possible correction for the vague pronoun reference. It has been replaced with one source.
When Emily was researching the lives of famous scientists, one source said that Albert Ei... | |
Not supported with pagination yet | What is the mass of an apple? | [
"90 kilograms",
"90 grams"
] | 1 | Select the better estimate. | closed choice | grade5 | 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 an apple is 90 grams.
90 kilograms is too heavy. |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
dessert - drift | [
"dip",
"dug"
] | 0 | closed choice | 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 dip is between the guide words dessert - drift, it would be found on that page. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"your friend,\nJason",
"Your friend,\nJason"
] | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Select the one animal that has all of the mammal traits listed above. | [
"Red salamanders do not have lungs! They can breathe through their moist, smooth skin. Adult red salamanders live near rivers or ponds. They lay eggs with no shells under rocks or logs. The baby red salamanders live underwater.",
"Female cats feed their offspring milk. Adult cats have fur and hunt small animals f... | 1 | Mammals are a group of animals with similar traits. The following traits can be used to identify mammals:
They feed their offspring milk.
They have fur or hair. Observe the animals and read the descriptions. | closed choice | grade4 | 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.
Mammals have the following traits:
They feed their offspring milk.
They have fur or hair.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A red salamander has the following traits... |
Is the following statement about our solar system true or false?
Jupiter's volume is more than 1,000 times as great as Earth's volume. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade7 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | To determine if this statement is true, calculate the value of 1,000 times the volume of Earth.
Then compare the result to the volume of Jupiter. Jupiter's volume is 1,431,280 billion km^3, which is more than 1,090,000 billion km^3. So, Jupiter's volume is more than 1,000 times as great as Earth's volume. | |
Not supported with pagination yet | What is the mass of an apple? | [
"95 kilograms",
"95 grams"
] | 1 | 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 an apple is 95 grams.
95 kilograms is too heavy. |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Thanks,\nDoug",
"thanks,\nDoug"
] | 0 | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Which of the following is a primary function of carbohydrates? | [
"to store the information needed for an organism's growth and development",
"to form the rigid cell wall in a plant cell",
"to control chemical reactions"
] | 1 | Life on Earth comes in many forms, from microscopic bacteria to giant redwood trees. Despite their differences, all living things are made up of the same types of molecules. Many of these molecules contain carbon and are called organic compounds.
There are four main groups of organic compounds found in cells. One of th... | closed choice | grade7 | natural science | biology | Biochemistry | Structure and function: carbohydrates, lipids, proteins, and nucleic acids | Living things are made up of four main groups of carbon-based molecules called organic compounds. One of these groups is carbohydrates. The other three groups are lipids, proteins, and nucleic acids.
All carbohydrates are made up of the same three chemical elements: carbon, hydrogen, and oxygen. But carbohydrate molecu... | |
Not supported with pagination yet | Using only these supplies, which question can Elena investigate with an experiment? | [
"Do small rocks or large rocks skip more times when thrown across the river?",
"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?"
] | 0 | Elena 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:
1... | 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... | |
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 2.",
"The magnetic force is stronger in Pair 1.",
"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 2 are closer together than the magnets in Pair 1. So, the magnetic force is stronger in Pair 2 than in Pair 1. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Your Nephew,\nCarter",
"Your nephew,\nCarter"
] | 1 | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Is the following statement about our solar system true or false?
50% of the planets 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 two out of the eight planets are made mainly of gas. So, one-fourth, or 25%, of the planets are made mainly of gas. | |
Not supported with pagination yet | Select the bird. | [
"gray tree frog",
"Surinam horned frog",
"turkey vulture",
"green moray eel"
] | 2 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds have feathers, two wings, and a beak. | A green moray eel is a fish. It lives underwater. It has fins, not limbs.
Eels are long and thin. They may have small fins. They look like snakes, but they are fish!
A Surinam horned frog is an amphibian. It has moist skin and begins its life in water.
Frogs live near water or in damp places. Most frogs lay their eggs ... | |
What evidence of a volcanic eruption does this picture show? | [
"Part of the sky is clear.",
"A red liquid is coming out of the ground."
