UNIT 8 SOUND WAVES

How do sounds travel through the air?

• As waves.

• As raindrops.

Waves are up and down or to- and fro- movements that travel away from a source.

• True

• False

Sound waves are made by dance moves pushing the air to and fro.

• true

• false

When you hit a drum, the skin vibrates up and down very ............

• slowly

• quickly

• carefuly

Sound waves travel only through the air.

• TRUE

• FALSE

Space is a VACUUM. This means there is a lot of trash.

• TRUE

• FALSE

In space it is perfectly.......

• dirty

• quiet

• noisy

Without air, there is nothing to carry the sound waves.

• true

• false