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Not supported with pagination yet | Is the following trait inherited or acquired?
Jonathan 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 | Which is the smoothest? | [
"rock wall",
"glass marbles",
"bark"
] | 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... | Smooth is a property. A smooth material is not rough or bumpy.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the glass marbles are the smoothest. Glass marbles do not feel rough or bumpy when you touch them. | |
Not supported with pagination yet | What kind of sentence is this?
Please take the garbage out. | [
"imperative",
"interrogative"
] | 0 | 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 makes a request, so it is an imperative sentence. Here, it ends with a period. | |
Not supported with pagination yet | Which sentence is more formal? | [
"The senator announced unexpectedly that she was resigning.",
"Out of the blue, the senator announced that she was resigning."
] | 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 first sentence is less formal. You can tell because it uses an idiom (out of the blue).
The second sentence uses formal language in place of the idiom, so it is more formal overall. | |
Not supported with pagination yet | What do these two changes have in common?
an old sandwich rotting in a trashcan
milk going sour | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 2 | 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.
A sandwich rotting is a chemical change. The matter in the sandwich breaks down and slowly turns into a different type of matter.
Milk going sour is a chemical change. The type of matter in the milk slowly changes. The new matter that is formed gives the milk its sour taste.
Step 2: Loo... | |
Not supported with pagination yet | What does the verbal irony in this text suggest?
"This is the best day of my life," Mr. Yang mumbled after his car broke down on the way to an important job interview. | [
"Mr. Yang was already running late.",
"Mr. Yang was having a bad day."
] | 1 | closed choice | grade6 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
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.
The best day of my life ironically suggests that Mr. Yang was having a bad day. He was having the opposite of a good day because his car broke down when he needed to be on time. | |
Not supported with pagination yet | Complete the statement.
Silicon is (). | [
"an elementary substance",
"a compound"
] | 0 | Silicon is used to make computer chips. The chemical formula for silicon is Si. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | 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 ... | You can tell whether silicon is an elementary substance or a compound by counting the number of atomic symbols in its chemical formula. An atomic symbol consists of either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for silicon contains one atomic symbol: Si. So... |
Not supported with pagination yet | Is the following trait inherited or acquired?
Ryan has a scar on his right knee. | [
"acquired",
"inherited"
] | 0 | 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 | Which type of sentence is this?
Max took several incredible panoramic photographs of the sweeping view from the top of Table Mountain. | [
"compound",
"compound-complex",
"simple",
"complex"
] | 2 | closed choice | grade9 | 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 simple. It is a single independent clause.
Max took several incredible panoramic photographs of the sweeping view from the top of Table Mountain. | |
Not supported with pagination yet | Select the elementary substance. | [
"benzene (C6H6)",
"silicon (Si)",
"boron trichloride (BCl3)"
] | 1 | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Identify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | Look at the chemical formula for each substance, and count the number of symbols in the formula. Then, decide if the substance is an elementary substance. The chemical formula for boron trichloride contains two symbols: B for boron and Cl for chlorine. So, boron trichloride is made of two chemical elements bonded toget... | |
What is the capital of Nebraska? | [
"Omaha",
"Lincoln",
"Wichita",
"Jefferson City"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | |||
Not supported with pagination yet | Which tense does the sentence use?
Mr. Boyd explained the idea to his son. | [
"past tense",
"present tense",
"future tense"
] | 0 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in past tense. You can tell because it uses a past-tense verb, explained. The verb ends in -ed and tells you about something that has already happened. | |
Which is this organism's scientific name? | [
"Ardea herodias",
"great blue heron"
] | 0 | This organism is Ardea herodias. It is also called a great blue heron. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Ardea herodias is written in italics. The first word is capitalized, and the second word is not.
So, Ardea herodias is the scientific name. | |
Which month is the wettest on average in Cairo? | [
"January",
"July",
"September"
] | 0 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Cairo, look at the graph.
