Amplitude
_____________ determines how loud or soft a sound is.
Volume
Records produce sound due to the needle . . . .
vibrating
What is one part of the ear that can be damaged and how so?
ear drum - burst from loud noise
cilia - fold over from loud noise
Give an example of a sound with high pitch.
birds, women, trumpet, etc
What is an example of something with a low amplitude
whisper, insect, etc
To increase amplitude you cause the sound producer to . . .
hit harder/ apply more force
Describe the motion of particles in air when sound passes through them
vibrating back and forth
What part of the ear interprets different frequencies?
Cochlea
If an ambulance is moving away from you while playing its siren, you would hear a . . . (high or low)
low sound
To increase the amplitude of a drum, what can be done?
hit it harder/ apply more force
To increase frequency you cause the sound producer to . . .
vibrate faster
A/an __________ is a material that carries sound waves and a/an _________ does not carry sound waves.
A medium is a material that carries sound waves and a vacuum does not carry sound waves.
What do the 3 small bones do for the sound
amplify/focus
What is one way you can change the pitch on a trumpet?
increase lip vibrations, change valve combination
Draw a sound wave with low amplitude
short waves
True or False. If there was a loud explosion in space we would not hear it.
True. There is no matter in space, so the sound waves would not have anything to bounce off of.
What type of matter do sound waves travel best through? Solid or Air?
Sound waves travel best through solids because the molecules are close together.
What is the purpose of the ear drum?
Receives/ picks up sound
Draw a sound wave with low frequency
wide bunches
Draw a sound wave with high amplitude
Tall Waves
In order for a sound to be produced, what two components must be present?
A force causing a vibration
Sound travels in packets of energy referred to as . . .
Compressions
What is the purpose of the outer ear (think cone)
focuses sound and protects ear
Draw a sound wave with high frequency
close bunches