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
if you strum a guitar string harder, what happens?
The volume gets louder
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 loud or quiet a sound is, is called the ____________.
volume
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
You can listen to sounds up to ____ decibels before it damages your ears.
85dB
What is an example of a high pitch, loud volume and long duration sound?
An alarm, firetruck, etc.