Choice "Jan" is incorrect.
Choice "Jul" 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. | |
Not supported with pagination yet | Select the liquid. | [
"beads",
"lemonade",
"air inside a balloon",
"empty cup"
] | 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... | An empty cup is a solid. A solid has a size and shape of its own. When you fill a cup with water, the cup still has its own shape.
Each bead in the jar is a solid. If you put many beads into a bottle, they will take the shape of the bottle, as a liquid would. But be careful! Beads are not a liquid. Each bead still has ... | |
Not supported with pagination yet | Suppose Owen decides to plant the daffodils. Which result would be a cost? | [
"He will save some space. The daffodils will use up less space than the elm tree would have used up.",
"Owen will give up the chance to look at the elm tree. He thinks it would have looked more beautiful than the daffodils."
] | 1 | Owen is deciding whether to plant daffodils or an elm tree in his backyard. He wants to make his backyard more beautiful. But he also wants to leave space for doing fun things. | closed choice | grade4 | 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 Owen wants or needs:
Owen will give up the chance to look at the elm tree. He thinks it would have looked more beautiful than the daffodils. |
Not supported with pagination yet | Which correctly shows the title of a movie? | [
"***Horton Hears a Who***",
"\"Horton Hears a Who!\""
] | 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 movie should be in italics.
The correct title is **Horton Hears a Who**. | |
Not supported with pagination yet | Which text message is more formal? | [
"Ms. Randolph is already here. She's waiting in the lobby.",
"Heads up! Randolph is here. In the lobby."
] | 0 | closed choice | grade9 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The second text message is more formal. It uses complete sentences, avoids slang (heads up), and uses the person's title (Ms. Randolph). The other text message includes more casual language and sentence fragments. | |
Complete the text.
Athens was a major trading city-state along the coast of the () Sea. Sparta, known for its well-trained soldiers, was located to the () of Athens. | [
"Aegean . . . northeast",
"Ionian . . . northwest",
"Ionian . . . southeast",
"Aegean . . . southwest"
] | 3 | Ancient Greece was made up of multiple city-states along the Ionian (ahy-OH-nee-uhn), Mediterranean (med-i-tuh-REY-nee-uhn), and Aegean (ah-GEE-an) seas. Two of the most powerful city-states were Athens and Sparta. The map below shows ancient Greece around 500 BCE. Look at the map. Then complete the text below. | closed choice | grade6 | social science | world-history | Greece | Comparing Athens and Sparta: part II | Find Athens and Sparta on the map.
The map shows that Athens is located along the coast of the Aegean Sea. Now look at Sparta and the compass rose. Sparta is located to the southwest of Athens. | ||
Which statement describes the Cape Breton Highlands National Park ecosystem? | [
"It has soil that is frozen year-round.",
"It has soil that is rich in nutrients.",
"It has long, cold winters and short, cool summers."
] | 2 | Figure: Cape Breton Highlands National Park.
Cape Breton Highlands National Park is a taiga ecosystem in eastern Canada. It is mostly covered with taiga forests that are home to moose, bears, bald eagles, and other organisms. | closed choice | grade8 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A taiga is a type of ecosystem. Taigas have the following features: long, cold winters and short, cool summers, many evergreen trees, and soil that is poor in nutrients. So, the following statement describes the Cape Breton Highlands National Park ecosystem: long, cold winters and short, cool summers, many evergreen tr... | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Jayla has naturally straight hair. | [
"acquired",
"inherited"
] | 1 | Hint: Some humans are born with naturally straight hair. Others are born with naturally curly hair. | 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... | Human hair can be naturally straight or naturally curly. Straight and curly are examples of hair texture.
