sound

Sound makes materials vibrate.

• 
• 

Is how high or low a sound is.

• volume

• pitch

• wave

Is how loud or soft a sound is.

• waves

• pitch

• volume

To move back and forth or up and down.

• pitch

• waves

• vibration

is a vibration that travels through things and makes a noise.

• sound waves

• waves

• vibration

A mobile phone …………people to communicate over a long distance.    

• Don't allow

• Allow

  Which activity will not make a sound?

• clap hand

• talk

• sit

Vibrating materials make sound.

• 
• 

     Fast vibrations cause....................... sound.

• Low

• High

• Medium

LARGE vibrations cause LOUD sound.

• True

• False