PDF chapter test TRY NOW
1. Suppose that a sound wave and a light wave have the same frequency, then which one has a longer wavelength?
Light has , because light travels at a significantly faster rate.
2. When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.
a. On a hotter day, the echo of sound has and .
b. The speed of sound is to the temperature of the air.
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