] | 1 | This picture was taken during a volcanic eruption. A volcanic eruption happens when melted rock comes out from under the ground. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | ||
Not supported with pagination yet | Which tense does the sentence use?
Scientists will measure the rainfall in Ashland. | [
"past tense",
"future tense",
"present tense"
] | 1 | closed choice | grade4 | 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, measure. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Using only these supplies, which question can Paula investigate with an experiment? | [
"Do candles with thick wicks or with thin wicks produce more smoke?",
"Do large candles or small candles produce more smoke?",
"Do scented candles or unscented candles produce more smoke?"
] | 0 | Paula is burning some new candles. She notices that they produce different amounts of smoke. She wonders what factors affect how much smoke a candle produces. So, she decides to design an experiment. She has the following supplies available:
two large unscented candles with thick wicks
two large unscented candles with ... | 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... | |
Which property do these four objects have in common? | [
"salty",
"translucent",
"fuzzy"
] | 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.
Potato chips have a salty taste. All four objects are salty.
A fuzzy object is covered in soft hair. The cracker is not fuzzy.
A translucent object lets light through. But you cannot see clearly through a translucent object. The ocean water is transl... | |
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"a clique",
"a club"
] | 0 | closed choice | grade6 | language science | vocabulary | Shades of meaning | Positive and negative connotation | Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations.
For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations.
Eager has a positive connotation. It is a n... | A clique has a more negative connotation. Clique and club both denote a group. However, clique suggests that the group excludes or is unfriendly to others, while club suggests that the group is organized around shared interests. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Sophie can fly an airplane. | [
"acquired",
"inherited"
] | 0 | Hint: Pilots have to learn how to fly an airplane. | closed choice | grade4 | natural science | biology | Traits and 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... | People are not born knowing how to fly an airplane. Instead, some people learn how to fly airplanes. So, flying an airplane is an acquired trait. |
Not supported with pagination yet | What do these two changes have in common?
baking an apple pie
burning a piece of wood | [
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are chemical changes."
] | 2 | closed choice | grade3 | 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.
Baking an apple pie is a chemical change. The type of matter in the pie changes. The apples become soft, and the crust turns brown.
Burning a piece of wood is a chemical change. When the wood burns, the type of matter in it changes. The wood turns black and gives off smoke.
Step 2: Look... | |
Not supported with pagination yet | Using only these supplies, which question can Monica investigate with an experiment? | [
"Does dark chocolate or white chocolate melt faster when heated on the stove?",
"Does milk chocolate melt faster when heated in a microwave or on a stove?",
"Does milk chocolate or dark chocolate melt faster when heated on the stove?"
] | 2 | Monica leaves some chocolates in her jacket pocket. When she finds the chocolates later, she notices that some of them have melted. She wonders what factors affect how quickly chocolate melts. So, she decides to design an experiment. She has the following supplies available:
one bar of milk chocolate
one bar of dark ch... | closed choice | grade7 | 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 country is highlighted? | [
"New Zealand",
"Fiji",
"Tuvalu",
"Tonga"
] | 2 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | |||
Not supported with pagination yet | Based on this information, what is Roy's phenotype for the Marfan syndrome trait? | [
"having Marfan syndrome",
"not having Marfan syndrome"
] | 1 | This passage describes the Marfan syndrome trait in humans:
In a group of humans, some individuals have Marfan syndrome and others do not. In this group, the gene for the Marfan syndrome trait has two alleles. The allele for having Marfan syndrome (M) is dominant over the allele for not having Marfan syndrome (m).
Roy... | 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 ... | Roy's genotype for the Marfan syndrome gene is mm. Roy's genotype of mm has only m alleles. The m allele is for not having Marfan syndrome. So, Roy's phenotype for the Marfan syndrome trait must be not having Marfan syndrome.
