Answers26-27 IC Physics 7614BWave Properties

Sound Waves Answers

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What two factors affect the speed of a sound wave as it travels through a medium?

A
the energy transferred by the wave and the density of the medium
B
the type of medium and the energy transferred by the wave
C
the type of medium and the temperature of the medium
D
the temperature of the medium and the energy transferred by the wave
2
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A sound wave travels through air. In which regions are air molecules the least dense?

A
compressions
B
frequencies
C
pitches
D
rarefactions
3

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

A
diffraction
B
Doppler effect
C
reflection
D
resonance
4

A guitar string is plucked. What best describes the formation and transmission of the sound wave?

A
The string vibrates the surrounding air, which produces a transverse wave.
B
The string vibrates the surrounding air, which produces a longitudinal wave.
C
The string produces a longitudinal wave that travels without a medium.
D
The string produces a transverse wave that travels without a medium.
5

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

A
It increases.
B
It decreases.
C
It remains the same.
D
It depends on the medium.

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Sound Waves Answers — 26-27 IC Physics 7614B