Sound

Definitions

100

This is a vibration that our ears hear and a form of energy.

Sound

200

This is how sound is measured.

Decibels

300

These are high pitched sounds that people can't hear.

Ultrasonic sounds

400

This is sound bouncing, or reflecting off of a surface.

Echo

500

This is how much energy a sound wave has.

Amplitude

Properties

100

Sound T______

Travels

200

Sound can be R___________

reflected

300

Sound can be A_________

absorbed

400

Sound is caused by _________

vibrations

500

Sound can be M______ such as through pitch and loudness

Modified

Music

100

An example of a string instrument

harp, guitar, violin

200

This type of instrument family makes noise when hit or struck

percussion

300

This instrument family makes noise when someone blows air into them.

wind

400

This instrument family includes the tuba and saxophone.

Winds or brass

500

All of the instrument families together makes up an O________

orchestra

How We Hear

100

Your ear picks up __________ in order to hear

vibrations

200

This part of your ear catches the sound wave.

Outer ear

300

This many bones in the middle ear move.

Three

400

Thousands of tiny _____ wave back and forth, connect to nerves, and send signals to the brain.

hairs

500

Sound waves push against the _________ which makes is vibrate.

ear drum

Random

100

These people are trained to test hearing.

Audiologists

200

Any sound that causes issues for people and things.

Noise Pollution

300

This is a form of sonar that bats and dolphins use to travel and find food.

Echolocation

400

Two ways your body tries to protect your ears and hearing

Wax and the ear drum is tucked inside your head

500

Sounds of _____ decibels or higher can cause ear pain.

120