Gap Filling Quiz

Fill in all the gaps by choosing the correct answer from the dropdown menu
Each word is to be selected only once
Then press the Check button to see your result
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.