To check this answer, consider whether Roy's alleles are dominant or recessive. The allele for... |
Not supported with pagination yet | Using only these supplies, which question can Colette investigate with an experiment? | [
"When placed in the sun, will eight ounces of water in a closed jar or eight ounces of water in an open jar get warmer?",
"Will eight ounces of carbonated water or eight ounces of tap water get warmer when placed in a jar in the sun?",
"When placed in the sun, will eight ounces of water in a glass jar or eight ... | 0 | Colette leaves a glass jar of cold tea outside in full sunlight. When she goes to get it, she notices that the tea is warm. She wonders what factors affect how warm a liquid gets from sitting in the sunlight. So, she decides to design an experiment. She has the following supplies available:
two identical glass jars
two... | closed choice | grade7 | 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 object has the most thermal energy? | [
"a plate of spaghetti at a temperature of 52°C",
"a plate of spaghetti at a temperature of 35°C",
"a plate of spaghetti at a temperature of 49°C"
] | 0 | 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 move faster, the temperature goes up. The matter now has both ... | All three plates of spaghetti have the same mass but different temperatures. Since the 52°C plate of spaghetti is the hottest, it has the most thermal energy. |
Not supported with pagination yet | Does this passage describe the weather or the climate?
While at the park today, Sam noticed that the wind was coming from the southwest. | [
"climate",
"weather"
] | 1 | Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade4 | natural science | earth-science | Weather and climate | 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.
While at the park today, Sam noticed that the wind was coming from the southwest.
This passage tells you about the wind direction at the park today. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Not supported with pagination yet | What do these two changes have in common?
shaking up salad dressing
ice melting in a glass | [
"Both are caused by cooling.",
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by heating."
] | 2 | closed choice | grade3 | 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.
Shaking up salad dressing is a physical change. The different parts mix together, but they are still made of the same type of matter.
Ice melting in a glass is a change of state. So, it is a physical change. The solid ice becomes liquid, but it is still made of water. A different type o... | |
Not supported with pagination yet | What do these two changes have in common?
baking an apple pie
a sidewalk heating up in the sun | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are chemical changes."
] | 0 | closed choice | grade3 | 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.
Baking an apple pie is a chemical change. The type of matter in the pie changes. The apples become soft, and the crust turns brown.
A sidewalk heating up in the sun is a physical change. The temperature of the sidewalk goes up, but the sidewalk is still made of the same type of matter.
... | |
What is the capital of Alaska? | [
"Juneau",
"Concord",
"Honolulu",
"Jackson"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | |||
Not supported with pagination yet | What is the mass of a full box of cereal? | [
"495 grams",
"495 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 495 grams.
495 kilograms is too heavy. |
In this food chain, the mayfly is a primary consumer. Why? | [
"It eats a tertiary consumer.",
"It eats a producer.",
"It makes its own food."
] | 1 | 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 mayfly is a primary consumer because it eats a producer. The producer in this food chain is the algae. | |
Not supported with pagination yet | Compare the motion of three ships. Which ship was moving at the lowest speed? | [
"a ship that moved 145kilometers west in 10hours",
"a ship that moved 340kilometers west in 10hours",
"a ship that moved 330kilometers east in 10hours"
] | 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 ship moved and the time it took to move that distance. The direction each ship moved does not affect its speed.
Notice that each ship moved for 10 hours. The ship that moved 145 kilometers moved the shortest distance in that time. So, that ship must have moved at the lowest speed. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"According to Beth, Willie Mays hit 660 career home runs, although Joe DiMaggio had a higher batting average. She said that he is her favorite player.",
"According to Beth, Willie Mays hit 660 career home runs, although Joe DiMaggio had a higher batting average. She said that Mays is her favorite player."
] | 0 | closed choice | grade10 | 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 he could refer to Joe Di Maggio or Willie Mays.
The first answer choice shows a possible correction for the vague pronoun reference. He has been replaced with Mays.
According to Beth, Willie Mays hit 660 career home runs, although Joe DiMaggio had... | |
Not supported with pagination yet | Complete the sentence.