Some people use tools to change how their hair looks. But this doesn't affect the natural texture of their hair. So, having naturally straight hair is an inherited trait. |
Not supported with pagination yet | Using only these supplies, which question can Emma investigate with an experiment? | [
"Does a catapult with a longer arm launch a rubber ball farther than a catapult with a shorter arm?",
"Does a heavier ball travel farther than a lighter ball when launched from a catapult?",
"Does a rubber ball travel farther when launched from a metal catapult or from a wooden catapult?"
] | 0 | Emma visits a museum about ancient Greece. She notices an exhibit with models of wooden catapults that were used to launch large rocks across battlefields. She wonders what factors affect how far a catapult can launch an object. So, she decides to design an experiment. She has the following supplies available:
a wooden... | 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 stick of butter has more thermal energy? | [
"the colder stick of butter",
"the hotter stick of butter"
] | 1 | Two sticks of butter are identical except for their temperatures. | closed choice | grade5 | natural science | physics | Heat and thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two sticks of butter are made of the same material and have the same mass. So, the hotter stick of butter has more thermal energy. |
Not supported with pagination yet | What information supports the conclusion that Brad inherited this trait? | [
"Brad and his siblings all have naturally straight hair.",
"Brad and his biological father have short hair.",
"Brad's biological mother often wears her naturally brown hair in a bun."
] | 2 | Read the description of a trait.
Brad has naturally brown hair. | closed choice | grade7 | 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 | Would you find the word address on a dictionary page with the following guide words?
ache - age | [
"no",
"yes"
] | 1 | 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 address is between the guide words ache - age, it would be found on that page. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 2 than in Pair 1. So, the magnit... | |
Not supported with pagination yet | Which correctly shows the title of a newspaper? | [
"Green Valley News and Sun",
"Green valley News and Sun"
] | 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 word and is not important, so it should not be capitalized.
The correct title is Green Valley News and Sun. | |
Which of these oceans does the prime meridian intersect? | [
"the Pacific Ocean",
"the Indian Ocean",
"the Atlantic Ocean"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | ||
What is the capital of Georgia? | [
"Savannah",
"Athens",
"Atlanta",
"Raleigh"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Atlanta is the capital of Georgia. | |||
Select the mammal below. | [
"great white shark",
"bison"
] | 1 | Mammals have hair or fur and feed their young milk. A red kangaroo 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 bison is a mammal. It has fur and feeds its young milk.
Male bison have horns. They can use their horns to defend themselves.
A great white shark is a fish. It lives underwater. It has fins, not limbs.
Great white sharks can live for up to 70 years. | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
It is snowing in Gavin's town today. | [
"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.
It is snowing in Gavin's town today.
This passage tells you about the precipitation today in Gavin's town. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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 | 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 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. | |
Not supported with pagination yet | Complete the statement.
Helium is (). | [
"a compound",
"an elementary substance"
] | 1 | Helium is a gas that is less dense than air. So, helium is often used to fill balloons to make them float. The chemical formula for helium is He. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | You can tell whether helium is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for helium is He. This formula contains one symbol: He. So, the f... |
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Aquamarine is not made by living things. It is a solid.",
"Gypsum is a solid. It is formed in nature.",
"A brick is made in a factory. It is a solid."
] | 2 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Aquamarine is a mineral.
Gypsum is a mineral.
A brick is made in a factory. But all minerals are formed in nature.
So, a brick is not a mineral. | |
Not supported with pagination yet | Which correctly shows the title of an article? | [
"\"the 25 Best Songs of the Year\"",
"\"The 25 Best Songs of the Year\""
] | 1 | closed choice | grade5 | language science | capitalization | Capitalization | 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 "The 25 Best Songs of the Year." | |
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."
] | 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 | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Which is this organism's scientific name? | [
"Flabellina iodinea",
"Spanish shawl nudibranch"
] | 0 | This organism is a Spanish shawl nudibranch. It is also called Flabellina iodinea. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Flabellina iodinea is written in italics. The first word is capitalized, and the second word is not.
So, Flabellina iodinea is the scientific name. | |
Not supported with pagination yet | Select the animal. | [
"Basil has green leaves.",
"Grizzly bears walk and run."
