Sound

1

What do we need to measure to calculate the speed of sound in air?

2

What can be used to represent sound waves on a screen?

3

Which property of a wave does the pitch of a sound refer to?

4

What is the frequency range of human hearing?

5

What is noise pollution?

6

What unit is sound level measured in?

7

Long-term exposure to sound above what sound level is likely to cause hearing damage?

8

What is the sound level of a pneumatic drill 5 metres away?

9

What is ultrasound?

10

Which of the following is a possible use of ultrasound in medicine?