Sound Unit Test

One of the bars has a higher pitch than all the others. Why?

• It doesn't vibrate at all.

• I makes the softest sound.

• It vibrates more slowly than the other pots.

• It vibrates more quickly than the other pots.

How does sound reach our ears?

• air cools down

• air heats up

• air vibrates

• air slows down

Pitch is

• how loud or soft a sound is

• energy caused by an object's vibrations

• the highness or lowness of a sound

Fast vibrations, squeezed together waves create

• high pitched sounds

• low pitched sounds

Sound waves are caused when a vibration moves through

• solid matter particles

• liquid matter particles

• air particles

• all of the above

Slow vibrations, stretched out waves create

• high pitched sounds

• low pitched sounds

Sound energy comes from

• echoes

• pitch

• vibrations

Sound is a form of ___________.

• light

• energy

• precipitation

• fuel

The picture show pots handing in Kelly's garden. She tapped each pot with a pencil. Which pot had the lowest pitch?

• 1

• 3

• 5

• 2

The closer the source of sound is, the louder it will be.

• True

• False