You are trying to sleep in a noisy environment and deci... | Science Class 5

Science Class 5 Work and Energy

Asked by AKSHAY GURU VARADHARAJAN · CHRYSALIS HIGH, HORAMAVU

You are trying to sleep in a noisy environment and decide to use a pillow to block out some of the noise. Why might the pillow be effective at reducing sound?

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A It has a smooth surface that reflects sound waves away.
B It has air spaces that trap sound waves.
C Its porous structure allows sound waves to pass through easily.
D It creates an echo.

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