Physical Science

Chapter 11: Sound

Section 2 Self-Check Quiz-Eng.

1.
__________ is the amount of energy that flows through a certain area in a specific amount of time.
A)Intensity
B)Frequency
C)Pitch
D)Loudness
2.
The human perception of sound intensity is __________ .
A)frequency
B)loudness
C)pitch
D)acoustics
3.
The intensity of sound is measured in units called __________ .
A)decibels
B)hertz
C)dopplers
D)reverberations
4.
The human perception of sound frequency is __________ .
A)pitch
B)intensity
C)loudness
D)resonance
5.
Which of the following will you hear as a high pitch?
A)sound wave with frequency of 50 Hz
B)sound wave with frequency of 10,000 Hz
C)sound wave with intensity of 10 dB
D)sound wave with intensity of 100 dB
6.
__________ waves are sound frequencies above 20,000 Hz.
A)Ultrasonic
B)Infrasonic
C)Subsonic
D)Supersonic
7.
The change in pitch due to a moving wave source is called __________ .
A)a rarefaction
B)the Doppler effect
C)the compressional effect
D)resonance
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