Topic 1lesson 1 describe sound

………. is energy you can hear.

• Communicate

• Sound

• Water

• Air

What does vibrate mean?

• Move back and forth very quickly

• Move in straight line

• Move back and forth slowly

Why do animals use sound ?

• To send air

• To send messages

• To send heat

• To send light

The object must ……….. to make sound .

• grow

• sleep

• vibrate

• eat

Pitch means how ……….or ……… sound is.

• high-low

• loud-soft

Volume is how …….or………a sound is .

• high- low

• loud -soft

What happens first when you bang a drum?

• Vibrates

• Makes sound

Fire truck makes ………sound .

• loud

• soft

The objects are at rest can make sound .

• True

• False

Whispering makes loud sound.

• True

• False