Sanding a piece of wood is a (). | [
"chemical change",
"physical 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... | Sanding a piece of wood is a physical change. The wood becomes smoother, but it is still made of the same type of matter. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Mitch plays baseball. | [
"acquired",
"inherited"
] | 0 | Hint: Playing baseball 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... | People are not born knowing how to play baseball. Instead, some people learn how to play baseball. Playing the sport takes practice. So, playing baseball is an acquired trait. |
Not supported with pagination yet | Based on this information, what is Jinx's phenotype for the fur type trait? | [
"straight fur",
"curly fur"
] | 0 | In a group of cats, some individuals have straight fur and others have curly fur. In this group, the gene for the fur type trait has two alleles. The allele for straight fur (F) is dominant over the allele for curly fur (f).
Jinx is a cat from this group. Jinx has the heterozygous genotype Ff for the fur type gene. | 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 ... | You need to determine Jinx's phenotype for the fur type trait. First, consider the alleles in Jinx's genotype for the fur type gene. Then, decide whether these alleles are dominant or recessive.
The allele for straight fur (F) is dominant over the allele for curly fur (f). This means F is a dominant allele, and f is a ... |
Not supported with pagination yet | Is this a sentence fragment?
The number of tornadoes recorded in the United States over the past few decades. | [
"yes",
"no"
] | 0 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify sentence fragments | 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 sentence fragment is a group of words that does not express a complete thought.
Rehearsing daily because we have a concert in two weeks.
This fragment is missing a subjec... | This is a sentence fragment. It does not express a complete thought.
The number of tornadoes recorded in the United States over the past few decades.
Here is one way to fix the sentence fragment:
The number of tornadoes recorded in the United States over the past few decades has not increased. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"yours truly,\nBill",
"Yours truly,\nBill"
] | 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. | |
Select the true statement. | [
"Molecules from food can provide energy.",
"Animals need food, but plants don't."
] | 0 | Plants, animals, and all other organisms need energy from food to live and grow.
How do organisms get energy from food? Inside an organism's cells, food molecules are broken down and rearranged through chemical reactions. The reactions release chemical energy that the cells can use to power growth and other important ... | closed choice | grade6 | natural science | biology | Photosynthesis | How do plants use and change energy? | Molecules from food can provide energy.
Animals need food, but plants don't.
All organisms need energy from food. Some organisms, including most plants, make their own food.
Chemical energy can be used for cell growth.
Cells can use chemical energy to power many important cell processes, including growth. | ||
Not supported with pagination yet | Which sentence is more formal? | [
"Alice Harmon is an excellent reporter, so it came as no surprise when her work was nominated for an award.",
"Alice Harmon is an ace reporter, so it was not surprising that she was nominated for an award."
] | 0 | closed choice | grade7 | 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 slang (ace).
The first sentence uses formal language in place of the slang, so it is more formal overall. | |
Which better describes the Great Basin Desert ecosystem? | [
"It has heavy snow. It also has soil that is frozen year-round.",
"It has long, cold winters. It also has a small amount of rain or snow."
] | 1 | Figure: Great Basin Desert.
The Great Basin Desert is a cold desert ecosystem in the western United States. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A cold desert is a type of ecosystem. Cold deserts have the following features: a small amount of rain or snow, dry, thin soil, and long, cold winters. So, the Great Basin Desert has long, cold winters. It also has a small amount of rain or snow. | |
Not supported with pagination yet | Using only these supplies, which question can Brandon investigate with an experiment? | [
"Are dishes washed in a dishwasher cleaner than dishes washed by hand?",
"Are dishes cleaner when washed with a soapy sponge or with a soapy rag?",
"Are dishes cleaner when washed with liquid dish detergent or with bar soap?"
] | 2 | Brandon is washing dishes after cooking his dinner. He notices that some of the dishes still feel oily after being washed. He wonders what factors affect how clean dishes are after they are washed. So, he decides to design an experiment. He has the following supplies available:
a sponge
liquid dish detergent
a bar of 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... | |
Which animal is also adapted to be camouflaged in a sandy desert? | [
"merveille-du-jour moth",
"fennec fox"
] | 1 | Flat-tail horned lizards live in the deserts of North America. The is adapted to be camouflaged in a sandy desert.
