- Read the passage.
The water cycle is a sequence of steps that moves water around Earth. First, the Sun heats water in oceans, lakes, and rivers. Because the water warms up, it evaporates and becomes water vapor, an invisible gas in the air.
Next, the water vapor rises and cools. As a result, it condenses into tiny droplets that form clouds. When droplets join together and get heavy, precipitation happens. Water falls as rain or snow.
After that, water collects on the ground. Some water runs downhill into streams and rivers, and some soaks into the soil. Later, much of this water returns to the ocean, where the cycle can begin again.
Each step depends on the step before it. Without evaporation, there would be less water vapor, so fewer clouds would form.
What is the relationship between evaporation and condensation in the water cycle?
Answer: Evaporation creates water vapor, and condensation turns that vapor into cloud droplets.
The passage shows these two steps in order. First the Sun heats water so "it evaporates and becomes water vapor." Then "the water vapor rises and cools. As a result, it condenses into tiny droplets that form clouds." So the correct choice is the one saying evaporation creates water vapor and condensation turns that vapor into cloud droplets—evaporation makes the material that condensation then changes.
The choice that says condensation forms the vapor first and evaporation cools it reverses the order; the passage clearly shows evaporation comes first. The choice calling them two names for one step is wrong because the text describes two separate steps that do opposite things—one makes gas, one makes droplets. The choice that says condensation falls back as rain or snow confuses condensation with precipitation; the passage says precipitation happens later, when droplets "join together and get heavy," not during condensation itself.
- Based on the passage, what caused the town to improve its water treatment system?
Answer: The town improved the system because heavy rain washed pollution into the river, making the water smell bad.
The passage says rainwater washed dirt and trash into the river and made it smell bad, and the town used the river for drinking water, so leaders improved the system. Choice A gives that cause, so it is correct. Choice B blames chlorine, Choice C blames screens, and Choice D blames boats, none of which the passage names as the cause.
- How do producers and decomposers work together in the food chain described in the passage?
Answer: Decomposers recycle nutrients that help producers grow, so the cycle can continue.
The passage says decomposers break down dead plants and animals and send nutrients back to the soil or water, which helps producers grow again. That is why the answer about decomposers recycling nutrients so the cycle can continue is correct.
The choice saying producers break down dead things while decomposers use sunlight swaps their jobs, since it is producers that use sunlight and decomposers that break things down. The choice saying producers make food and decomposers store it to feed consumers is wrong because the passage never says decomposers feed consumers; consumers eat producers and other consumers. The choice saying decomposers break things down but producers send nutrients back gets the teamwork backward, since the passage says the nutrients from decomposers help producers grow, not the other way around.
- How do evaporation and condensation work together in the water cycle?
Answer: Evaporation changes liquid water into vapor, and condensation changes that vapor into droplets that form clouds.
Evaporation first changes liquid water into vapor, and then condensation changes that vapor into droplets that form clouds, so the two steps connect. Choice B describes that order correctly, so it is correct. Choice A reverses the two steps, Choice C says condensation warms the Sun, and Choice D says they are unrelated, none of which the passage supports.
- How did Alexander Fleming's work relate to the work of Howard Florey and Ernst Chain?
Answer: Fleming's discovery that mold stopped bacteria led Florey and Chain to develop penicillin into a usable medicine.
Fleming discovered that the mold stopped bacteria, and later Florey and Chain built on that discovery to turn penicillin into a usable medicine. Choice A shows that connection, so it is correct. Choice B invents a competition, Choice C puts the teamwork in the wrong year and people, and Choice D reverses who discovered the mold, so none matches the passage.
- Read the passage, then answer the question.
In a food chain, energy moves from one living thing to another. First, plants use sunlight to make their own food. Next, rabbits eat the plants and gain energy. Then, foxes eat rabbits and gain energy too.
However, energy does not move perfectly from level to level. When a rabbit runs or stays warm, it uses some energy. As a result, less energy is available for the fox. Therefore, each level depends on the one before it for energy, but the amount of energy gets smaller.
What does the passage show about the relationship between rabbits and foxes in this food chain?
Answer: Foxes depend on rabbits for energy because foxes eat rabbits.
The passage traces how energy moves up the food chain: plants make food, rabbits eat plants, and then foxes eat rabbits. Because foxes get their energy by eating rabbits, foxes depend on rabbits, which is exactly what the correct answer says.
The choice saying foxes and rabbits share energy equally by both eating plants is wrong because the passage says foxes eat rabbits, not plants. The choice saying they gain the same amount of energy is wrong because the passage clearly states energy 'does not move perfectly' and that the amount 'gets smaller' at each level. The choice saying rabbits eat foxes reverses the relationship—the passage says foxes eat rabbits, so the dependency and energy flow go the other way. Watch the direction of the arrows in a food chain: energy flows from what is eaten to what eats it.
- How are the telegraph and the telephone related, according to the passage?
Answer: Both sent messages through wires, but the telephone sent voices and the telegraph used Morse code.
The passage says both machines used wires and electricity, so they are alike. But they carried different messages: the telegraph sent coded Morse dots and dashes, while the telephone sent real voices. The choice that names both the likeness (wires) and the difference (voices versus Morse code) is correct. One choice claims they were invented in the same year and both sent voices, but the passage gives different years (1837 and 1876) and says only the telephone sent voices. Another choice says both used dots and dashes for the same words, but only the telegraph used Morse code, and the telephone sent real voices instead. The last choice says both worked without electricity and that the telephone did not build on telegraph ideas, but the passage clearly states both used electricity and that the telephone built on older ideas about sending signals through wires.
