9.1 Measuring waves Flashcards
1
Q
Longitudinal waves
A
The particles of the medium oscillate at the same direction as the wave
2
Q
Transverse
A
The particles of the medium oscillate at 90 degree angles/perpendicular to the direction of the wave
3
Q
Amplitude
A
High amplitude means high sound
4
Q
Wavelength
A
Distance from one point of a wave to the same point (on the next wave)
5
Q
Frequency
A
Number of waves that pass a point every second. (Higher the frequency, higher the pitch)
6
Q
Period
A
Time for a complete wave
7
Q
what do waves transfer?
A
Waves transfer energy and information without transferring matter
8
Q
wavespeed (v)
A
frequency (f) x wavelength (λ)
9
Q
frequency
A
1/time period
10
Q
Human hearing range
A
20hz-20000hz
11
Q
Measure speed of sound in air
A
- Stopwatch (time)
- Wooden blocks (sound)
- repeat many times but in different distances
