id: 10182
lecture:
question: What can Eli and Pedro trade to each get what they want?
choice: (A) Pedro can trade his almonds for Eli's tomatoes. (B) Pedro can trade his broccoli for Eli's oranges. (C) Eli can trade his tomatoes for Pedro's broccoli. (D) Eli can trade his tomatoes for Pedro's carrots.
context: 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. Eli and Pedro open their lunch boxes in the school cafeteria. Neither Eli nor Pedro got everything that they wanted. The table below shows which items they each wanted: Look at the images of their lunches. Then answer the question below. Eli's lunch Pedro's lunch
answer: C
rationale: To answer this question, I will first analyze the contents of each lunch box and identify the items that each person wants. Then, I will consider the possible trades that can be made between the two lunches to help each person get what they want. Eli's lunch: - Hot dog - Tomato - Broccoli - Carrots - Almonds Pedro's lunch: - Hot dog - Tomato - Carrots - Oranges - Almonds Based on the contents of each lunch, it is clear that both Eli and Pedro want tomatoes and almonds. To help each person get what they want, they can make a trade. Option (A) Pedro can trade his almonds for Eli's tomatoes. This trade would give Pedro the tomatoes he wants and give Eli the almonds he wants. Option (C) Eli can trade his tomatoes for Pedro's broccoli. This trade would give Eli the broccoli he wants and give Pedro the tomatoes he wants. Therefore, the correct answer is (A) Pedro can trade his almonds for Eli's tomatoes.
generated_skill: The specific skill required to solve this question is the ability to analyze and compare the contents of two lunch boxes and identify the items that each person wants. This skill involves understanding the concept of trade and barter, as well as the ability to make logical connections between the items in the lunch boxes and the possible trades that can be made to help each person get what they want. Additionally, the skill involves considering the preferences and needs of the individuals involved, as well as the feasibility and fairness of the proposed trades. This requires a good understanding of the value of the items in the lunch boxes and the ability to make decisions based on that understanding. Overall, the skill required to solve this question is a combination of critical thinking, problem-solving, and decision-making abilities, all of which are essential for making informed and effective choices in various situations.
solution: Look at the table and images. Eli wants broccoli. Pedro wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want.
skill: Trade and specialization
id: 10368
lecture:
question: What is the capital of West Virginia?
choice: (A) Huntington (B) Charleston (C) Athens (D) Phoenix
context: N/A
answer: B
rationale: To determine the capital of West Virginia, I would first need to identify the location of West Virginia on the map. Since the map is green and white, it is likely that the colors represent different states or regions. I would then look for the state of West Virginia on the map and identify its borders. Once I have located West Virginia, I can then look for its capital city. In this case, the capital city of West Virginia is B. Charleston.
generated_skill: The specific skill required to solve the question is geographical knowledge and map reading. The ability to identify the location of West Virginia on the map and recognize its borders is crucial to determining its capital city. This skill involves understanding the layout of the United States and being able to identify individual states and their respective capital cities. Additionally, the ability to read and interpret a map is essential to accurately locate and identify specific locations.
solution: Charleston is the capital of West Virginia.
skill: Identify state capitals of the Southeast
id: 10652
lecture: Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.
question: What information supports the conclusion that Elijah acquired this trait?
choice: (A) Elijah learned to speak two languages in school. (B) Elijah's mother speaks one language.
context: Read the description of a trait. Elijah speaks two languages.
answer: A
rationale: To determine the information that supports the conclusion that Elijah acquired the trait of speaking two languages, we need to consider the difference between inherited and acquired traits. Inherited traits are passed down from biological parents through genes, while acquired traits are gained during a person's life and do not need to be learned. Since the statement given is that Elijah speaks two languages, we can conclude that he has acquired this trait. To determine the specific information that supports this conclusion, we need to consider the possible ways in which Elijah could have acquired the ability to speak two languages. One possible explanation is that Elijah learned to speak the two languages in school or through some other form of education. This would be an example of an acquired trait, as it is something that Elijah gained during his life and did not inherit from his biological parents. Another possible explanation is that Elijah's mother speaks one of the languages, and he learned it from her. This would also be an example of an acquired trait, as Elijah gained the ability to speak the language through observation and imitation rather than inheriting it from his mother through genes. Based on the information provided, we cannot determine which of these explanations is correct, but we can conclude that Elijah has acquired the ability to speak two languages, and that this trait was not inherited from his biological parents.
