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What is the capital of Idaho? | [
"Boise",
"Santa Fe",
"Nampa",
"Nashville"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Boise is the capital of Idaho. | |||
Not supported with pagination yet | Based on this information, what is this trout's phenotype for the body color trait? | [
"a blue body",
"a greenish-brown body"
] | 0 | In a group of rainbow trout, some individuals have a greenish-brown body and others have a blue body. In this group, the gene for the body color trait has two alleles. The allele for a greenish-brown body (B) is dominant over the allele for a blue body (b).
A certain rainbow trout from this group has the homozygous gen... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | The rainbow trout's genotype for the body color gene is bb. The rainbow trout's genotype of bb has only b alleles. The b allele is for a blue body. So, the rainbow trout's phenotype for the body color trait must be a blue body.
To check this answer, consider whether the rainbow trout's alleles are dominant or recessive... |
Not supported with pagination yet | Which glas of water has a lower temperature? | [
"the glass of water with more thermal energy",
"the glass of water with less thermal energy"
] | 1 | Two 400-gram glasses of water 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 water are made of the same material and have the same mass. So, the glass of water with less thermal energy has a lower temperature. |
What is the probability that an American curl cat produced by this cross will be homozygous dominant for the ear type gene? | [
"1/4",
"3/4",
"4/4",
"2/4",
"0/4"
] | 0 | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for straight ears (e) is recessive to the allele for curled ears (E).
This Punnett square shows a cross between two American curl cats. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | ||
Not supported with pagination yet | Which type of sentence is this?
Raymond always approaches difficult tasks enthusiastically, and he frequently motivates others with his energy and fervor. | [
"simple",
"compound",
"complex",
"compound-complex"
] | 1 | 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 compound. It is made up of two independent clauses joined by the coordinating conjunction and.
Raymond always approaches difficult tasks enthusiastically, and he frequently motivates others with his energy and fervor. | |
Use the timeline to complete the following sentence.
The year () was before 100 CE. | [
"200 CE",
"300 BCE",
"500 CE"
] | 1 | Timelines are used to show when events happened. Timelines go from left to right. Events on the left happened earlier than events on the right.
On some timelines, dates are divided into two categories based on their relation to the year 1 CE.
Dates that occurred before 1 CE are labeled BCE, or Before the Common Era. BC... | closed choice | grade4 | social science | world-history | Social studies skills | Reading and creating timelines with BCE and CE | Timelines are used to show when events happened. Timelines go from left to right. Events on the left happened earlier than events on the right.
On some timelines, dates are divided into two categories:
Dates that occurred before the year 1 CE are labeled BCE, or Before the Common Era. These dates are sometimes labeled ... | Find the year 100 CE on the timeline.
Now look for the choice that is to the left of the year 100 CE. The year 300 BCE is to the left of the year 100 CE on the timeline. That means that 300 BCE was before 100 CE. | |
Not supported with pagination yet | What kind of sentence is this?
That huge cruise ship even has a small amusement park on it! | [
"exclamatory",
"declarative",
"interrogative"
] | 0 | closed choice | grade6 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence tells about something, but it shows surprise and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | How long does it take to tie your shoes? | [
"21 minutes",
"21 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 21 seconds.
21 minutes is too slow. |
Select the mammal below. | [
"fruit bat",
"bull shark"
] | 0 | Mammals have hair or fur and feed their young milk. A giraffe 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 bull shark is a fish. It lives underwater. It has fins, not limbs.
Bull sharks can live in both fresh and salt water. They are found in rivers and in shallow parts of the ocean.
A fruit bat is a mammal. It has hair and feeds its young milk.
Fruit bats eat fruit and drink nectar from flowers. They have special teeth t... | |
What is the expected ratio of offspring with an unspotted tail to offspring with a spotted tail? Choose the most likely ratio. | [
"4:0",
"0:4",
"1:3",
"3:1",
"2:2"
] | 1 | In a group of guppies, some individuals have a spotted tail and others have an unspotted tail. In this group, the gene for the tail spots trait has two alleles. The allele for a spotted tail (I) is dominant over the allele for an unspotted tail (i).
