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Lecture: 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.
Question: Select the mammal below.
Hint: Mammals have hair or fur and feed their... | 1B | |
Lecture: 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 oth... | 2C | |
Lecture: An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Question: Which property matches this object?
Hint: Select the better answer.
Choices:
A. scratchy
B. shiny
Answer with the letter. | 1B | |
Lecture: Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals.
Q... | 1B | |
Lecture: 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 plan... | 1B | |
Question: What can Stefan and Bruce trade to each get what they want?
Hint: Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Stefan and Bruce open their lunch boxes in the school... | 2C | |
Lecture: 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 ... | 0A | |
Lecture: A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces.
Question: As the wind pushes on the kite, what is the direction of the opposing force?
Hint: The text below describes ... | 1B | |
Lecture: 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 th... | 2C | |
Lecture: 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 plan... | 1B | |
Lecture: An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there
Question: Which better describes ... | 0A | |
Question: What is the capital of Idaho?
Choices:
A. Boise
B. Helena
C. Louisville
D. Salem
Answer with the letter. | 0A | |
Lecture: 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 orga... | 0A | |
Lecture: 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 pa... | 1B | |
Lecture: 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... | 1B | |
Question: What is the capital of Wyoming?
Choices:
A. Denver
B. Laramie
C. Dover
D. Cheyenne
Answer with the letter. | 3D | |
Question: Complete the sentence.
The word "antebellum" means ().
Hint: The time period in United States history between 1820 and 1861 is often called the antebellum period. During the antebellum period, the North and South became more divided. In the following questions, you learn more about the changes that happened d... | 3D | |
Question: What is the capital of Minnesota?
Choices:
A. Minneapolis
B. Lincoln
C. Saint Paul
D. Topeka
Answer with the letter. | 2C | |
Lecture: 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 ... | 1B | |
Lecture: 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 th... | 1B | |
Question: What is the capital of New Jersey?
Choices:
A. Trenton
B. Providence
C. Baton Rouge
D. Burlington
Answer with the letter. | 0A | |
Question: What can Francesca and Desmond trade to each get what they want?
Hint: Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Francesca and Desmond open their lunch boxes in ... | 2C | |
Lecture: 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 ... | 0A | |
Lecture: 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 pa... | 0A | |
Question: What is the capital of West Virginia?
Choices:
A. Biloxi
B. Kansas City
C. Charleston
D. Huntington
Answer with the letter. | 2C | |
Lecture: 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... | 1B | |
Lecture: 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... | 0A | |
Lecture: A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling.
Question: Which type of force from the man's hand opens the car door?
Hint: A man gets into his car. His hand ap... | 1B | |
Lecture: Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this que... | 1B | |
Question: Which of the following statements describess living in an independent city-state?
Hint: Athens was one of the most powerful independent city-states in ancient Greece. Look at the definitions below. Then answer the question.
Choices:
A. My city rules itself and is not part of a larger country.
B. All the decis... | 0A | |
Lecture: 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 oth... | 2C | |
Question: What is the capital of Kansas?
Choices:
A. Montgomery
B. Billings
C. Kansas City
D. Topeka
Answer with the letter. | 3D | |
Lecture: 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 ... | 0A | |
Lecture: A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Question: Which material is this bowl made of?
Choices:
A. rock
B. glass
Answer with the letter. | 1B | |
Lecture: Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical ... | 3D | |
Lecture: Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean.
Question: Which ocean is highlighted?
Choices:
A. the Arctic Ocean
B. the Pacific Ocean
C. the Southern Ocean
D. the Indian Ocean
Answer with the letter. | 3D | |
Question: What is the capital of Utah?
Choices:
A. Salt Lake City
B. Fairbanks
C. Provo
D. Boise
Answer with the letter. | 0A | |
Lecture: 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 ma... | 3D | |
Question: What is the capital of New Jersey?
Choices:
A. Knoxville
B. Jersey City
C. Trenton
D. Dover
Answer with the letter. | 2C | |
Question: What is the capital of Massachusetts?
Choices:
A. Boston
B. Cambridge
C. Providence
D. Reno
Answer with the letter. | 0A | |
Lecture: A continent is one of the major land masses on the earth. Most people say there are seven continents.
Question: Which continent is highlighted?
Choices:
A. South America
B. Antarctica
C. Africa
D. Europe
Answer with the letter. | 3D | |
Lecture: 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 t... | 1B | |
Lecture: A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling.
Question: Which type of force from the bulldozer clears the path?
Hint: A bulldozer clears a path for a new road... | 0A | |
Lecture: Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of... | 1B | |
Question: What can Brennan and Ed trade to each get what they want?
Hint: Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Brennan and Ed open their lunch boxes in the school caf... | 0A | |
Lecture: 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... | 2C | |
Question: What is the capital of West Virginia?
Choices:
A. Louisville
B. Charleston
C. Baton Rouge
D. Huntington
Answer with the letter. | 1B | |
Lecture: 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 ... | 2C | |
Lecture: 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... | 2C | |
Lecture: In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table ... | 0A | |
Lecture: 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 ... | 0A | |
Lecture: 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 th... | 0A | |
Lecture: 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 th... | 2C | |
Question: What is the capital of Alaska?
Choices:
A. Juneau
B. Salem
C. Springfield
D. Anchorage
Answer with the letter. | 0A | |
Question: Based on the text, how are fruit bats different from most other animals?
