Measuring waves Flashcards
1
Q
Transverse waves
A
Oscillate perpendicular to the direction of travel
2
Q
Longitudinal waves
A
Oscillate parallel to the direction of travel
3
Q
Amplitude
A
The maximum distance moved by a vibrating object from its equilibrium position
4
Q
Wavefront
A
An imaginary surface representing points of a wave that are at the same point on their cycles
5
Q
Frequency
A
The number of waves per second
6
Q
Wavelength
A
The distance from one point on a wave to the same point on the next
7
Q
Time period
A
The time it takes for a source to produce one wave
8
Q
What do waves transfer and what do they not?
A
They transfer energy and information without transferring matter
9
Q
V
A
f*λ
10
Q
1
A
f*T
11
Q
What is the human hearing range?
A
20Hz-20kHz
12
Q
How to measure the speed of sound
A
- Stand at least 50m away from a large wall or building
- Bang the clapper board and listen for an echo
- bang the clapper board each time you hear an echo
- Ask a friend to time 20 claps
- v=d/t 50x20x2/t=v around 343m/s
13
Q
Greater frequency
A
Higher pitch
14
Q
Greater amplitude
A
Louder sound