Figure: flat-tail horned lizard. | 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 flat-tail horned lizard.
The flat-tail horned lizard has sand-colored scales covering its body. 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 fennec fox has sand-colored ... | |
Not supported with pagination yet | Using only these supplies, which question can Luke investigate with an experiment? | [
"Do toy cars with plastic wheels go faster down the cardboard ramp than toy cars with metal wheels?",
"Do toy cars go faster down the ramp made of wood or the ramp made of cardboard?",
"Does a big toy car go down the wooden ramp faster than a small toy car?"
] | 1 | Luke and his sister are building ramps to race their toy cars down. Luke notices that the cars go down some of the ramps faster than others. He wonders what factors affect the cars' speed. So, he decides to design an experiment. He has the following supplies available:
two identical toy cars
a wooden ramp three feet lo... | closed choice | grade7 | 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 | Read the following excerpt from a student essay. How can the writer best improve his or her ideas and development?
Shade-grown coffee is better for the environment than coffee grown in full sun. Coffee naturally grows in shade. However, in the 1990s, farmers began cultivating hybrid coffee plants that grew in full sun ... | [
"by including more background information on the plantations",
"by addressing an opposing point of view",
"by including evidence to support the claim"
] | 2 | closed choice | grade11 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her ideas and development by including evidence to support the claim.
For example, the writer could support the underlined text with examples that show how shade-grown coffee is better for the environment and sun-grown coffee is damaging.
Shade-grown coffee is better for the environ... | |
Not supported with pagination yet | What information supports the conclusion that Neil acquired this trait? | [
"Neil learned history by reading.",
"Neil is most interested in American history."
] | 0 | Read the description of a trait.
Neil knows a lot about history. | closed choice | grade6 | 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.... | |
Is coffee a solid or a liquid? | [
"a solid",
"a liquid"
] | 1 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a li... | Coffee is a liquid. A liquid takes the shape of any container it is in.
If you pour coffee into a different container, the coffee will take the shape of that container. But the coffee will still take up the same amount of space. | ||
What is the name of the colony shown? | [
"Georgia",
"Pennsylvania",
"South Carolina",
"Delaware"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Delaware. | |||
Which material is this origami crane made of? | [
"paper",
"porcelain"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the origami crane.
The origami crane is made of paper.
Paper can be folded into many shapes, such as cranes and airplanes. | ||
Which property do these two objects have in common? | [
"bouncy",
"yellow"
] | 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.
Yellow is a color.
This color is yellow. Both objects are yellow.
A bouncy object will bounce back from the floor if you drop it. Neither of the objects are bouncy.
The property that both objects have in common is yellow. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
bandit - brilliant | [
"bluff",
"buoy"
] | 0 | closed choice | grade7 | 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 bluff is between the guide words bandit - brilliant, it would be found on that page. | |
Not supported with pagination yet | Suppose Valentina decides to go as a superhero. Which result would be a cost? | [
"Valentina will give up the chance to wear the costume she is more excited about.",
"Valentina will save some time and money. She won't have to go out and get a new costume."
] | 0 | Valentina is deciding whether to go as a vampire or a superhero to a costume party. She would rather go as a vampire. But she already has a superhero costume. | 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 Valentina wants or needs:
Valentina will give up the chance to wear the costume she is more excited about. |
Not supported with pagination yet | Which object has the least thermal energy? | [
"a crayon at a temperature of 26°C",
"a crayon at a temperature of 22°C",
"a crayon at a temperature of 30°C"
] | 1 | 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 crayons have the same mass but different temperatures. Since the 22°C crayon is the coldest, it has the least thermal energy. |
What is the name of the colony shown? | [
"Virginia",
"Maine",
"Massachusetts",
"West Virginia"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | |||
Not supported with pagination yet | Which text uses the word disinterested in its traditional sense? | [
"Jacob is disinterested in reading page after page of restaurant reviews on the Internet; he prefers to try out new restaurants for himself and make up his own mind.",
"The restaurant reviews on this website are not exactly disinterested—restaurants can pay to remove unflattering reviews—but Jacob still finds it ... | 1 | closed choice | grade12 | 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 second text uses disinterested in its traditional sense: unbiased or impartial.