- Read the passage, then answer the question.
In 1903, Orville and Wilbur Wright tested a flying machine at Kitty Hawk, North Carolina. First, they studied how wings create lift by testing gliders. Next, they added an engine and propellers to create powered flight. Because their early tests showed problems with control, they changed the wing and tail design.
On December 17, 1903, the Wright brothers successfully flew the Wright Flyer for a short time. Later, they improved their designs so planes could fly longer and turn more safely. As a result, their careful sequence of testing and fixing problems led to better airplanes.
Which statement best describes how the Wright brothers' early glider tests affected their later powered flight?
Answer: The glider tests led them to change designs for better control before adding an engine.
This question assesses CCSS.RI.5.3: explaining the relationships or interactions between two or more individuals, events, ideas, or concepts in a historical, scientific, or technical text based on specific information in the text. This passage describes the Wright brothers' early glider tests (which revealed control problems) and their later powered flight (which succeeded after design changes). The relationship between them is iterative improvement through testing and modification. Specifically, the text states 'Because their early tests showed problems with control, they changed the wing and tail design' and 'their careful sequence of testing and fixing problems led to better airplanes.' This shows how glider tests informed design improvements before adding an engine. Choice A is correct because it accurately describes the relationship using specific information from the passage: the glider tests revealed control issues, leading to design changes that made powered flight possible. This answer explains not just what happened, but HOW early tests influenced later success. Choice B represents a misunderstanding of the testing purpose. Students who select this may have missed that the brothers always intended powered flight and used gliders to solve control problems first. To help students explain relationships: (1) Identify subjects: What were glider tests? What was powered flight? (2) Find relationship signal words: 'Because,' 'changed,' 'As a result,' showing cause-effect. (3) Ask relationship questions: How did early tests affect later designs? Why test gliders before adding engines? (4) Find specific information: Glider tests → found control problems → changed designs → then added engine. (5) Use graphic organizers: Flow chart showing test → identify problem → modify design → test again → add engine. (6) Practice sentence stems: 'The glider tests led to powered flight success because...' (7) Check answer: Does it show how testing informed improvements? Common difficulties: Students often miss iterative processes or think each test was separate rather than building toward a goal through progressive improvements.
- Read the passage, then answer the question.
A circuit is a path that lets electricity flow. In a simple flashlight, the battery provides electrical energy. The wires carry that energy through the circuit. The bulb changes the electrical energy into light and heat.
However, the flashlight only works when the switch is turned on. When the switch is off, it breaks the circuit, so electricity cannot flow. When the switch is on, it closes the circuit. As a result, electricity can move from the battery through the wires to the bulb.
How are the switch and the bulb related in a flashlight circuit?
Answer: The switch controls whether electricity reaches the bulb by opening or closing the circuit.
The passage explains that the switch opens or closes the circuit: when it is off it breaks the circuit so electricity cannot flow, and when it is on it closes the circuit so electricity can move to the bulb. So the switch controls whether electricity reaches the bulb, which is why that choice is correct.
The choice saying the bulb turns the switch on is wrong because the bulb only changes electrical energy into light and heat; it does not send energy backward to run the switch. The choice saying the switch and bulb do the same job is wrong because they have different roles: the switch controls the circuit, while the bulb makes light. The choice saying the bulb decides how much energy the switch stores is wrong because nothing in the passage stores energy, and the bulb does not control the switch. To answer, ask how one part affects the other: the switch's position decides whether the bulb gets electricity.
- How did Newton's ideas relate to Galileo's observations?
Answer: Newton's laws built on Galileo's observations by explaining the forces that keep planets in orbit.
The passage says Galileo looked through his telescope and saw things that support the idea that Earth moves around the Sun. Later, Newton explained the forces of gravity and motion that keep planets in orbit. So the best answer is that Newton's laws built on Galileo's observations by explaining those forces. The choice saying Newton replaced Galileo and proved the telescope showed the wrong planets is wrong, because the passage says Newton built on Galileo's work, not that he disproved it. The choice saying both men believed the Sun moves around Earth is wrong, because Galileo's observations supported the idea that Earth moves around the Sun. The choice saying Newton ignored earlier findings is wrong, because the passage clearly states Newton's work built on what Galileo had seen.
- Read the passage, then answer the question.
In 1793, Eli Whitney designed the cotton gin in the United States. The machine quickly separated cotton fibers from seeds. Because it saved time, farmers could clean more cotton each day. As a result, cotton became more profitable to grow.
Next, many Southern farmers planted more cotton than before. This led to a greater need for workers to plant and pick cotton. Therefore, the cotton gin changed farming and also affected the economy in the South.
What is the relationship between Eli Whitney's cotton gin and the increase in cotton farming in the South?
Answer: The cotton gin led to more cotton farming because it made cleaning cotton faster and easier.
The passage shows a cause-and-effect chain: the cotton gin separated fibers from seeds quickly, so farmers could clean more cotton each day, cotton became more profitable, and Southern farmers planted more of it. The best answer says the cotton gin led to more cotton farming because it made cleaning faster and easier—that matches exactly what the passage describes. The choice saying the gin only changed how cotton was sold and had nothing to do with how much was planted is wrong, because the passage states farmers 'planted more cotton than before' after the invention. The choice saying demand for farming came first and pushed Whitney to invent the gin reverses the order—the passage says the gin came in 1793 and then led to more farming. The choice saying the gin made farmers grow less because cleaning still took just as long contradicts the passage, which says the machine 'saved time' and let farmers clean more cotton each day. Only one answer keeps the correct direction of cause and effect and matches the passage's details.
