Why does a tightly stretched drum skin make a different sound than a loose one?

Question

Why does a tightly stretched drum skin make a different sound than a loose one? — Exam MCQ

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D. A tightly stretched drum skin vibrates faster than a loose one — The correct choice is A tightly stretched drum skin vibrates faster than a loose one. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.

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A. A tightly stretched drum skin is heavier than a loose one

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B. A tightly stretched drum skin is thicker than a loose one

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C. A tightly stretched drum skin contains more air than a loose one

Why does a tightly stretched drum skin make a different sound than a loose one?

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