P12 Flashcards
1
Q
Amplitude
A
The amplitude of a wave is the maximum displacement of a point on the wave from its undisturbed position.
2
Q
Frequency
A
The number of waves passing a fixed point per second.
3
Q
How to measure the speed of sound in air.
A
Speed= distance/time
4
Q
How to work out a period
A
Period= 1/Frequency,f (hertz,Hz)
5
Q
Refraction
A
Is the change of the direction in which the are travelling when crossing a boundary between one median to another.
6
Q
How to work out speed in sound
A
Speed= distance to the wall and back/time delay
