which property of a wave determines its energy
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ATI TEAS 7

Mometrix TEAS 7 science practice test

1. Which property of a wave determines its energy?

Correct answer: B

Rationale: The energy of a wave is determined by its amplitude, which is the measure of its maximum displacement from the equilibrium position. Waves with higher amplitudes carry more energy as energy is directly proportional to amplitude. Therefore, the correct answer is B) Amplitude. Choice A (Wavelength) does not determine the energy of a wave; it is related to the spatial length between wave crests. Choice C (Frequency) is not the property that determines a wave's energy; it refers to the number of complete oscillations a wave undergoes in a given time. Choice D (Velocity) is the speed at which a wave propagates through a medium and is not directly related to its energy.

2. Which of the following words are synonyms for 'erroneously' as used in the passage? (select all that apply)

Correct answer: A, C

Rationale: 'Erroneously' means incorrectly or mistakenly, which aligns with the context provided in the passage. Therefore, 'Incorrectly' and 'Mistakenly' are synonyms for 'erroneously.' 'Inconsequentially' means not resulting in any significant consequence, which is not synonymous with 'erroneously.' 'Extraneously' means irrelevant or unnecessary, which is also not a synonym for 'erroneously.'

3. Which structure in the skin is responsible for producing melanin?

Correct answer: B

Rationale: The correct answer is B: Melanocyte. Melanocytes in the skin are responsible for producing melanin, the pigment that gives skin its color and provides protection against harmful UV radiation. Sudoriferous glands produce sweat, sebaceous glands produce sebum (oil), and hair follicles are associated with hair growth. However, the specific function of producing melanin is attributed to melanocytes, making them the correct answer in this context.

4. How many quarts are in 1 gallon?

Correct answer: B

Rationale: The correct answer is B: 4 quarts. There are 4 quarts in 1 gallon. This conversion is based on the fact that 1 gallon is equivalent to 4 quarts. Choice A is incorrect as 2 quarts are half of a gallon, not a whole gallon. Choice C is incorrect as 3 quarts is less than a gallon. Choice D is incorrect as it represents only one quart, whereas the question asks for the quantity in a gallon.

5. Which part of the cell serves as the control center for all cell activity?

Correct answer: A

Rationale: The corrected question and answer are accurate. The correct answer is A: Nucleus. The nucleus is known as the control center of the cell as it contains the cell's genetic material (DNA) and directs all cell activities including growth, metabolism, and reproduction. The other organelles listed in the choices, while important for various cellular functions, do not serve as the central control center for overall cell activity.

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