Loudness and pitch G9

Sound waves travel as ________ waves.

• transverse

• electromagnetic

• longitudinal

• surface

Sound is made when a source of energy forces the matter to:

• shake

• vibrate

• move

• stay still

A back-and-forth motion causing particles to move close together generates a ______________.

• rarefaction

• surface

• transverse

• compression

A rarefaction is generated when particles move ___________.

• together

• closer

• under

• apart

In which of these types of media will sound travel fastest?

• solid

• liquid

• gas

• vacuum

Which temperature causes sound to travel more slowly?

• hot

• cold

The ________ of a wave increases with increased energy.

• wave length

• amplitude

Loudness of waves is measured in ____________.

• Hertz

• Decibels

• Watts

• meters/second

Frequency of waves is measured in ___________.

• Hertz

• Decibels

• Watts

• meters/second

High frequency sounds have __________ pitch.

• high

• low