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Waves and Sound — Test Answers

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22
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Which best describes the energy of a sound wave as it travels through a medium?

A
It remains the same.
B
It depends on the medium.
C
It decreases.
D
It increases.
23
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Which two technologies use the same range of radio wave frequencies?

A
AM and FM radio broadcasting
B
television broadcasting and AM radio broadcasting
C
CB radios and submarine communication
D
cell phones and space communication
24

Which lists the amplitudes of sound waves from these sources in order from greatest to least?

A
chainsaw, diesel truck, rustling leaves
B
library, conversational speech, music from speaker
C
kids whispering, vacuum cleaner, jet airplane
D
busy roadway, kids whispering, average home

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Waves and Sound — Test Answers — Physics