Sound
The wavelength of ultrasonic waves is
more than audible sound
less than audible sound
equal to audible sound
greater than light wave
equal to audible sound
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The difference between the loudness (L) of an unknown sound and the loudness Loย is known asA. intensity level of the unknown sound
B. intensity level of the known sound
C. quality of sound
D. pitch of sound
The sound waves travel from its source by
A. vibrations in wires or strings
B. electromagnetic wave
C. infrared wave
D. changes in air pressure
The loudness of sound is related most closely to its
A. frequency
B. period
C. amplitude
D. wavelength
The loudness of sound varies directly with the vibrating body’s
A. intensity
B. amplitude
C. pitch
D. quality
Ultrasonic waves carry more
A. energy only
B. frequency only
C. heat
D. energy and frequency
The speed of sound in solids is
A. 10 times that in gas
B. 20 times that in gas
C. 5 times that in gas
D. 15 times that in gas
The loudness of sound is directly proportional to
A. intensity
B. area
C. pitch
D. log of intensity
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