Sound

Gap Filling Quiz

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Sound is a form of energy caused by .
Sound needs a in which to travel.
The of sound depends upon the medium through which it travels.
It travels faster through than .
Sound can be reflected off surfaces by means of an .
is a high pitched sound beyond the detection of the human .
Humans sound in the inner ear after it causes the to vibrate.
Very sounds can cause .
Ear protection should be worn in places.