Year 8 Sound Flashcards
1
Q
What is sound produced by
A
Vibrations
2
Q
What are sound waves detected by
A
The ear drum
3
Q
What is the frequency of a sound wave measured in
A
Hertz (Hz)
4
Q
What does sound cause the ear drum to do
A
Vibrate
5
Q
What is a reflected sound wave called
A
Echo
6
Q
What type of waves are sound waves
A
Longitudinal
7
Q
What is the auditory range of a human
A
20Hz - 20000Hz
8
Q
How do you find the speed of sound in air
A
Time how long it takes the sound wave eto reach a point from a known distance away
