what is the main idea of the passage about aromatherapyfact or fiction
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HESI A2

Reading Comprehension Practice Test HESI A2

1. What is the main idea of the passage about Aromatherapy—Fact or Fiction?

Correct answer: C

Rationale: The main idea of the passage revolves around the skepticism regarding the efficacy of aromatherapy. The mention of needing more studies to determine its true benefits suggests that the current findings are inconclusive. This aligns with choice C, which reflects the need for further research to validate the claims associated with aromatherapy.

2. What is the writer’s primary purpose in writing this essay?

Correct answer: C

Rationale: The primary purpose of the essay is to inform the reader about how the cardiovascular system regulates blood pressure. The essay provides detailed explanations about the components of the cardiovascular system that regulate blood pressure, such as baroreceptors, chemoreceptors, and the kidneys. Choices A and B are incorrect because the essay does not focus on discussing the dangers of high blood pressure or its correlation with a higher risk of heart attack. Choice D is incorrect as the essay does not aim to persuade the reader to control their blood pressure but rather to educate them on the regulatory mechanisms of the cardiovascular system.

3. A reader might infer from this passage that NASA ___________.

Correct answer: C

Rationale: The passage suggests that NASA will use the findings from the twin study to plan future extended space missions.

4. Which statement is not a detail from the passage?

Correct answer: C

Rationale: Choice C, 'The water cycle does not involve precipitation,' is not a detail from the passage. The passage clearly states that precipitation, such as rain, snow, sleet, or hail, is a crucial part of the water cycle. On the other hand, choices A, B, and D are all supported by the passage. Condensation occurs when water vapor cools, evaporation occurs when water changes into gas, and water evaporates from oceans and rivers are all mentioned in the text.

5. Which sound waves have a higher pitch?

Correct answer: A

Rationale: Sound waves that are closer together have a higher pitch. This is explained by the Doppler Effect, where as a source of sound moves closer to an observer, the waves are compressed, resulting in a higher frequency and a higher pitch. Conversely, when the source moves away, the waves are stretched, leading to a lower frequency and a lower pitch. Therefore, choice A is correct. Choices B, C, and D are incorrect as they do not accurately describe the relationship between sound wave frequency and pitch.

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