# Sound

National 4/5 S3 review of basic wave/sound properties and units

The distance from the rest position to the crest or trough of a wave
amplitude
1 of 11
How far a wave travels every second
speed
2 of 11
The number of waves that pass a point in one second
frequency
3 of 11
The shortest distance before a wave pattern repeats
wavelength
4 of 11
The unit used to measure sound levels
decibels
5 of 11
The type of sound used to study unborn babies
ultrasound
6 of 11
340 m/s is the speed of ----- in air?
sound
7 of 11
The unit of frequency
hertz
8 of 11
Both wavelength and amplitude can be measured in........
metres
9 of 11
What sound cannot travel through?
vacuum
10 of 11
If 20 waves pass in 4 seconds the frequency is ----- Hz
five
11 of 11

## Other cards in this set

### Card 2

#### Front

How far a wave travels every second

speed

### Card 3

#### Front

The number of waves that pass a point in one second

### Card 4

#### Front

The shortest distance before a wave pattern repeats

### Card 5

#### Front

The unit used to measure sound levels