] | 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... | Basil is a plant. It has green leaves.
Basil leaves are used in cooking.
A grizzly bear is an animal. It walks and runs.
Adult grizzly bears can weigh between 300 and 800 pounds. But when a grizzly bear cub is born, it only weighs about one pound! | |
Not supported with pagination yet | Select the mammal. | [
"Nile crocodile",
"cobra",
"green frog",
"humpback whale"
] | 3 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Mammals have hair or fur and feed their young milk. | A Nile crocodile is a reptile. It has scaly, waterproof skin.
Crocodiles hunt their prey in or near water.
A green 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 in water.
A cobra is a reptile. It has scaly, waterproof skin.
Most ... | |
Not supported with pagination yet | Select the solid. | [
"apple juice",
"water in a fishbowl",
"rag doll"
] | 2 | closed choice | grade2 | natural science | physics | States of matter | Identify solids and liquids | 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... | ||
Which animal's body is better adapted for protection against a predator with sharp teeth? | [
"desert tortoise",
"fox snake"
] | 0 | Queen scallops live in the ocean. They have a hard outer shell.
The is adapted to protect itself from predators with sharp teeth. It can pull the soft parts of its body into its shell when attacked.
Figure: queen scallop. | 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 queen scallop.
The queen scallop has a hard outer shell. Its body is adapted for protection against a predator with sharp teeth. The hard shell makes it difficult for predators to hurt or kill the queen scallop.
Now look at each animal. Figure out which animal has a similar adaptation.
The de... | |
Not supported with pagination yet | How long does it take to tie your shoes? | [
"29 hours",
"29 seconds"
] | 1 | 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 29 seconds.
29 hours is too slow. |
Which month has the highest average precipitation in Santiago? | [
"October",
"August",
"June"
] | 2 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Santiago, look at the graph.
Choice "Jun" is incorrect.
Choice "Aug" is incorrect.
Choice "Oct" is incorrect.
June has an average monthly precipitation of about 80 millimeters. This is higher than in any other month. So, June has the highest average precipitation. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
family - fowl | [
"fluff",
"fright"
] | 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 fluff is between the guide words family - fowl, it would be found on that page. | |
What is the capital of South Carolina? | [
"Indianapolis",
"Jackson",
"Charleston",
"Columbia"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Columbia is the capital of South Carolina. | |||
Which is the main persuasive appeal used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 0 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to logos, or reason. It uses a graph to display factual information. | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
Are you playing golf with Nick this weekend? I wouldn't do that if I were you. Nick is dating Jordan, and everyone knows that Jordan cheats at golf. | [
"guilt by association: a negative association intended to discredit someone or something",
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences",
"bandwagon fallacy: the assumption that the popular choice is automatically correct"
] | 0 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Nick cheats at golf because the person he is dating cheats at golf. However, the behavior of someone's girlfriend or boyfriend does not necessarily reflect the behavior of that person. This illustrates a type of logical fallacy known as guilt by association. | |
Not supported with pagination yet | What does the Third Amendment say about soliders? | [
"No soldiers are allowed in the United States during peacetime.",
"The government can't force people to keep soldiers in their homes during peacetime.",
"All men need to sign up as soldiers if the United States goes to war.",
"Soldiers are the only Americans who don't have to pay taxes."
] | 1 | closed choice | grade4 | social science | civics | Government | The Bill of Rights | The Third Amendment says that the government can't force people to keep soldiers in their homes during peacetime. The amendment says that no soldier shall be "quartered in any house." In this case, "quartered" means "given a place to stay." The complete text of the Third Amendment is below. Are there any times when an ... | ||
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 strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. | |
Is sphalerite a mineral or a rock? | [
"mineral",
"rock"
] | 0 | Sphalerite has the following properties:
fixed crystal structure
pure substance
translucent
found in nature
not made by organisms
solid | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Sphalerite has all the properties of a mineral. So, sphalerite is a mineral. | |
Identify the question that Zack's experiment can best answer. | [
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?",
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Zack set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Zack watched cardinals visiting the feeders dur... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Based on this information, what is this pea plant's phenotype for the pod color trait? | [
"dd",
"yellow pods"
] | 1 | In a group of pea plants, some individuals have green pods and others have yellow pods. In this group, the gene for the pod color trait has two alleles. The allele D is for green pods, and the allele d is for yellow pods.
