A rarefaction is generated when particles move _______.

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

The elasticity of a substance describes how fast or slow its particles bounce back-and-forth as ______________ move through the object.

Which physical property of a medium is defined by how close the particles of the substance are to each other?

Which temperature causes sound to travel more slowly?

Which of these is not a property of a sound wave?

The amount of energy a sound wave carries per second through a unit of area is its ______________.

The ____________ of a wave increases with increased energy.

Loudness of waves is measured in ______________.

The maximum safe level for loudness is __________.

Frequency of waves is measured in __________.

High frequency sounds have ___________ pitch.

The apparent change in frequency as a wave source moves in relation to the listener is the ___________.

______________ is produced by vibrations.

The highness or lowness of a sound is its ____________.

A change in frequency results in a change of wave length; a change in amplitude does not.

The apparent change in frequency as a wave source moves in relation to the listener; the closer a person is to the source of the wave the higher the pitch appears to be

How are frequency and pitch related?

How are loudness and intensity related?