Physics Quiz - Sound
 1. Sound is:A vibrations of airB photons of soundC noise measured in bels 2. There is no sound in a:A solidB vacuumC liquid 3. The height of a wave is the:A troughB amplitudeC wavelength 4. The distance from one crest of a wave to the crest of the next wave is the:A wavelengthB frequencyC amplitude 5. The height of a sound wave indicates:A frequency of the soundB pitch of the soundC the loudness of the sound 6. The number of cycles or waves passing a particular point every second is the:A frequencyB wavelengthC volume 7. Frequency is measured in:A hertzB cycles per secondC both of the above 8. Human hearing is between about:A zero and 10000 hertzB 15000 and 20000 HzC 20000 and 25000 decibels 9. Sound higher than 20000 hertz are called:Asonic boomsBultrasonicCsubsonic 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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