sound & waves Flashcards
1
Q
How fast is sound?
A
air- 343 m/s
water- 1420 m/s
steel- 5000 m/s
2
Q
Mechanical waves
A
waves that move through matter (sound)
3
Q
Electromagnetic waves
A
waves that do not need matter to move (light)
4
Q
Longitudinal wave
A
the particle movement is parallel to the direction of wave movement (sound)
5
Q
Transverse wave
A
the particle movement is perpendicular to the direction of wave movement (light)
6
Q
Compressed wave
A
the particles are close together (crest)
7
Q
Rarefaction waves
A
the particles are spread out (trough)
8
Q
Amplitude
A
distance between crest/ trough and the middle
9
Q
pitch
A
low frequency = low pitch
high frequency = high pitch
10
Q
volume
A
low amplitude = low volume
high amplitude = high volume
