Sound Flashcards
What causes sound?
Vibrations
What is the amplitude of a wave?
The height of the wave
What is the frequency of a wave?
How many waves pass a point every second
If the amplitude of a wave increases, what happens to the sound?
It gets louder
If the amplitude of a wave decreases, what happens to the sound?
It gets quieter
If the frequency of a wave increases, what happens to the sound?
It gets higher pitched
If the frequency of a wave decreases, what happens to the sound?
It gets lower pitched
What happens to the ear drum when you listen to very loud sounds?
It vibrates with bigger vibrations and may pop/burst
What travels faster; light or sound?
Light
Which part of the ear passes the vibrations from the ear drum to the cochlea?
The ossicles (small bones)
What carries the electrical signal from the cochlea to the brain?
The auditory nerve
Does sound travel faster in solids, liquids or gases? Why?
Solids because the particles are closer together and so can pass the vibrations on faster.
What is the equation we can use to calculate the speed of sound if we know the time and distance?
Speed = distance / time
What part of our ear vibrates first?
Ear drum
