Pretest Sounds 8

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 wave

• transverse wave

• compression

A rarefaction is generated when particles move _______.

• together

• apart

• closer

• under

Sound waves cannot travel through _________.

• paper

• milk

• hydrogen

• empty space

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

• solid

• liquid

• gas

• vacuum

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

• vibrations

• chemicals

• electrons

• surface wave

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

• elasticity

• temperature

• density

• amplitude

Which temperature causes sound to travel more slowly?

• hot

• cold

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

• intensity

• elasticity

• loudness

• pitch