This Punnett square shows a cross between two guppies. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with an unspotted tail or a spotted tail, consider whether each phenotype is the dominant or recessive allele's version of the tail spots trait. The question tells you that the I allele, which is for a spotted tail, is dominant over the i allele, whi... | |
Select the organism in the same species as the brown pelican. | [
"Pelecanus occidentalis",
"Haliaeetus pelagicus",
"Pelecanus philippensis"
] | 0 | This organism is a brown pelican. Its scientific name is Pelecanus occidentalis. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A brown pelican's scientific name is Pelecanus occidentalis.
Pelecanus occidentalis is in the same genus as Pelecanus philippensis, but they are not in the same species.
Organisms in the same species have the same scientific names. Pelecanus occidentalis and Pelecanus philippensis are different species within the same ... | |
Which is this organism's common name? | [
"American crocodile",
"Crocodylus acutus"
] | 0 | This organism is an American crocodile. It is also called Crocodylus acutus. | closed choice | grade6 | 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,... | Crocodylus acutus is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Crocodylus acutus is the organism's scientific name. So, you know that American crocodile is the common name. | |
Which property do these three objects have in common? | [
"translucent",
"bouncy",
"colorful"
] | 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 translucent object lets light through. But you cannot see clearly through a translucent object. The crayons are not translucent.
A bouncy object will bounce back from the floor if you drop it. The silk tie is not bouncy.
A colorful object has one o... | |
Which of the following was a dependent variable in this experiment? | [
"the number of ripe avocados",
"the number of ripe bananas"
] | 0 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Eliana liked to make guacamole, but she could often find only unripe at the grocery store. In biology class, Eliana learned that ripe fruits produce a gas called ethylene that can cause other fruits to ripen.... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | ||
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Patty,",
"dear Patty,"
] | 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 second greeting is correct:
Its first word is capitalized, and it ends with a comma. Patty is capitalized because it is a proper noun. | |
Not supported with pagination yet | Which figure of speech is used in this text?
You've reached Adam Cheng's voice mail. Please leave a detailed message at the beep, and I will return your call at my earliest convenience. | [
"verbal irony",
"onomatopoeia"
] | 1 | closed choice | grade6 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses onomatopoeia, a word that expresses a sound.
Beep represents the sound that tells the caller to start recording a message. | |
Which of these states is farthest north? | [
"North Carolina",
"Florida",
"Arkansas",
"Utah"
] | 3 | 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 north arrow is pointing. Utah is farthest north. | ||
What is the expected ratio of offspring with a spotted tail to offspring with an unspotted tail? Choose the most likely ratio. | [
"3:1",
"1:3",
"0:4",
"2:2",
"4:0"
] | 4 | In a group of guppies, some individuals have a spotted tail and others have an unspotted tail. In this group, the gene for the tail spots trait has two alleles. The allele for a spotted tail (I) is dominant over the allele for an unspotted tail (i).
This Punnett square shows a cross between two guppies. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with a spotted tail or an unspotted tail, consider whether each phenotype is the dominant or recessive allele's version of the tail spots trait. The question tells you that the I allele, which is for a spotted tail, is dominant over the i allele, whi... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | 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. | |
Not supported with pagination yet | What kind of sentence is this?
Do you know Donald from soccer camp, or do you have another connection with him? | [
"imperative",
"interrogative",
"declarative"
] | 1 | 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 asks something, and it ends with a question mark. It is an interrogative sentence. | |
Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: Gutenberg Castle, Liechtenstein.
Liechtenstein is a small country in Europe with many castles. Clouds settled over Gutenberg Castle on the first day of winter.
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 | 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.
Liechtenstein is a small country in Europe with many castles. Clouds settled over Gutenberg Castle on the first day of winter.
The underlined part of the passage tells you about the cloud cover over Gutenberg Castle on a particular day. This passage describes the atmosphere at a certain plac... | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"sample B",
"neither; the samples have the same temperature"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Ted says that he would not be the person he is today were it not for his childhood, which he describes as Dickensian. | [
"a poem",
"literature"
] | 1 | 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 Dickensian is literature.
