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2nd prep

Name:
Sound waves don’t travel though ………… .
Air
Vaccum
Water
Wood
- the sound produced from the school’s bell is considered ………… waves.
Longitudinal
Electromagnetic
Transverse
Longitudinal and mechanical
Sound wave that propagates through air with velocity 330 m/s and of wavelength 0.1 m, its frequency equals ………… .
330 kilohertz
3300 Hertz.
33 kilohertz
330 hz
The sound pitch increases by ………… .
The decrease of frequency.
The increase of amplitude.
The increase of frequency.
The increase of the distance between the ear and the sound source.
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