Parts of the Ear
Sound waves cause the eardrum to __________.
vibrate
Sound is made when things ____________.
vibrate
A thin piece of skin stretched tight like a drum to separate the outer ear and middle ear is called the ______________.
ear drum
How loud or quiet a sound is, is called ____________.
volume?
The three parts of the ear are:
Outer ear, middle ear, inner ear
The cochlea is part of the ____ ear.
Inner
If a noise is too loud you should...
Move away, turn it down, wear earplugs or noise cancelling headphones.
A decibel is
The unit of measurement for sound
Short and fast sound waves make a __________ pitch.
high?
a mouse has a ____ pitch, a bear has a ____ pitch.
High, Low
Sound waves enter the _______ (outer or inner) ear.
outer ear
The highness or lowness of sounds is called its _______.
pitch
How high or low a sound is, is called the ____________.
pitch
Long slow sound waves make a ______ pitch.
low
An example of a natural sound
leaves in the wind, bird chirping, water, etc.
What is located inside the cochlea?
liquid and tiny hairs
duration
The noise something makes that travel through the air as vibrations is called __________.
sound waves
An example of a man-made sound is:
A door closing, people talking, a fan, etc.
lower
we hear things because our ears send signals to the ________.
brain
a high pitch causes a _____ vibration
fast
When an object moves quickly back and forth is called ____________.
vibration
80dB
The difference between sound and noise is...
Noise is very loud and unpleasant, sound is other things we hear