Hint: Read the text about bats.
Several kinds of animals "talk" to one another in the wild. Dolphins whistle, birds sing, and wolves howl. In recent years, researchers have paid more attention to animal "languages," and they have made so... | 0A | |
Lecture: 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... | 2C | |
Lecture: The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a divergent boundary, two plates are moving away from each other.
A... | 0A | |
Question: What is the capital of Wyoming?
Choices:
A. Lincoln
B. Cheyenne
C. Frankfort
D. Salt Lake City
Answer with the letter. | 1B | |
Lecture: A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers.
Question: Which i in row B?
C... | 0A | |
Lecture: 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 orga... | 2C | |
Lecture: An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat... | 0A | |
Question: What is the capital of Colorado?
Choices:
A. Olympia
B. Boulder
C. Denver
D. Colorado Springs
Answer with the letter. | 2C | |
Question: What is the capital of Rhode Island?
Choices:
A. Georgetown
B. Providence
C. Jersey City
D. Tulsa
Answer with the letter. | 1B | |
Lecture: 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 t... | 0A | |
Question: What is the capital of Washington?
Choices:
A. Frankfort
B. Cheyenne
C. Honolulu
D. Olympia
Answer with the letter. | 3D | |
Question: What is the capital of Oklahoma?
Choices:
A. Oklahoma City
B. Providence
C. Charlotte
D. Richmond
Answer with the letter. | 0A | |
Lecture: 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 p... | 1B | |
Question: What is the capital of Utah?
Choices:
A. Helena
B. Salt Lake City
C. Tucson
D. Missoula
Answer with the letter. | 1B | |
Question: What is the name of the colony shown?
Choices:
A. Indiana
B. Georgia
C. Rhode Island
D. North Carolina
Answer with the letter. | 1B | |
Lecture: A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decrease... | 0A | |
Question: What is the capital of North Carolina?
Choices:
A. Savannah
B. Springfield
C. Richmond
D. Raleigh
Answer with the letter. | 3D | |
Lecture: 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 ma... | 0A | |
Lecture: Many plants have flowers. These plants can use their flowers to reproduce, or make new plants like themselves. How do plants use their flowers to reproduce?
First, the male part of the flower makes a powder called pollen. Animals, wind, or water can move pollen. Pollination is what happens when pollen is moved... | 2C | |
Lecture: 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 pa... | 0A | |
Lecture: 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... | 2C | |
Question: What is the capital of Utah?
Choices:
A. Salt Lake City
B. Sacramento
C. Carson City
D. Provo
Answer with the letter. | 0A | |
Lecture: 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... | 0A | |
Lecture: A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling.
Question: What is the direction of this push?
Hint: A boy shops for groceries. He uses a fo... | 0A | |
Question: What is the capital of West Virginia?
Choices:
A. Raleigh
B. Cambridge
C. Huntington
D. Charleston
Answer with the letter. | 3D | |
Question: What is the capital of Utah?
Choices:
A. Provo
B. Salt Lake City
C. Trenton
D. Olympia
Answer with the letter. | 1B | |
Question: What is the capital of Arizona?
Choices:
A. Salem
B. Phoenix
C. Portland
D. Tucson
Answer with the letter. | 1B | |
Lecture: 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 ... | 2C | |
Lecture: Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of... | 0A | |
Lecture: 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 mig... | 0A | |
Lecture: Gymnosperms are plants that have seeds but not flowers. Conifers are a type of a gymnosperm. Instead of flowers, conifers have cones. Conifers use their cones for sexual reproduction.
Most conifer trees have both male and female cones. The male cones produce pollen. The female cones produce eggs and a sticky s... | 0A | |
Lecture: A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling.
Question: What is the direction of this pull?
Hint: A woman unplugs a power cord. She uses ... | 0A | |
Lecture: 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 th... | 1B | |
Question: What is the name of the colony shown?
Choices:
A. Virginia
B. South Carolina
C. New York
D. Vermont
Answer with the letter. | 2C | |
Lecture: 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 th... | 0A | |
Lecture: A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling.
Question: Which type of force from the child's finger presses the button?
Hint: A child presses a button in an e... | 0A | |
Lecture: A continent is one of the seven largest areas of land on earth.
Question: Which continent is highlighted?
Choices:
A. Africa
B. Asia
C. Europe
Answer with the letter. | 2C | |
Lecture: 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.
Question: Select the bird below.
Hint: Birds have feathers, two wings, and a bea... | 1B | |
Lecture: 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 ... | 1B | |
Lecture: 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 ... | 0A | |
Question: What is the name of the colony shown?
Choices:
A. Tennessee
B. Washington, D.C.
C. Maryland
D. Georgia
Answer with the letter. | 2C | |
Lecture: A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood.
Question: Which material is these scissors made of?
Choices:
A... | 1B | |
Lecture: 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... | 1B | |
Lecture: 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... | 0A | |
Question: What is the name of the colony shown?
Choices:
A. Georgia
B. Maryland
C. Maine
D. North Carolina
Answer with the letter. | 0A | |
Question: What is the capital of West Virginia?
Choices:
A. Laramie
B. Charleston
C. Tallahassee
D. Columbus
Answer with the letter. | 1B |
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