The works of British author Charles Dickens often featured characters struggling to survive in settings such as debtors' prisons and orphanages.
The allusion Dickensian means harsh or poverty-stricken. | |
Not supported with pagination yet | Is this a run-on sentence?
In 1227, Genghis Khan, the Mongol leader who conquered much of Central Asia, died he was buried in an unmarked grave, and its location remains a mystery today. | [
"no",
"yes"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify run-on sentences | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A run-on sentence is formed when two sentences are run together, joined by just a comma or by no punctuation at all. If only a comma is used, the run-on is called a comma s... | This is a run-on sentence. It is formed from two sentences run together, joined without punctuation.
In 1227, Genghis Khan, the Mongol leader who conquered much of Central Asia, died he was buried in an unmarked grave, and its location remains a mystery today.
Here is one way to fix the run-on sentence:
In 1227, Genghi... | |
Not supported with pagination yet | Which of the following parts does an animal cell have? | [
"cytoplasm",
"cell wall"
] | 0 | closed choice | grade4 | natural science | biology | Cells | Compare plant and animal cells | Plant and animal cells have many parts in common, but not all. This table shows some of their similarities and differences.
Cell part | Plant cell | Animal cell
cell wall | yes | no
cell membrane | yes | yes
cytoplasm | yes | yes
mitochondria | yes | yes
vacuole | yes | yes
chloroplasts | yes | no
nucleus | yes | yes
c... | ||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
salad - simple | [
"shriek",
"steam"
] | 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 shriek is between the guide words salad - simple, it would be found on that page. | |
Not supported with pagination yet | What do these two changes have in common?
a slice of banana turning brown
burning a marshmallow over a campfire | [
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are caused by heating.",
"Both are chemical changes."
] | 3 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
A slice of banana turning brown is a chemical change. The part of the banana in contact with the air reacts with oxygen and turns into a different type of matter.
Burning a marshmallow is a chemical change. The heat from the fire causes the type of matter in the marshmallow to change. T... | |
What is the capital of Kentucky? | [
"Frankfort",
"Louisville",
"Austin",
"Charleston"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | |||
Which of these states is farthest west? | [
"Rhode Island",
"California",
"Alabama",
"Montana"
] | 1 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. California is farthest west. | ||
Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 0 | The diagram below is a model of two solutions. Each green ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... | |
Which country is highlighted? | [
"Saint Lucia",
"Barbados",
"Saint Vincent and the Grenadines",
"Grenada"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Barbados. | |||
Not supported with pagination yet | What do these two changes have in common?
burning food on a stove
water boiling on a stove | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 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.
Food burning on a stove is a chemical change. The type of matter in the food changes. The food turns black and gives off smoke.
Water boiling on the stove is a change of state. So, it is a physical change. The liquid changes into a gas, but a different type of matter is not formed.
Step... | |
Not supported with pagination yet | Select the action that doesn't belong. | [
"roast",
"boil",
"bake",
"wash"
] | 3 | closed choice | grade3 | language science | vocabulary | Categories | Select the words that don't belong | Wash doesn't belong.
Bake, roast, and boil all name ways to cook things. | ||
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"A computer processor is made in a factory. It is a solid.",
"Native copper is a solid. It is a pure substance.",
"Magnetite is a solid. It is a pure substance."
] | 0 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Native copper is a mineral.
A computer processor is made in a factory. But all minerals are formed in nature.
So, a computer processor is not a mineral.
Magnetite is a mineral. | |
What is the capital of Kentucky? | [
"Frankfort",
"Columbia",
"Oklahoma City",
"Detroit"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Frankfort is the capital of Kentucky. | |||
Not supported with pagination yet | Based on this information, what is Felicia's genotype for the ear type gene? | [
"straight ears",
"ee"
] | 1 | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele E is for curled ears, and the allele e is for straight ears.
