- According to the passage, why do coral reefs need shallow, clear water?
Answer: So sunlight can reach the algae that help the coral make food.
The best answer is that sunlight can reach the algae that help the coral make food. The passage says algae live inside the polyps and make food using sunlight, so the water must be clear and shallow enough for light to get through. The choice about sunlight warming the water so polyps can build skeletons is wrong because the passage says the polyps build hard skeletons over many years, not because of sunlight or warmth. The choice about sea turtles and fish finding a safe place to swim is wrong because those animals do live near reefs, but that is not the reason reefs need clear water. The choice about warm water pushing out the algae and turning the coral white is wrong because that happens when the ocean gets too warm, and it harms the coral instead of being a reason it needs clear water.
- Based on the passage, what might happen if a reef bleaches often?
Answer: Many animals could lose a safe home and food source near the reef.
The passage says many ocean animals live near reefs and depend on them, so if a reef bleaches often, those animals could lose their safe home and food source. That is why the first choice is best. The idea that warmer water helps corals build is wrong, because the passage explains that water getting too warm is what causes corals to bleach and turn white. The choice saying bleached corals keep their algae inside is wrong, because bleaching means the corals push the algae out. The last choice is wrong, because the algae need sunlight to make food, so losing algae and sunlight would mean less food, not more.
- Based on the passage, what does Franklin's choice not to patent suggest about him?
Answer: It suggests he cared about helping others use his inventions freely.
The passage says Franklin did not patent his inventions because he wanted them to help everyone. Not patenting means anyone could make and use his ideas, so this shows he cared about others being able to use his inventions freely. The choice saying he wanted to be the only person allowed to build them is the opposite of what happened, since not patenting let everyone use them. The choice saying he thought his ideas were not useful is wrong because he clearly built things people needed, like a stove that saved wood. The choice about worrying that others would improve his designs is wrong too, because Franklin wanted his ideas to help people, not to protect his designs. Only one choice matches his goal of helping everyone.
- Read the passage. Benjamin Franklin invented devices to solve everyday problems. In the 1740s, he invented the Franklin stove, which heated homes more efficiently and used less wood. In the 1780s, he invented bifocal glasses because he was tired of switching between two pairs. Franklin also invented the lightning rod to protect buildings from lightning strikes. Unlike many inventors, he did not patent his inventions because he wanted everyone to benefit. According to the passage, why did Franklin invent bifocal glasses?
Answer: He did not want to keep changing between two different pairs of glasses.
The passage tells you exactly why Franklin invented bifocal glasses: he was tired of switching between two pairs. The correct answer says the same thing in different words — he did not want to keep changing between two different pairs of glasses. The choice about warming a home with less wood describes the Franklin stove, a different invention, so it does not answer why he made bifocals. The choice about measuring electricity matches the lightning rod, not the glasses. The choice about sailors reading maps at sea is never mentioned in the passage at all, so there is no evidence for it. To find the right answer, look for where the passage names 'bifocal glasses' and read the reason that comes right after it. Be careful not to pick a true fact about a different invention, and do not choose an idea the passage never states.
- Which information from the passage best supports the idea that dolphins are social animals?
Answer: Scientists have seen dolphins work together to herd fish and take turns feeding.
Dolphins working together to herd fish and taking turns feeding shows that they cooperate with each other, which supports the idea that they are social animals. Choice A describes hunting using echoes, which is about finding food, not working with others. Choice C is a fact about being a mammal, not about social behavior. Choice D describes physical ability, not cooperation with other dolphins.
- Based on the passage, what can you infer about bats' nighttime hunting?
Answer: Bats mainly use sound, not sight, to find insects in the dark.
Bats mainly use sound to find insects, since the passage explains that they send out sounds and read the echoes to locate moths in the dark. Bats hunt at night, not during bright afternoons, so this does not fit the passage. The passage never says bats wait on branches; it describes them making sounds and reading echoes instead. Nothing in the passage connects bat sounds to helping plants grow.
