Sound
The difference between the loudness (L) of an unknown sound and the loudness Lo is known as
intensity level of the unknown sound
intensity level of the known sound
quality of sound
pitch of sound
intensity level of the unknown sound
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The sound waves travel from its source byA. 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
Sound is produced by
A. vibrating bodies
B. transferring signals
C. reflection of waves
D. deflection of waves
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