Felicia, an American curl cat from this group, has straight ears. Felicia has two all... | closed choice | grade8 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's genotype for a gene is its combination of alleles for that gene. Felicia has two alleles for straight ears (e). So, Felicia's genotype for the ear type gene is ee. |
Not supported with pagination yet | Which sentence states a fact? | [
"The region north of the Arctic Circle is the most miserable place on earth.",
"North of the Arctic Circle, there are days when the sun does not completely rise or set."
] | 1 | 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.
North of the Arctic Circle, there are days when the sun does not completely rise or set.
It can be proved by looking up information about the Arctic Circle.
The first sentence states an opinion.
The region north of the Arctic Circle is the most miserable place on earth.
Most miserable... | |
Not supported with pagination yet | Which figure of speech is used in this text?
After Gabrielle cooked and served a scrumptious dinner, Dad boasted that she is the Julia Child of our family. | [
"allusion",
"pun"
] | 0 | closed choice | grade7 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses an allusion, a brief reference to someone or something well known.
Julia Child alludes to the famous chef who is known for popularizing French cuisine in the United States. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, and the particles in both samples have the same average speed. So, the particles in both samples have the same average kinetic energy.
Because the particles in both samples have the same average kinetic energy, the samples must have the same temperature. | |
Which country is highlighted? | [
"Nauru",
"the Federated States of Micronesia",
"Solomon Islands",
"the Marshall Islands"
] | 3 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Marshall Islands.
Does the Marshall Islands have any territorial disputes?
The Marshall Islands claims to own Wake Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States claimed Wake Island in 1899 and has... | |||
Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the right than to the left",
"to the left than to the right"
] | 1 | The diagram below shows a solution with one solute. Each solute particle is represented by a green ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time ... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there was 1 solute particle on the left side of the membrane and 5 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there w... | |
Which animal is also adapted for flight? | [
"brahminy kite",
"chital"
] | 0 | Flamingos fly long distances every year in search of food and places to nest. They have wings instead of arms. Flamingos are adapted for flight.
Figure: flamingo. | 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.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the flamingo.
The flamingo has large, powerful wings. It is adapted for flight. Long, powerful wings help the flamingo travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The brahminy kite has long, powerful wings. It is adapted for flight.
The... | |
Not supported with pagination yet | Which professional objective on a résumé is more formal? | [
"I want a job where I can travel a lot and hopefully manage people someday.",
"I seek a position with opportunities for travel and advancement."
] | 1 | 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 second professional objective on a résumé is more formal. It uses more elevated language (I seek a position, opportunities for travel and advancement). The other professional objective uses casual language (want a job, a lot) and sounds more conversational. | |
Not supported with pagination yet | What information supports the conclusion that Riley inherited this trait? | [
"Riley and her mother both wear their hair in braids.",
"Riley's parents have red hair. They passed down this trait to Riley."
] | 1 | Read the description of a trait.
Riley has red hair. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | Based on this information, what is Squeaky's phenotype for the albinism trait? | [
"having albinism",
"not having albinism"
] | 1 | This passage describes the albinism trait in rats:
In a group of rats, some individuals have albinism and others do not. In this group, the gene for the albinism trait has two alleles. The allele for having albinism (a) is recessive to the allele for not having albinism (A).
Squeaky is a rat from this group. Squeaky h... | 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 Squeaky's phenotype for the albinism trait. First, consider the alleles in Squeaky's genotype for the albinism gene. Then, decide whether these alleles are dominant or recessive.
The allele for having albinism (a) is recessive to the allele for not having albinism (A). This means A is a dominant a... |
Not supported with pagination yet | What is the mass of an elephant? | [
"6,690 grams",
"6,690 kilograms"
] | 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 elephant is 6,690 kilograms.
6,690 grams is too light. |
Which is the main persuasive appeal used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 2 | 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 pathos, or emotion. It links the airline to feelings of luxury and relaxation. | ||
Is the following statement about our solar system true or false?
The volume of Uranus is less than ten times the volume of Neptune. | [
"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 determine if this statement is true, calculate the value of ten times the volume of Neptune.