The restaurant reviews on this website are not exactly disinterested—restaurants can pay to remove unflattering reviews—but Jacob still finds it useful for finding new places to eat.
The first text uses disinterested in its nontradition... | |
Not supported with pagination yet | Complete the statement. Assume that Zach's mass did not change.
The gravitational potential energy stored between Zach and Earth () as he rode the escalator. | [
"decreased",
"increased",
"stayed the same"
] | 1 | Read the text about a person in motion.
Zach rode an escalator from the first floor to the second floor of a shopping mall. | closed choice | grade8 | 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 Zach and the center of Earth changed.
The second floor is higher than the first floor. As he rode the escalator toward the second floor, the distance between Zach and the center of Earth increased. So, the gravitational potential energy stored between Zach and Earth increased as he ... |
Not supported with pagination yet | What does the verbal irony in this text suggest?
"That fits you well," Jim remarked after Vicky's cap fell over her eyes for the tenth time. | [
"The cap looked nice on Vicky.",
"The cap was too big."
] | 1 | closed choice | grade12 | language science | figurative-language | Literary devices | Interpret the figure 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.
Fits you well ironically suggests that the cap was too big. The cap was falling over Vicky's eyes, so it didn't fit her well at all. | |
Not supported with pagination yet | How long does it take to tie your shoes? | [
"30 seconds",
"30 hours"
] | 0 | Select the better estimate. | closed choice | grade3 | 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 30 seconds.
30 hours is too slow. |
Not supported with pagination yet | Which body part works with muscles to move the body? | [
"lungs",
"stomach",
"skeleton"
] | 2 | closed choice | grade2 | natural science | biology | Animals | Body parts and their functions | |||
Not supported with pagination yet | Which is the bumpiest? | [
"nylon shorts",
"bark",
"rubber ballon"
] | 1 | closed choice | grade4 | 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. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Bumpy is a property. A bumpy material is covered in lumps and bumps. It is not flat or smooth.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the bark is the bumpiest. If you could touch this tree bark, it would feel lumpy and bumpy. | |
Which property do these two objects have in common? | [
"rough",
"slippery"
] | 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 rough object feels scratchy when you touch it. Both objects are rough.
A slippery object is hard to hold onto or stand on. Neither of the objects are slippery.
The property that both objects have in common is rough. | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Ms. West,",
"Dear Ms. west,"
] | 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 second greeting is correct:
Its first word is capitalized, and it ends with a comma. Ms. West is capitalized because it is a proper noun. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Your Student,\nTrevor",
"Your student,\nTrevor"
] | 1 | 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. | |
Not supported with pagination yet | Suppose Julie decides to take a trip to Minnesota. Which result would be a cost? | [
"Julie will save some money. Plane tickets for Julie to get to Minnesota are less expensive than tickets to Tennessee.",
"Julie will give up the chance to go to Tennessee. She would have enjoyed a trip to Tennessee more than Minnesota."
] | 1 | Julie is deciding whether to take a trip to Tennessee or Minnesota. She wants to enjoy her trip. But she is also trying to save money. | 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 Julie wants or needs:
Julie will give up the chance to go to Tennessee. She would have enjoyed a trip to Tennessee more than Minnesota. |
Not supported with pagination yet | Compare the motion of three ducks. Which duck was moving at the highest speed? | [
"a duck that moved 230miles east in 5hours",
"a duck that moved 225miles west in 5hours",
"a duck that moved 255miles east in 5hours"
] | 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 mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving f... | Look at the distance each duck moved and the time it took to move that distance. The direction each duck moved does not affect its speed.
Notice that each duck moved for 5 hours. The duck that moved 255 miles moved the farthest distance in that time. So, that duck must have moved at the highest speed. |
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.