Nokea
Why do cicadas make a buzzing sound?
- A. To orient via echolocation
- B. To attract a mate
- C. To locate a food source
- D. To ward off predators
Correct Answer: B
Rationale: Cicadas make a buzzing sound primarily to attract a mate. This sound is a mating call produced by the males to attract females for reproduction. While echolocation is used by some animals like bats for navigation, cicadas do not use buzzing for orientation. Buzzing is not related to locating a food source or warding off predators in the case of cicadas.
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Which of the following conclusions can be drawn from the passage?
- A. Plastic pollution poses a significant environmental threat due to its lasting nature and difficulty in recycling.
- B. Plastic is an outdated material with no advantages.
- C. Recycling plastic significantly reduces environmental pollution.
- D. Plastic pollution has no impact on marine life.
Correct Answer: A
Rationale: The correct conclusion that can be drawn from the passage is that plastic pollution poses a significant environmental threat due to its lasting nature and difficulty in recycling. The passage highlights the challenges of recycling plastic due to its low quality when recycled, leading to pollution and environmental hazards. It mentions the presence of a large island of plastic in the Pacific Ocean, showing the severe impact of plastic pollution on the environment. Therefore, choice A is the most accurate conclusion. Choice B is incorrect as the passage mentions that plastic has many advantages despite its recycling challenges. Choice C is incorrect as the passage indicates that recycling plastic is difficult due to its low quality when recycled. Choice D is incorrect as the passage clearly states that plastic consumption by marine life like fish and birds is a reality, showing the impact of plastic pollution on marine ecosystems.
Which of the following contains only key points of the passage?
- A. Dr. Creekstone's 90th birthday party with 3000 guests, zebras, monster trucks, bagpipe player, limited buffet, and fireworks display.
- B. There were shocking buffet items at Dr. Creekstone's birthday party.
- C. Dr. Creekstone plans to have an even bigger and more interesting birthday party next year.
- D. Dr. Creekstone's 90th birthday party had 3000 guests, zebras, monster trucks, bagpipe player, limited buffet, and fireworks display.
Correct Answer: A
Rationale: Choice A provides a comprehensive list of key points from the passage about Dr. Creekstone's 90th birthday party, including the number of guests, unique elements like zebras and monster trucks, the buffet contents, and the fireworks display. Choices B and C do not cover all the important details mentioned in the passage, making them incomplete and inaccurate. Choice D is a partial summary, missing essential details such as the unique elements and the limited buffet, so it is not the best option.
What is a typical characteristic of male cicadas?
- A. They have short antennae and wide-set eyes.
- B. They respond with a clicking sound when ready to mate.
- C. They make strident, high buzzing sounds by vibrating two membranes on their abdomen.
- D. They deposit eggs into the bark after mating.
Correct Answer: C
Rationale: Male cicadas are known for making strident, high buzzing sounds by vibrating two membranes on their abdomen, reaching up to 80 to 100 decibels, similar to the roar of a loud engine. This behavior is distinct to male cicadas and serves as a way to attract females for mating. Choice A is incorrect because it describes physical characteristics of cicadas, not behavior. Choice B is incorrect as it describes the behavior of female cicadas, not males. Choice D is incorrect as it pertains to the behavior of female cicadas after mating, not males.
Which of the following words, as used in the timeline, indicates the chronology of events in Barton's life?
- A. Front
- B. First
- C. After
- D. Through
Correct Answer: C
Rationale: 'After' is used to indicate that one event happened following another in time. In the context of a timeline, 'After' signifies the sequence of events, showing what occurred subsequent to a particular point in time. In the provided extract, events unfold in a specific order, with each event happening 'after' the previous one. Choices A, B, and D do not inherently convey the idea of chronological order and are not suitable for indicating the sequence of events in a timeline.
Why was Lamarr's invention not of interest to the US?
- A. Hollywood was known to have spies
- B. The navy preferred to use the work of military engineers
- C. The military was too preoccupied to consider new inventions
- D. They suspected her patent was invalid
Correct Answer: B
Rationale: The correct answer is B. The US Navy preferred to utilize technology developed by military engineers rather than consider Lamarr's invention. Choice A is incorrect because Hollywood containing spies is not relevant to why the US was not interested in Lamarr's invention. Choice C is incorrect as there is no mention of the military being too preoccupied to consider new inventions in the provided context. Choice D is incorrect as there is no indication that the US suspected Lamarr's patent to be invalid; rather, the focus was on the navy's preference for technology developed by military engineers.