Then compare the result to the volume of Uranus. The volume of Uranus is 6.83 x 10^13 km^3, which is less than 6.25 x 10^14 km^3. So, the volume of Uranus is less than ten times the volume of Neptune. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Dr. Patterson is unhappy with her new assistant because simple tasks, like fetching coffee, take him years to finish. | [
"euphemism",
"hyperbole"
] | 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 hyperbole, an obvious exaggeration that is not meant to be taken literally.
Take him years to finish is an exaggeration, since it probably does not take him entire years to fetch coffee. | |
Not supported with pagination yet | What does the allusion in this text suggest?
When Pam claimed she had loaded the dishwasher before turning on Dancing with the Stars, her mother replied, "Your nose is growing!" | [
"Pam was lying.",
"Pam was trustworthy."
] | 0 | closed choice | grade6 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked. | The text uses an allusion, a brief reference to someone or something well known.
The allusion nose is growing suggests that Pam was lying. In the story of Pinocchio, when Pinocchio lies, his nose grows longer. | |
Which property do these two objects have in common? | [
"sour",
"salty"
] | 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 lemon has a sour taste. Both objects are sour.
Potato chips have a salty taste. The lime is not salty.
The property that both objects have in common is sour. | |
Select the organism in the same genus as the Amazon tree boa. | [
"Halichoeres hortulanus",
"Chroicocephalus ridibundus",
"Corallus hortulanus"
] | 2 | This organism is an Amazon tree boa. Its scientific name is Corallus hortulanus. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An Amazon tree boa's scientific name is Corallus hortulanus. The first word of its scientific name is Corallus.
Chroicocephalus ridibundus is in the genus Chroicocephalus. The first word of its scientific name is Chroicocephalus. So, Chroicocephalus ridibundus and Corallus hortulanus are not in the same genus.
This org... | |
Not supported with pagination yet | Select the animal. | [
"Lynx eat animals.",
"Walnut trees have many green leaves."
] | 0 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | A walnut tree is a plant. It has many green leaves.
People pick and eat walnuts from walnut trees. Walnuts are the tree's seeds!
A lynx is an animal. It eats animals.
Lynx have padded feet to help them walk on snow. | |
Which of these colonies was in New England? | [
"South Carolina",
"New Hampshire",
"New York"
] | 1 | In the following questions, you will learn about the origins of the New England Colonies. The New England Colonies made up the northern part of the Thirteen Colonies, which were ruled by Great Britain in the 1600s and 1700s.
The population of New England included Native American groups, enslaved and free people of Afri... | closed choice | grade7 | social science | us-history | Colonial America | New England Colonies: founding and government | Look at the legend on the map.
The colonies are shaded by region, and the New England Colonies are all shaded the same color. They include these colonies:
The rest of the Thirteen Colonies were part of the Middle Colonies or the Southern Colonies. | ||
Which property matches this object? | [
"stretchy",
"shiny"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A shiny object reflects a lot of light. The gold nugget is shiny.
A stretchy object gets longer when you pull on it. The gold nugget is not stretchy. | |
Is magnetite a mineral? | [
"no",
"yes"
] | 1 | Magnetite has the following properties:
pure substance
fixed crystal structure
solid
found in nature
not made by living things | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Magnetite has all the properties of a mineral. So, magnetite is a mineral. | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
Where Jack lives, winter is the rainiest season of the year. | [
"weather",
"climate"
] | 1 | closed choice | grade5 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the text carefully.
Where Jack lives, winter is the rainiest season of the year.
This passage tells you about the usual precipitation where Jack lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate. | |
Identify the question that Lindsey's experiment can best answer. | [
"Do more tomato seedlings grow when they are planted in soil with fertilizer compared to soil without fertilizer?",
"Does the humidity level where tomato seeds are planted affect the number of tomato seedlings that grow?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Lindsey planted 25 tomato seeds one-half inch below the soil surface in each of six pots. Lindsey added an equal amount of fertilizer to three of the six pots. She placed the pots in a plant growth chamber where all the... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Complete the statement.
