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Physics Quiz - Sound
1. Sound is:
A vibrations of air
B photons of sound
C noise measured in bels
2. There is no sound in a:
A solid
B vacuum
C liquid
3. The height of a wave is the:
A trough
B amplitude
C wavelength
4. The distance from one crest of a wave to the crest of the next wave is the:
A wavelength
B frequency
C amplitude
5. The height of a sound wave indicates:
A frequency of the sound
B pitch of the sound
C the loudness of the sound
6. The number of cycles or waves passing a particular point every second is the:
A frequency
B wavelength
C volume
7. Frequency is measured in:
A hertz
B cycles per second
C both of the above
8. Human hearing is between about:
A zero and 10000 hertz
B 15000 and 20000 Hz
C 20000 and 25000 decibels
9. Sound higher than 20000 hertz are called:
Asonic booms
Bultrasonic
Csubsonic
10. Loudness of sound is measured in:
Adecibels
Bcycles per second
Cmegahertz
11. The loudness of normal converstaion is about:
A150 decibels
B60 dB
C10 dB
12. The volume of rock music is about:
A10 dB
B1000 dB
C100 decibels
13. The speed of sound at 20 degrees Celsius in dry air is about:
A344 m/s
B300 000 m/s
C3.5 km/s
14. Approximately how many seconds does it take for thunder to reach you if lightning strikes one kilometre away?
A10
B1
C3
15. Sound travels:
Aslower in warm air than in cold air
Bfaster in solids and liquids than in air
Cfaster in air than in water

 

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