generated_skill: To solve this question, the specific skill required is the ability to differentiate between inherited and acquired traits, and to apply this understanding to the given information in order to determine the conclusion that supports the statement. This requires a good understanding of the concepts of inherited and acquired traits, as well as the ability to analyze and interpret information in order to draw logical conclusions. Additionally, the ability to think critically and to consider multiple possible explanations for a given situation is also important in order to arrive at the correct answer.
solution:
skill: Inherited and acquired traits: use evidence to support a statement
id: 11618
lecture:
question: Which term matches the picture?
choice: (A) osmosis (B) diffusion
context: Read the text. Molecules tend to move from areas of high concentration (more molecules for the space) to areas of low concentration (fewer molecules for the space) until they are evenly spaced. This movement is called diffusion. If you spray air freshener or perfume in a room, the perfume molecules will tend to move toward areas in which they are less concentrated, which is how the scent spreads. Osmosis is the term for a related but more specific kind of movement, the movement of certain kinds of molecules across semipermeable (semi-open) membranes. Many substances can't move across semipermeable cell membranes, but water molecules can. The process of pickling vegetables involves osmosis. Salt is more highly concentrated in salt water than it is in vegetables. For this reason, when a vegetable is placed in a jar of salt water, water molecules will pass via osmosis from areas of lower salt concentration (inside of the vegetable cells) to areas of higher salt concentration (the salt water surrounding the vegetables). This leaves the vegetables crispier.
answer: B
rationale: To determine the correct term that matches the picture, we need to analyze the image and understand the context provided. The image shows three bottles with blue liquid inside, and the context suggests that the movement of molecules is involved. First, we need to identify the type of molecules in the image. Since the bottles contain blue liquid, it is likely that the molecules are water molecules. Next, we need to determine the type of barrier present in the image. The bottles are made of glass, which is a semipermeable membrane. Based on the context, we know that osmosis is the term for the movement of certain kinds of molecules across semipermeable membranes. Therefore, the correct term that matches the picture is (A) osmosis.
generated_skill: To solve this question, the specific skill required is the ability to analyze and interpret visual information, as well as understanding basic scientific concepts. The image shows three bottles with blue liquid inside, and the context provides information about the movement of molecules. To determine the correct term that matches the picture, one needs to identify the type of molecules in the image, understand the properties of the barrier (in this case, the glass bottles), and apply the knowledge of osmosis and diffusion to the given context. This requires a combination of visual analysis, scientific understanding, and critical thinking skills.
solution: A drop of dye coloring all of the water in a container is an example of diffusion. Molecules spread throughout the water to areas where they are less concentrated.
skill: Determine the meaning of domain-specific words with pictures
id: 12631
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 that are composed of multiple chemical elements bonded together are compounds. Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element boron is B, and the atomic symbol for the chemical element chlorine is Cl. Scientists use different types of models to represent substances whose atoms are bonded in different ways. One type of model is a ball-and-stick model. The ball-and-stick model below represents a molecule of the compound boron trichloride. In a ball-and-stick model, the balls represent atoms, and the sticks represent bonds. Notice that the balls in the model above are not all the same color. Each color represents a different chemical element. The legend shows the color and the atomic symbol for each chemical element in the substance.
question: Look at the models of molecules below. Select the elementary substance.
choice: (A) trichlorofluoromethane (B) dichloromethane (C) nitrogen
context: N/A
answer: C
rationale: To answer this question, I will first analyze the image and identify the chemical elements present in the molecules. I will then use the atomic symbols to determine the elementary substance. 1. I will start by looking at the three molecules in the image. 2. I will identify the chemical elements present in each molecule by examining their atomic symbols. 3. I will compare the atomic symbols to determine if any of the molecules are composed of only one chemical element, which would make them elementary substances. 4. If I find an elementary substance, I will use the atomic symbol to identify the substance. 5. If I do not find an elementary substance, I will look for compounds that may be composed of multiple chemical elements bonded together. 6. I will use the atomic symbols to determine the composition of the compounds and identify them. 7. Finally, I will compare the atomic symbols of the identified substances to the options provided in the question to determine the correct answer.
generated_skill: To solve this question, the required skill is the ability to identify chemical elements and their atomic symbols, as well as the ability to recognize and differentiate between elementary substances and compounds. This skill involves understanding the basic principles of chemistry, such as the periodic table, atomic structure, and bonding patterns. Additionally, the ability to analyze and interpret information from visual representations, such as ball-and-stick models, is also essential for accurately identifying the chemical elements and their relationships in the molecules.
solution:
skill: Identify elementary substances and compounds using models
id: 13529
lecture: 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 life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
question: Is the following trait inherited or acquired? Adriana has five toes on each foot.
