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Noise
This task is about echoes and sound insulation.
Question
a) During a class tramp a teacher called out to a group of children.
Her shout produced an echo.
For her voice to echo, where would the teacher most probably have been standing?
Amongst large trees
Facing a tall cliff
On a hill top
In a clearing in the bush.
Question
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b) Describe what happens to the sound when you hear an echo.
b) Describe what happens to the sound when you hear an echo.
Question
c) Which of the following would most help in reducing the noise level in a room?
A bare wooden floor and no window coverings.
A carpeted floor and curtains on the windows.
A tile floor and metal blinds on the windows.
A concrete floor and wooden shutters on the windows.
Question
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d) Why are some materials better at keeping noise levels down than others?
d) Why are some materials better at keeping noise levels down than others?