Unit 2 Test-Light and Sound

Front

What causes all sounds?

Back

All sounds are caused by vibrations.

Front

What is an example of using sound to send a message?

Back

A phone ringing.

Front

Which instrument makes sound with vibrating strings?

Back

Guitar.

Front

What is created when an object blocks light?

Back

Shadow.

Front

How does light travel?

Back

Light travels in a straight line.

Front

What do we call the movement of sound through the air?

Back

Sound waves.

Front

What is the term for a dark area caused by blocking light?

Back

Shadow.

Front

What is an example of light?

Back

The sun.

Front

What do we call the ability to see things?

Back

Vision.

Front

What is a source of sound?

Back

A musical instrument.