During this chemical reaction, the car engine becomes (). | [
"colder",
"warmer"
] | 1 | When a chemical reaction absorbs or releases thermal energy, the reaction causes a change in temperature. Read the passage about a chemical reaction that absorbs or releases thermal energy. Then, follow the instructions below.
The gasoline used in cars today is a mixture of over 1,000 different substances. One of these... | closed choice | grade6 | natural science | chemistry | Chemical reactions | Describe energy changes in chemical reactions | During a chemical reaction, thermal energy is absorbed or released as heat. This transfer of thermal energy changes the temperature of the reaction's surroundings. The surroundings are everything around the reaction, such as the solution that the reaction takes place in or the air nearby.
Some reactions release thermal... | To determine whether the car engine becomes warmer or colder, look for the text that describes the movement of thermal energy during the reaction.The gasoline used in cars today is a mixture of over 1,000 different substances. One of these substances is isooctane (C8 H18). In a car engine, isooctane reacts with oxygen ... |
Select the organism in the same genus as the bighorn sheep. | [
"Ovis orientalis",
"Macropus agilis",
"Alouatta palliata"
] | 0 | This organism is a bighorn sheep. Its scientific name is Ovis canadensis. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A bighorn sheep's scientific name is Ovis canadensis. The first word of its scientific name is Ovis.
Ovis orientalis is in the genus Ovis. The first word of its scientific name is Ovis. So, Ovis orientalis and Ovis canadensis are in the same genus.
Alouatta palliata is in the genus Alouatta. The first word of its scien... | |
Not supported with pagination yet | Complete the sentence.
In an election, people choose their representatives and leaders by (). | [
"passing laws",
"voting",
"giving speeches",
"drawing names randomly"
] | 1 | closed choice | grade3 | social science | civics | Government | Presidential elections | In an election, people choose representatives and leaders by voting. When people vote, they officially make their choice in an important decision. Each person's choice is called a vote. Votes are counted up to decide who wins the election.
In the United States, people use elections to choose many of the country's most ... | ||
Which of these states is farthest east? | [
"Colorado",
"Texas",
"Oregon",
"Wisconsin"
] | 3 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Wisconsin is farthest east. | ||
Which continent is highlighted? | [
"North America",
"South America",
"Asia",
"Antarctica"
] | 3 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Antarctica. | ||
Is bronze a mineral? | [
"yes",
"no"
] | 1 | Bronze has the following properties:
no fixed crystal structure
made in a factory
mixture of copper and tin
solid | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Bronze does not have all the properties of a mineral. So, bronze is not a mineral. | |
Identify the question that Olivia and Jayce's experiment can best answer. | [
"Does Olivia's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?",
"Does Olivia's snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Olivia applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. Then, she removed the wax and rode the snowboard straight down the hill again. She repeated the rides four mo... | 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... | ||
Which month is the warmest in Mexico City? | [
"June and July",
"October and November",
"April and May"
] | 2 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used t... | To describe the average temperature trends in Mexico City, look at the graph.
Choice "Apr" is incorrect.
Choice "May" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
The average temperatures in April and May are around 18°C. These months have the... | |
Which solution has a higher concentration of yellow particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | 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 yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... | |
Which of the following best describes an ecosystem in a California tide pool? | [
"a school of fluffy sculpins",
"the giant green anemones, the ochre sea stars, and the red octopuses",
"the rocks, the salt water, and the California mussels"
] | 2 | Read the passage. Then answer the question below.
In a tide pool in California, California mussels live up high on the rocks. They are only submerged during high tide, when the water level is the highest.
Giant green anemones and ochre sea stars live lower in the tide pool. They are submerged during high tide but expo... | closed choice | grade7 | natural science | biology | Ecosystems | Describe populations, communities, and ecosystems | In an environment, organisms interact with each other and with their nonliving surroundings. To help describe these interactions, ecologists use specific terms for different types of groups.
A single organism is an individual. Individuals of the same species that live in the same place are part of a population.