choice: (A) acquired (B) inherited
context: N/A
answer: B
rationale: To determine whether Adriana's five toes on each foot is an inherited or acquired trait, we need to consider how this trait is gained and passed down. 1. Inherited traits are passed down through families and children gain these traits from their parents. 2. Acquired traits are gained during a person's life and are not inherited from parents. Since Adriana's five toes on each foot is a physical characteristic that she was born with, it is likely that this trait is inherited. This means that Adriana gained this trait from her parents and it is not something that she learned or acquired during her life. Therefore, the answer is (B) inherited.
generated_skill: To solve this question, the specific skill required is the ability to differentiate between inherited and acquired traits. This involves understanding the different ways in which traits are gained and passed down, as well as the characteristics of each type of trait. In order to apply this skill to the given scenario, one must be able to analyze the information provided and determine whether the trait in question (five toes on each foot) is something that would be inherited or acquired. This requires a solid understanding of the concepts of inherited and acquired traits, as well as the ability to apply this knowledge to a specific scenario. Overall, the skill required to solve this question is the ability to think critically and apply knowledge of inherited and acquired traits to a specific scenario.
solution: Most humans are born with five toes on each foot. So, having five toes is an inherited trait.
skill: Identify inherited and acquired traits
id: 13938
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.
question: Select the bird below.
choice: (A) giraffe (B) loon (C) great white shark (D) leafy seadragon
context: Birds have feathers, two wings, and a beak. Birds are warm-blooded. Warm-blooded animals can control their body temperature. A penguin is an example of a bird.
answer: B
rationale: To answer the question, I would first identify the bird in the image. The bird is a penguin, which is a type of bird. Penguins are known for their distinctive black and white feathers, and they have two wings and a beak. They are also warm-blooded animals, which means they can control their body temperature. Next, I would consider the other options provided in the question: a giraffe, a loon, a great white shark, and a leafy seadragon. A giraffe is a mammal, not a bird, and it has a long neck and legs. A loon is a bird, but it does not have the distinctive black and white feathers of a penguin. A great white shark is a fish, and it has a predatory nature. A leafy seadragon is a type of fish, but it does not have the same characteristics as a penguin. Based on these observations, the correct answer is (A) giraffe, as it is the only option that is not a bird and does not have the same characteristics as a penguin.
generated_skill: The specific skill required to solve this question is the ability to identify and classify animals based on their characteristics. This involves understanding the differences between various animal groups and being able to recognize the unique features of each species. In this case, the skill required is to identify the bird in the image and compare it to the other options provided, using the characteristics of the penguin as a reference point. This involves visual observation, pattern recognition, and the ability to differentiate between similar but distinct species.
solution: A loon is a bird. It has feathers, two wings, and a beak. Loons usually live near lakes. They dive in the water to hunt for food. A great white shark is a fish. It lives underwater. It has fins, not limbs. Great white sharks can live for up to 70 years. A giraffe is a mammal. It has hair and feeds its young milk. Giraffes eat mostly leaves that are too high up for other animals to reach. A leafy seadragon is a fish. It lives underwater. It has fins, not limbs. A seadragon's body looks like a clump of seaweed. This helps the seadragon hide from its predators.
skill: Identify mammals, birds, fish, reptiles, and amphibians
id: 14065
lecture: Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy. For example, a shiny material reflects a lot of light. A fragile material breaks when you drop it.
question: Which is softer?
choice: (A) silk necktie (B) wood ruler
context: N/A
answer: A
rationale: To determine which of the two options is softer, we need to consider the material each object is made of and its properties. Option A: silk necktie * Material: Silk * Properties: Smooth, shiny, flexible, and lightweight Option B: wood ruler * Material: Wood * Properties: Hard, heavy, and rigid Based on the properties of the two materials, the silk necktie is softer than the wood ruler. The silk material is smooth, shiny, and flexible, while the wood material is hard, heavy, and rigid. Therefore, the silk necktie is the softer of the two options.
generated_skill: To solve this question, the specific skill required is the ability to analyze and compare the properties of different materials. This skill involves understanding the nature of materials, their properties, and how they interact with the environment. In this particular question, the skill involves identifying the material each object is made of (silk and wood) and then comparing their properties (smooth, shiny, flexible for silk and hard, heavy, rigid for wood) to determine which object is softer. This skill is important in various aspects of life, such as identifying suitable materials for a particular purpose, understanding how different materials interact with each other, and making informed decisions about the use and care of various objects.
solution: Soft is a property. A soft material changes shape when pressed or squeezed. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the silk necktie is softer. If you press on silk fabric, it will change shape.