- Read the passage. Most bats are nocturnal, so they hunt at night. Since it is too dark to see well, bats use echolocation to find insects. A bat makes high-pitched sounds that humans cannot hear, and the sounds bounce back as echoes. By listening to echoes, a bat can tell the distance and direction of a moth. A single bat can catch hundreds of insects in one night. Some bats can even tell the difference between edible and poisonous insects using echolocation. According to the passage, what does echolocation help bats do?
Answer: It helps bats find insects by using echoes to locate them in darkness.
The passage tells you that bats use echolocation to find insects. It explains that a bat makes high-pitched sounds, and the echoes that bounce back let the bat tell the distance and direction of a moth in the dark. So the best answer is that echolocation helps bats find insects by using echoes to locate them in darkness. The choice about staying warm is wrong: the passage mentions the high-pitched sounds, but it never says those sounds keep bats warm. The choice about seeing bright colors is wrong: the passage says bats use echolocation because 'it is too dark to see well,' so they are not seeing colors. The choice about flying faster is wrong: echoes help a bat sense where things are, not push it through the air. Remember to check each answer against what THIS passage actually says, instead of guessing from what you already know about bats.
- Based on the passage, what can you infer might happen if a reef bleaches?
Answer: You can infer some reef animals may struggle because the reef becomes less healthy.
The passage says many reef animals need the reef for a home, and that polyps need algae for food. When a reef bleaches, it loses its algae and becomes less healthy, so some animals that depend on it would likely struggle. The idea that polyps get stronger by losing algae is wrong, because the passage says polyps need algae for food, not that algae hold them back. The idea that a bleached reef grows faster is wrong, because bleaching means losing algae, and reefs grow best with sunlight and healthy algae, not without them. The idea that bleaching cools the water is wrong, because the passage says bleaching happens when the water gets too warm, so bleaching is a result of heat, not something that removes it.
- Which statement can be concluded from the passage about Franklin's inventions?
Answer: Franklin tried to help people by fixing problems they faced.
The best answer is that Franklin tried to help people by fixing problems they faced. Each invention listed solves an everyday problem: the stove keeps homes warm, the glasses help him see, and the rod protects buildings from lightning. The idea that he invented things mostly to earn money and become fame is wrong because the passage says he let everyone use his ideas for free, not that he sold them. The choice that he cared only about lighting is wrong because he also made a stove and glasses, so he worked on many different problems. The choice that he built each invention just for himself and shared none is wrong because the passage clearly states he let everyone use his ideas for free. Only one answer matches every clue in the passage.
- Read the passage. Most bats are nocturnal, so they hunt at night for food. Since it is too dark to see insects, bats use echolocation. A bat makes high-pitched sounds, and the echoes bounce back from objects like moths. By reading the echoes, the bat learns the prey's size, distance, and direction. A single bat can catch hundreds of insects in one night. Which detail from the passage best supports the idea that echolocation is precise?
Answer: The passage explains echoes tell a bat the prey's size, distance, and direction.
The word precise means exact or detailed. The best answer is that the echoes tell a bat the prey's size, distance, and direction. Learning three exact facts about the prey shows echolocation gives careful, precise information, which is just what the question asks. The choice about bats being nocturnal and hunting when it is dark is true, but it explains when bats hunt, not how exact their hunting is. The choice naming moths gives one example of what bats catch, but an example of prey does not show that echolocation is precise. The choice about catching hundreds of insects shows that bats are successful hunters, but a large number is not the same as exact, detailed information. Only the detail about size, distance, and direction points to precision, so it is the single best answer.
- Which detail from the passage best supports the idea that reefs need sunlight?
Answer: The passage explains algae make food using sunlight and share it with the polyps.
