topic1 lesson1 descibe sound

1.

Sound is ـــــــــــــــــــــــــــــــــــــ you can hear.

 

 

 

• energy

• matter

• air

• Water

The object mustـــــــــــــــــــــــــــــــــــــ to make sound.

• grow

• sleep

• eat

• vibrate

What does vibrate mean?

• move back and forth very quickly

• move back and forth very slowly

• move in a straight line very quickly

• move in a straight line very slowly

Why do animals use sound?

• To send light

• To send heat

• To send message

• To send air

7.  Pitch means how ـــــــــــــــــــــــــــــــــــــ or ـــــــــــــــــــــــــــــــــــــ a sound is.

                                                         

• high, low

• loud, soft

Fire truck makes ـــــــــــــــــــــــــــــــــــــ sound.

• soft                                                                

• loud

4. The objects make sound when they vibrate.

• true

• false

Sound of kittens is loud.

• true

• false

When you bang a drum, you hear loud sound.

• true

• false

Vibrate is to move back and forth slowly.

• true

• false