Multipl... | ||
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | 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 north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Which of these states is farthest east? | [
"Alabama",
"Illinois",
"Arizona",
"Nebraska"
] | 0 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Alabama is farthest east. | ||
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"neither; the samples have the same temperature",
"sample B"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, and the particles in both samples have the same average speed. So, the particles in both samples have the same average kinetic energy.
Because the particles in both samples have the same average kinetic energy, the samples must have the same temperature. | |
Which of these states is farthest east? | [
"Mississippi",
"California",
"North Carolina",
"North Dakota"
] | 2 | 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 east arrow is pointing. North Carolina is farthest east. | ||
Not supported with pagination yet | Which is a compound sentence? | [
"Coffee beans are the seeds of the coffee plant.",
"The airport is closed, so we will have to take the train."
] | 1 | closed choice | grade3 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The second sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction so.
The airport is closed, so we will have to take the train. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Despite having won multiple teaching awards over the course of his career, the professor was best known for his stentorian voice. | [
"the Bible",
"Greek mythology"
] | 1 | closed choice | grade12 | 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.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion stentorian is Greek mythology.
In Greek mythology, Stentor was a herald who could shout as loudly as fifty men.
The allusion stentorian means resounding. | |
Not supported with pagination yet | What kind of sentence is this?
Do you usually prefer your orange juice with pulp or without pulp? | [
"interrogative",
"declarative",
"imperative"
] | 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 asks something, and it ends with a question mark. It is an interrogative sentence. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The broken-down car () oil onto the concrete driveway. | [
"bled",
"leaked"
] | 0 | closed choice | grade10 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the word bled. It describes the broken-down car as if it were a person who was bleeding. | |
Not supported with pagination yet | Would you find the word velvet on a dictionary page with the following guide words?
vanish - victory | [
"yes",
"no"
] | 0 | yes or no | grade2 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since velvet is between the guide words vanish - victory, it would be found on that page. | |
Not supported with pagination yet | Which figure of speech is used in this text?
When Ashley first joined the track team, she was afraid of jumping, but she got over that hurdle. | [
"pun",
"verbal irony"
] | 0 | closed choice | grade6 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses a pun, a word or phrase that humorously suggests more than one meaning.
Hurdle refers to an obstacle that one must overcome. It also refers to an object that a runner jumps over. | |
Not supported with pagination yet | Complete the sentence.
Filtering air to remove dust and pollen 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... | Filtering air to remove dust and pollen is a physical change. The air flows through the filter, and the pollen and dust stay behind. This separates the mixture of air, pollen, and dust. But separating a mixture does not form a different type of matter. | |
Not supported with pagination yet | Using only these supplies, which question can Mariana investigate with an experiment? | [
"Do sunflowers grow taller if they are planted in planter boxes or in pots?",
"Do sunflowers grow bigger in sunny planter boxes or in shady planter boxes?",
"Which type of sunflower grows more leaves?"
] | 1 | Mariana wants to grow sunflowers in her backyard garden. She notices that some sunflowers grow much taller than others. She is curious about what factors affect how sunflowers grow. So, she decides to design an experiment. She has the following supplies available:
seeds from one type of sunflower
soil
one wooden plante... | 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 property matches this object? | [
"sour",
"salty"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A lemon has a sour taste. The pretzel is not sour.
Potato chips have a salty taste. The pretzel is salty. | |
Not supported with pagination yet | Which correctly shows the title of a song? | [
"\"Eight Days a Week\"",
"\"eight Days a Week\""
] | 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 a is not important, so it should not be capitalized.
The correct title is "Eight Days a Week." | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 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 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. | |
What is the capital of Nevada? | [
"Juneau",
"Las Vegas",
"Carson City",
"Denver"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | |||
What is the capital of Montana? | [
"Santa Fe",
"Carson City",
"Harrisburg",
"Helena"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | |||
Select the organism in the same genus as the Canada lynx. | [
"Lynx lynx",
"Castor canadensis",
"Camellia japonica"
] | 0 | This organism is a Canada lynx. Its scientific name is Lynx canadensis. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Canada lynx's scientific name is Lynx canadensis. The first word of its scientific name is Lynx.
Castor canadensis and Lynx canadensis are not in the same genus.