The passage says algae inside the polyps make food using sunlight, which directly shows why reefs need light. Listing which animals live in reefs does not explain the sunlight connection. Saying reefs form slowly over time or describing what a reef is made of also does not address why sunlight matters.
- Which example from the passage best shows that Franklin solved an everyday problem?
Answer: He made glasses because he was tired of switching glasses.
Making glasses to avoid switching between two pairs solved a specific everyday annoyance, which makes this the clearest example of solving an everyday problem. The stove and the lightning rod solved larger technical or safety problems rather than a simple daily annoyance. Letting people use his ideas for free was a choice about sharing, not an example of solving a problem itself.
- Read the passage. Benjamin Franklin invented tools to solve everyday problems. In the 1740s, he created the Franklin stove, which heated homes better and used less wood. In the 1780s, he invented bifocal glasses so he could see both near and far. He also invented the lightning rod to protect buildings during storms. The passage states Franklin did not patent his inventions because he wanted everyone to benefit. Based on the passage, which statement can you conclude about Franklin?
Answer: He cared about helping people, since he shared inventions instead of keeping them only for profit.
The passage says Franklin invented useful tools like the stove, bifocals, and lightning rod, and that he chose not to patent them so everyone could benefit. When you put these details together, they show he cared about helping people, since sharing his inventions instead of keeping them for profit was a caring choice. The answer about wanting to be famous is wrong because the passage never says Franklin cared about fame or put his name on his inventions. The answer about liking simple projects is wrong because the passage tells why he invented things, not which projects were easy or hard to build. The answer about worrying over money is wrong because the passage says the opposite: he did not patent his tools so everyone could use them, which means he was not charging a fee. Only one answer matches the details the passage actually gives you.
- Based on the passage, what does the careful recording of locations suggest about artifacts?
Answer: Their exact position can give clues about how people once used the site.
The passage says archaeologists write down where each item was found so they can learn about the past. That means the spot where something sits is itself a clue about how people once used the place. The choice about which fragile pieces need the most protection is wrong because the passage links protection to the tools, not to where an object is found. The choice about knowing which tools to bring is wrong because a location on a map does not tell you what equipment you will need. The choice about how deep the soil is across the site is wrong because writing down one item's location does not measure soil depth everywhere. Only the first choice explains why recording the exact position matters: it reveals the past.
- Read the passage. Dolphins make clicks, whistles, and body movements to communicate. Each dolphin has a signature whistle that acts like a name. Dolphins also use echolocation by sending clicks that bounce back as echoes. Scientists have watched dolphins herd fish into tight groups and take turns feeding. Mother dolphins teach calves communication skills for the first few years. Based on the passage, what can you infer about how young dolphins learn?
Answer: They learn important skills over time by being taught by their mothers.
The passage says, "Mother dolphins teach calves communication skills for the first few years." That detail points to skills being taught gradually by mothers, so the answer about learning important skills over time by being taught by their mothers fits the text best. The choice saying young dolphins learn everything on their own without help is wrong because the passage clearly shows mothers doing the teaching. The choice about copying the fish they herd is a misreading: the passage mentions herding fish for feeding, not as a way calves learn. The choice saying they learn instantly at birth because everything is memorized is contradicted by the phrase "for the first few years," which shows learning takes time, not an instant. When a question asks you to infer, look for clue words like "teach" and "first few years," then choose the answer those clues support.
- Read the passage. Dolphins communicate using clicks, whistles, and body movements. Each dolphin develops a unique "signature whistle" that works like a name. When dolphins hunt together, they use echolocation by making clicking sounds that bounce off objects. Scientists have seen dolphins herd fish into tight groups and take turns feeding. Mother dolphins teach calves communication skills during the first few years. Based on the passage, what can you infer about dolphin groups?
Answer: You can infer pods have strong teamwork because they herd fish together and take turns feeding.
