HESI A2
HESI A2 Vocabulary 2023
1. An alarm that is strident is ___________.
- A. shrill
- B. muted
- C. constant
- D. resonant
Correct answer: A
Rationale: A strident alarm is loud, harsh, and piercing. The word 'shrill' specifically denotes a high-pitched and piercing sound, which aligns well with the characteristics of a strident alarm. Therefore, 'shrill' is the most suitable answer in this context. Choices B, C, and D are incorrect because a strident alarm is not quiet (muted), unchanging (constant), or deep and full (resonant), but rather loud and harsh.
2. Which element has an atomic mass greater than that of sodium?
- A. Boron
- B. Oxygen
- C. Fluorine
- D. Silicon
Correct answer: D
Rationale: Silicon has an atomic mass greater than that of sodium. The atomic mass of silicon is approximately 28.0855 u, whereas the atomic mass of sodium is approximately 22.9898 u. Therefore, silicon has a greater atomic mass compared to sodium. Boron, Oxygen, and Fluorine have atomic masses lower than sodium, making them incorrect choices in this context.
3. Why did Strauss set up a net during the construction of the Golden Gate Bridge?
- A. For suspension
- B. For balance
- C. For aesthetics
- D. For safety
Correct answer: D
Rationale: Strauss set up a net to ensure the safety of the workers in case of falls during the construction of the Golden Gate Bridge. Safety nets were essential to protect the workers from potential accidents or falls while working on the bridge. Choice A ('For suspension') is incorrect as safety nets were not used for suspension purposes but rather for worker safety. Choice B ('For balance') is incorrect as the balance of the bridge was maintained by other construction elements, not safety nets. Choice C ('For aesthetics') is incorrect as safety nets are not related to the visual appearance of the bridge but rather to the protection of the workers.
4. Which vitamin is necessary for blood clotting?
- A. Vitamin D
- B. Vitamin K
- C. Vitamin C
- D. Vitamin B12
Correct answer: B
Rationale: Vitamin K is essential for the synthesis of proteins involved in blood clotting. These proteins help in the coagulation process, ensuring that wounds can heal properly by preventing excessive bleeding. Without sufficient Vitamin K, the blood clotting process may be impaired, leading to potential health risks. Vitamin D is important for bone health, Vitamin C is essential for the immune system and collagen production, and Vitamin B12 plays a role in red blood cell production and nerve function, but they are not directly involved in the blood clotting process.
5. Identify the dependent clause in this sentence: 'The mother dog left her bed as soon as the puppies were ____.'
- A. slept
- B. sleeping
- C. awake
- D. sleep
Correct answer: B
Rationale: The correct answer is 'B: sleeping.' In the sentence, 'as soon as the puppies were sleeping' functions as the dependent clause. A dependent clause is a group of words that contains a subject and a verb but cannot stand alone as a sentence. Choices A, C, and D do not form a dependent clause in the sentence provided. 'Slept' (A) is a verb in the past tense, 'awake' (C) is an adjective, and 'sleep' (D) is a noun. Therefore, 'sleeping' (B) is the only choice that correctly forms the dependent clause in this sentence.
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