A certain pea plant from this group has yellow pods. This plant has two alleles for yellow pods. | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. The pea plant's observable version of the pod color trait is yellow pods. So, the plant's phenotype for the pod color trait is yellow pods. |
Which country is highlighted? | [
"Dominica",
"the Dominican Republic",
"Saint Vincent and the Grenadines",
"Saint Kitts and Nevis"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is the Dominican Republic.
Why does the Dominican Republic share its island with another country?
The Dominican Republic and Haiti share the island of Hispaniola. It is home to the earliest European settlements in the Americas. Christopher Columbus founded the first European settlement on the island in 149... | |||
Not supported with pagination yet | Which sentence uses a simile? | [
"Her laughter was like a bird's song.",
"Her laughter was a bird's song."
] | 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:
Her laughter was like a bird's song.
The words laughter and bird's song are compared using the word like.
This sentence uses a metaphor:
Her laughter was a bird's song.
The words laughter and bird's song are compared without the word like or as. | |
What is the capital of Maine? | [
"Charleston",
"Portland",
"Hartford",
"Augusta"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | |||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 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 | 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 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... | |
Not supported with pagination yet | What is the mass of a can of soup? | [
"13 tons",
"13 pounds",
"13 ounces"
] | 2 | Select the best estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose customary 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 customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of a can of soup is 13 ounces.
13 pounds and 13 tons are both too heavy. |
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. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... | |
What is this spider's scientific name? | [
"Pritha insularis",
"Pritha garfieldi"
] | 1 | In 2015, this species of spider was discovered in the Alborz Mountains in Iran. It was named after the actor Andrew Garfield, who starred in the movie The Amazing Spider-Man. | closed choice | grade4 | natural science | biology | Scientific names | Origins of scientific names | When a scientist identifies a new organism, he or she chooses its scientific name.
Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits.
Many of the w... | This organism's scientific name refers to Andrew Garfield.
The word garfieldi refers to Andrew Garfield. So, this spider's scientific name is Pritha garfieldi. | |
Not supported with pagination yet | Which tense does the sentence use?
Dan will pitch the ball quickly. | [
"present tense",
"past tense",
"future tense"
] | 2 | closed choice | grade3 | 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, pitch. The verb tells you about something that is going to happen. | |
Which of the following could Brandon's test show? | [
"how much athletes would sweat in the fabric",
"if the sample fabric would absorb one drop of water in less than one second",
"how long it would take the sample fabric to dry after it absorbed one drop of water"
] | 2 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Is there a sentence fragment?
Due to warmer winters, the population of brown tawny owls in Finland has increased dramatically. With less snow on the ground, brown owls can better blend in with the environment, evading predators. | [
"no",
"yes"
] | 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... | There is not a sentence fragment. These are complete sentences because they express complete thoughts.
Due to warmer winters, the population of brown tawny owls in Finland has increased dramatically. With less snow on the ground, brown owls can better blend in with the environment, evading predators. | |
Not supported with pagination yet | Which correctly shows the title of a TV show? | [
"are You Afraid of the dark?",
"Are You Afraid of the Dark?"
] | 1 | closed choice | grade3 | 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 Are You Afraid of the Dark? | |
Select the organism in the same species as the yellow-footed gull. | [
"Goura cristata",
"Caprimulgus macrurus",
"Larus livens"
] | 2 | This organism is a yellow-footed gull. Its scientific name is Larus livens. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A yellow-footed gull's scientific name is Larus livens.