This question tests drawing inferences from textual evidence (CCSS.RI.4.1), specifically making reasonable inferences about dolphin group behavior. The passage does not directly state that pods have strong teamwork, but provides details that support this conclusion: dolphins 'hunt together,' they 'herd fish into tight groups and take turns feeding,' and mothers teach calves communication skills. Together, these details suggest coordinated group behavior and cooperation. Choice A is correct because it is a reasonable conclusion based on the details provided - herding fish together and taking turns feeding are specific examples of teamwork mentioned in the passage. Choice B is incorrect because it contradicts the text, which states dolphins use echolocation when hunting together, not just when alone. To help students use details and examples effectively: Teach the 'detective' approach for inferences: collect clues (hunting together, taking turns, teaching skills), identify patterns (all involve cooperation), and draw conclusions (pods work as teams). Model connecting multiple details: 'The passage gives three examples of dolphins working together - what do these examples tell us about dolphin groups?' Practice distinguishing between reasonable inferences supported by text evidence and wild guesses that contradict passage information.
- Based on the passage, what can you conclude about dolphin communication?
Answer: You can conclude it is complex because dolphins use names, teamwork signals, and learned sounds.
The passage shows many different tools working together: whistles that act like names, clicks to study objects, teamwork to herd fish, and mothers teaching calves. Because so many parts combine, the best conclusion is that dolphin communication is complex. Saying it uses only one kind of signal is wrong, since the passage lists clicks, whistles, and body moves. Saying it is pure instinct is wrong, because the passage says mother dolphins teach their calves these skills, so calves must learn them. Saying dolphins can name objects but cannot warn one another misreads the text: the unique whistle names the dolphin itself, not objects, and working together to herd fish shows dolphins do share information. Only the first choice fits everything the passage describes.
- Based on the passage, why is archaeology work usually slow and careful?
Answer: Because artifacts can be fragile, and careful digging helps scientists learn about the past.
The passage says archaeologists dig slowly, use small brushes so items do not break, and measure each artifact before moving it. This tells you the work is slow and careful because artifacts can be fragile, and taking care helps scientists learn about the past. The choice saying artifacts must be measured quickly is wrong because the passage shows careful, slow work, not fast work. The choice about brushes helping scientists dig faster is wrong because the passage says brushes are used so items do not break, not to speed things up. The choice saying artifacts are easy to replace and rushing saves time is wrong because artifacts are old objects that cannot simply be replaced, which is exactly why the work is careful.
- Which detail from the passage best supports the idea that echolocation is very precise?
Answer: The text states a bat can tell the size, distance, and direction of its prey.
Telling the exact size, distance, and direction of prey shows just how precise echolocation is, so choice B is correct. Choice A describes when bats are active, not how precise their hunting is. Choice C describes how many insects a bat catches, which shows success but not precision. Choice D describes where and what bats hunt, not how exact their senses are.
- Read the passage. Monarch butterflies migrate from Canada and the United States to central Mexico. Some fly up to 3,000 miles, and they travel in the fall. In Mexico, they cluster together on oyamel fir trees in the mountains. No single butterfly makes the whole round trip because it takes 3 or 4 generations. Scientists say monarchs use the sun as a compass. Based on the passage, what does the information about 3 or 4 generations suggest?
Answer: It suggests the journey is so long that one butterfly cannot complete it alone.
The passage says no single butterfly makes the whole round trip and that it takes 3 or 4 generations, and that some monarchs fly up to 3,000 miles. Put together, these details tell you the trip is simply too long for one butterfly to finish, so the best answer is that the journey is so long that one butterfly cannot complete it alone. The choice about each generation flying to a warmer part of the mountains adds a reason the passage never gives, so it is not supported. The choice about stopping to raise families on the fir trees misuses the detail about clustering on trees, which the passage links to resting, not to why several generations are needed. The choice about needing the sun as a compass names a real detail from the passage, but the sun explains how monarchs find their way, not why the trip takes 3 or 4 generations. Only the first choice uses the details about distance and generations to answer the actual question.
