Sound and waves Flashcards
1
Q
What influences the speed of a wave?
A
Elasticity and Density of a medium
2
Q
What is does sound need to propogate?
A
A medium
3
Q
Why is the reflection of sound softer that the original sound?
A
Some of the sound is absorbed by the reflecting surface
4
Q
Pitch relationship with frequency of sound?
A
directly proportional
5
Q
Greater the sound…
A
louder the sound
6
Q
What sound can the human ear hear?
A
20 - 20 000 Hz
7
Q
Higher Note frequency and wave length?
A
Frequency: higher
Wavelength: shorter
8
Q
Lower Note frequency and wave length?
A
Frequency: lower
Wavelength: longer