Larus livens has the same scientific name as a yellow-footed gull. So, these organisms are in the same species.
Goura cristata does not have the same scientific name as a yellow-footed gull. So, Larus livens and Goura cristata are not in the same species.
Caprimul... | |
What is the capital of California? | [
"Helena",
"Austin",
"Sacramento",
"Los Angeles"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Sacramento is the capital of California. | |||
Not supported with pagination yet | What kind of sentence is this?
Mr. McCall gave a lecture on water conservation, during which he stressed the importance of not watering lawns during a drought. | [
"interrogative",
"exclamatory",
"declarative"
] | 2 | closed choice | grade8 | 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, and it ends with a period. It is a declarative sentence. | |
Is the following statement about our solar system true or false?
The four largest planets are made mainly of gas or ice. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To decide which four planets are the largest, look at the volumes and compare the exponents. The volumes of Jupiter, Saturn, Uranus, and Neptune have the largest exponents. So, these four planets are the largest.
Jupiter and Saturn are made mainly of gas. Uranus and Neptune are made mainly of ice. So, the four largest ... | |
Not supported with pagination yet | What do these two changes have in common?
melting wax
picking up a paper clip with a magnet | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 2 | 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 wax is a change of state. So, it is a physical change. The wax changes from solid to liquid. But it is still made of the same type of matter.
Picking up a paper clip with a magnet is a physical change. The paper clip sticks to the magnet, but it is still made of the same type of... | |
Which air temperature was measured within the outlined area shown? | [
"23°C",
"12°C",
"-23°C"
] | 2 | The map below shows air temperatures in the lower atmosphere on April 15, 2017. The outlined area shows an air mass that influenced weather in North America 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.
10°C.
-23°C is within this range.
12°C and 23°C are outside of this range. | |
Not supported with pagination yet | Based on this information, what is Lollipop's phenotype for the fur color trait? | [
"dark fur",
"Ff"
] | 0 | In a group of rock pocket mice, some individuals have dark fur and others have light fur. In this group, the gene for the fur color trait has two alleles. The allele F is for dark fur, and the allele f is for light fur.
Lollipop, a rock pocket mouse from this group, has dark fur. Lollipop has one allele for dark fur an... | 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 phenotype for a trait is its observable version of that trait. Lollipop's observable version of the fur color trait is dark fur. So, Lollipop's phenotype for the fur color trait is dark fur. |
Not supported with pagination yet | Select the fish. | [
"spotted dolphin",
"western toad",
"Hermann's tortoise",
"whale shark"
] | 3 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Fish live underwater. They have fins, not limbs. | A western toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole.
A whale shark is a fish. It lives underwater. It has fins, not limbs.
Whale sharks are the largest fish in the world! Adult whale sharks can weigh over 21 tons—as much as seven elephan... | |
Which of the following statements is true? | [
"Soap is a reactant in the saponification reaction.",
"Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.",
"A chemical change occurs during saponification."
] | 2 | A substance's chemical structure depends on the number and types of atoms in each of its molecules, as well as on how those atoms are arranged. Substances with different chemical structures have different physical and chemical properties.
When a substance is a reactant in a chemical reaction, its chemical structure cha... | closed choice | grade7 | natural science | chemistry | Chemical reactions | Explore chemical structure and properties: soapmaking | Soap is a reactant in the saponification reaction.
Soap is produced during saponification. So, soap is a product, not a reactant, in this reaction.
Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.
The products of a chemical reaction are made up of the same number and ty... | ||
Which country is highlighted? | [
"Solomon Islands",
"Papua New Guinea",
"New Zealand",
"Australia"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead. | |||
Not supported with pagination yet | How long is a bench? | [
"8 inches",
"8 yards",
"8 feet",
"8 miles"
] | 2 | Select the best estimate. | closed choice | grade6 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a bench is 8 feet.