These organisms are not in the same genus, but part of their scientific names is the same. Castor canadensis and Lynx canadensis have the same species name ... | |
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 | 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. | 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 | Select the invertebrate. | [
"clownfish",
"fireworm",
"macaw",
"common snapping turtle"
] | 1 | Hint: Insects, spiders, and worms are invertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A macaw is a bird. Like other birds, a macaw is a vertebrate. It has a backbone.
A clownfish is a fish. Like other fish, a clownfish is a vertebrate. It has a backbone.
A fireworm is a worm. Like other worms, a fireworm is an invertebrate. It does not have a backbone. It has a soft body.
A common snapping turtle is a r... |
Not supported with pagination yet | Which logical fallacy is used in the text?
How could I possibly have time to wash the dishes when so much carbon dioxide is being spewed into the atmosphere on a daily basis? | [
"red herring: the use of a completely unrelated topic or idea",
"false dichotomy: an argument that presents only two choices when more options exist"
] | 0 | closed choice | grade8 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that carbon dioxide entering the atmosphere somehow prevents the speaker from washing the dishes. However, these two ideas aren't related. This illustrates a type of logical fallacy known as a red herring. | |
What is the capital of Colorado? | [
"Boulder",
"Carson City",
"Denver",
"Helena"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Denver is the capital of Colorado. | |||
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Grandma Carly,",
"Dear grandma Carly,"
] | 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 second greeting is correct:
Its first word is capitalized, and it ends with a comma. Grandma Carly is capitalized because it is a proper noun. | |
Which statement describes the Great Basin Desert ecosystem? | [
"It has warm summers and mild winters.",
"It has long, cold winters.",
"It has a medium amount of rain."
] | 1 | Figure: Great Basin Desert.
The Great Basin Desert is a cold desert ecosystem in the western United States that covers much of Nevada. This desert also covers parts of Utah, California, and Idaho. | 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 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 following statement describes the Great Basin Desert ecosystem: a small amount of rain or snow, dry, thin soil, and long, cold winters. It has long, cold winter... | |
What is the name of the colony shown? | [
"New Jersey",
"New York",
"Iowa",
"Florida"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | |||
Which property matches this object? | [
"scratchy",
"blue"
] | 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 scratchy object is rough and itchy against your skin. The log is scratchy.
Blue is a color.
This color is blue. The log is not blue. | |
Not supported with pagination yet | What information supports the conclusion that Jeffrey inherited this trait? | [
"Jeffrey likes to wear a blue sweater to match his blue eyes.",
"Jeffrey's mother has blue eyes. She passed this trait down to Jeffrey."
] | 1 | Read the description of a trait.
Jeffrey has blue eyes. | 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... | |
Complete the statement.
Sodium bromide is (). | [
"a compound",
"an elementary substance"
] | 0 | The model below represents sodium bromide. Sodium bromide can be used to kill bacteria in swimming pools. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether sodium bromide is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chem... | |
Which is this organism's common name? | [
"curlyhair tarantula",
"Brachypelma albopilosum"
] | 0 | This organism is Brachypelma albopilosum. It is also called a curlyhair tarantula. | closed choice | grade8 | 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,... | Brachypelma albopilosum is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Brachypelma albopilosum is the organism's scientific name. So, you know that curlyhair tarantula is the common name. | |
What type of rock is siltstone? | [
"metamorphic",
"sedimentary"
] | 1 | Siltstone is a type of rock. It forms from silt, a fine sediment with grains that are smaller than sand. Siltstone forms when layers of silt are pressed together to form rock. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Siltstone is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Silt is a type of sediment. It is found in places like river valleys. Sediments like silt can build up in layers. Over time, the top layers press down on the bottom layers. Sedimentary rock forms when the bottom layers are ... | |
What is the name of the colony shown? | [
"New York",
"Massachusetts",
"Mississippi",
"New Jersey"
] | 3 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Jersey. | |||
What is the capital of Arkansas? | [
"Little Rock",
"Fayetteville",
"Tulsa",
"Atlanta"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. |
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.