skill: Compare properties of materials
id: 14111
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 easily. A short, thick beak might help a bird break through a seed's hard shell. Birds that eat similar food often have similar beaks.
question: Which bird's beak is also adapted to get nectar out of long flowers?
choice: (A) green violetear (B) northern mockingbird
context: Bronzy sunbirds live in the coastal and hilly areas of Southern Africa. The shape of the 's beak is adapted to get nectar out of long flowers. Figure: bronzy sunbird.
answer: A
rationale: To answer the question, I would first consider the context provided, which states that bronzy sunbirds have a beak adapted to get nectar out of long flowers. I would then think about the specific characteristics of the bronzy sunbird's beak that might be adapted for this purpose. Next, I would consider the options given, which are the green violetear and the northern mockingbird. I would think about the natural habitats and feeding behaviors of these birds to determine if they are likely to have beaks adapted for getting nectar out of long flowers. Finally, based on the information provided and my understanding of the birds' natural behaviors, I would choose the green violetear as the bird whose beak is adapted to get nectar out of long flowers.
generated_skill: To solve the question, the required skill is the ability to analyze and interpret information from the given context and options. This involves understanding the concept of adaptation and how it relates to the shape of a bird's beak. Additionally, it requires knowledge of the natural habitats and feeding behaviors of the given bird species to determine which one is most likely to have a beak adapted for getting nectar out of long flowers. Overall, the skill required to solve the question is critical thinking and the ability to apply knowledge to a specific problem.
solution: Look at the picture of the bronzy sunbird. The bronzy sunbird has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The bronzy sunbird's long, thin beak can reach deep into the flowers. Now look at each bird. Figure out which bird has a similar adaptation. The green violetear has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The northern mockingbird has a short, thin beak. Its beak is not adapted to get nectar out of long flowers. The northern mockingbird uses its beak to eat insects and earthworms.
skill: Animal adaptations: beaks, mouths, and necks
id: 14264
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 design a bridge for a windy location. She wants to make sure the bridge will not move too much in high wind. So, she builds a smaller prototype, or model, of a bridge. Then, she exposes the prototype to high winds and measures how much the bridge moves. First, identify what was tested. A test can examine one design, or it may compare multiple prototypes to each other. In the test described above, the engineer tested a prototype of a bridge in high wind. Then, identify what the test measured. One of the criteria for the bridge was that it not move too much in high winds. The test measured how much the prototype bridge moved. Tests can show how well one or more designs meet the criteria. The test described above can show whether the bridge would move too much in high winds.
question: Which of the following could Darnel's test show?
choice: (A) how well the weather station would work when it was windy (B) if the weather station would work when the temperature was 50°C
context: People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the question below. Darnel was a mechanical engineer who was designing to record temperature, precipitation, and wind speed. The weather station would be used in a town where the highest recorded temperature was 40°C. Darnel wanted to make sure the weather station would work even in unusually warm weather. So, he set an indoor test chamber to 50°C with low moisture and no wind. He left the weather station in the chamber overnight. The next day, he checked to see if the weather station displayed accurate measurements after 24 hours at 50°C. Figure: a weather station.
answer: B
rationale: To determine the test's outcome, we need to identify what was tested and measured. In the image, a weather station is being tested in an indoor test chamber set to 50°C with low moisture and no wind. The test was conducted to ensure that the weather station would work accurately even in unusually warm weather. The test measured the weather station's ability to record temperature, precipitation, and wind speed accurately under the conditions of 50°C, low moisture, and no wind. The test can show whether the weather station would work accurately and reliably in such conditions, which is crucial for its proper functioning in the town where the highest recorded temperature was 40°C. Therefore, the test can show if the weather station would work accurately in warm and dry conditions, which is essential for its effectiveness in the town's climate.
generated_skill: To solve the question, one needs to have a good understanding of the engineering-design process and the ability to analyze and interpret information from a given passage. Specifically, the skill required is the ability to identify the problem being addressed, understand the design solution, and determine the test's purpose and outcome. In this case, the problem being addressed is the need for an accurate weather station that can function reliably in warm and dry conditions. The design solution involves creating a weather station that can record temperature, precipitation, and wind speed accurately. The test's purpose is to ensure that the weather station works accurately under the conditions of 50°C, low moisture, and no wind. To solve the question, one needs to understand the engineering-design process, identify the problem, analyze the design solution, and determine the test's purpose and outcome. This requires a combination of critical thinking, problem-solving, and analytical skills, as well as an understanding of the engineering design process and its various steps.
solution:
skill: Evaluate tests of engineering-design solutions