8 inches is too short. 8 yards and 8 miles are too long. |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Whitney had her fifteen minutes when her video of kayaking with dolphins went viral. | [
"modern history",
"a song"
] | 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 fifteen minutes is modern history.
In a catalog that accompanied an exhibit of his work, pop artist Andy Warhol said, "In the future, everybody will be world-famous for fifteen minutes," meaning that fame would be briefly available even to those who did nothing spectacular.
The allusion fifte... | |
Which of these states is farthest south? | [
"Arizona",
"Massachusetts",
"Minnesota",
"Virginia"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the south arrow is pointing. Arizona is farthest south. | ||
Not supported with pagination yet | Complete the sentence.
A banana getting ripe on the counter is a (). | [
"chemical change",
"physical change"
] | 0 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Identify 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.
Burning a piece of paper is a chemical change. When paper gets hot enough, it reacts with oxygen in the air and burn... | A banana getting ripe on the counter is a chemical change. As a banana ripens, the type of matter in it changes. The peel changes color and the inside becomes softer and sweeter. | |
Not supported with pagination yet | Is pulling weeds a good or a service? | [
"a service",
"a good"
] | 0 | closed choice | grade3 | social science | economics | Basic economic principles | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether pulling weeds is a good or a service, ask these questions:
Is pulling weeds something you can touch? No.
Is pulling weeds a job you might pay someone else to do? Yes.
So, pulling weeds is a service. | |
Not supported with pagination yet | What is the temperature of a warm swimming pool? | [
"30°F",
"30°C"
] | 1 | Select the better estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Estimate temperatures | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Temperature can be written with units of degrees Fahrenheit (°F) or Celsius (°C). Use the list below to compare the two units.
212°F | Water boils | 100°C
98.6°F | Body temperature | 37°C
68°F ... | The better estimate for the temperature of a warm swimming pool is 30°C.
30°F is too cold. |
What is the capital of Virginia? | [
"Dover",
"Richmond",
"Jefferson City",
"Jersey City"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | |||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... | |
Not supported with pagination yet | Based on this information, what is Slim's phenotype for the body hair trait? | [
"a hairless body",
"bb"
] | 0 | In a group of cats, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele B is for a hairy body, and the allele b is for a hairless body.
Slim, a cat from this group, has a hairless body. Slim has two alleles for a hairless body. | 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 phenotype for a trait is its observable version of that trait. Slim's observable version of the body hair trait is a hairless body. So, Slim's phenotype for the body hair trait is a hairless body. |
Not supported with pagination yet | What do these two changes have in common?
molding clay into the shape of a pot
shaking up salad dressing | [
"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.
Molding clay into the shape of a pot is a physical change. The clay gets a different shape. But it is made of the same type of matter.
Shaking up salad dressing is a physical change. The different parts mix together, but they are still made of the same type of matter.
Step 2: Look at ea... | |
Not supported with pagination yet | What information supports the conclusion that Winston inherited this trait? | [
"Winston and his biological father have short hair.",
"Winston and his siblings all have naturally straight hair.",
"Winston's biological mother often wears her naturally brown hair in a bun."
] | 2 | Read the description of a trait.
Winston has naturally brown 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.... | |
Which property do these three objects have in common? | [
"scratchy",
"rough",
"sweet"
] | 2 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A scratchy object is rough and itchy against your skin. None of the objects are scratchy.
A rough object feels scratchy when you touch it. The chocolate milkshake and the honey are not rough.
Sugar has a sweet taste. All three objects are sweet.
The ... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Much to our shock, Elijah chose to turn the other cheek when Dana insulted him in a meeting. | [
"the Bible",
"a song"
] | 0 | closed choice | grade10 | 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 turn the other cheek is the Bible.
In the Bible, Jesus counsels his followers to resist retaliation. He says that if they are struck on the right cheek, they shouldn't lash out; instead, they should turn the other cheek toward their attacker.
The allusion turn the other cheek means to respond... | |
Not supported with pagination yet | Which sentence states a fact? | [
"The Titanic sank in the Atlantic Ocean.",
"The movie about the sinking of the Titanic is wonderful."
] | 0 | closed choice | grade5 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or fe... | The second sentence states a fact.
The Titanic sank in the Atlantic Ocean.
It can be proved by reading a history book about the Titanic.
The first sentence states an opinion.
The movie about the sinking of the Titanic is wonderful.
Wonderful shows what a person believes, thinks, or feels. Another person might have a di... | |
Not supported with pagination yet | Which tense does the sentence use?
Friends lean on each other during hard times. | [
"present tense",
"future tense",
"past tense"
] | 0 | closed choice | grade3 | 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 present tense. You can tell because it uses a present-tense verb, lean. The verb tells you about something that is true or happening now. | |
Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 1 | Figure: Eastern Colorado.
Eastern Colorado is in the Great Plains. This part of the United States often experiences windy conditions year-round. Windmills, like the one in this picture, use energy from the wind to pump water.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the patte... | closed choice | grade4 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Eastern Colorado is in the Great Plains. This part of the United States often experiences windy conditions year-round. Windmills, like the one in this picture, use energy from the wind to pump water.
The underlined part of the passage tells you about the usual wind patterns in Eastern Colora... | |
Not supported with pagination yet | Which object has less thermal energy? | [
"a bowl of oatmeal at a temperature of 35°C",
"a bowl of oatmeal at a temperature of 30°C"
] | 1 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ... | The two bowls of oatmeal have the same mass but different temperatures. Since the 30°C bowl of oatmeal is colder than the 35°C bowl of oatmeal, it has less thermal energy. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | 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. | |
Which solution has a higher concentration of purple particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
Select the statement that is true about Sydney's average monthly precipitation. | [
"March is the driest month of the year.",
"Each month has about the same amount of precipitation.",
"More precipitation falls in June than in December."
] | 2 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Sydney, look at the graph.
Choice "Mar" is incorrect.
Choice "Jun" is incorrect.
Choice "Dec" is incorrect.
Choice "March is the driest month of the year." is incorrect.
The driest month is the one with the lowest average monthly precipitation. September, not March, has t... | |
Not supported with pagination yet | Which letter opening is more formal? | [
"Dear Mr. Navarro,",
"Dear Ron,"
] | 0 | closed choice | grade11 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The first letter opening is more formal. It uses the recipient's personal title and last name. The other opening uses the recipient's first name, suggesting a more familiar relationship. | |
Not supported with pagination yet | What is the volume of a can of soda pop? | [
"305 liters",
"305 milliliters"
] | 1 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric 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 metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a can of soda pop is 305 milliliters.
305 liters is too much. |
Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the 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.
... | |
Which animal's feet are also adapted for digging? | [
"eastern mole",
"slender-legged tree frog"
] | 0 | Star-nosed moles are found in many parts of North America. They live in burrows. The moles eat earthworms and nuts, which they find in the soil. The feet of the are adapted for digging.
Figure: star-nosed mole. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the star-nosed mole.
The star-nosed mole has long, straight claws. Its feet are adapted for digging. The star-nosed mole uses its claws to break up soil and move it out of the way.
Now look at each animal. Figure out which animal has a similar adaptation.
The eastern mole has long, straight claws... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Not supported with pagination yet | How long is a leather belt? | [
"90 meters",
"90 centimeters"
] | 1 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers?
The number 16 on its own does not give you much informa... | The better estimate for the length of a leather belt is 90 centimeters.
90 meters is too long. |
Is the following statement about our solar system true or false?
The largest planet is made mainly of ice. | [
"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 Jupiter is the largest planet and that Jupiter is made mainly of gas. So, the largest planet is made mainly of gas. |
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.