PS #4 Waves, Sound, & Light Pre Test

Sound is produced by

• Electromagnetic Waves

• Vibrations of molecules

• Transverse Waves

A disturbance that transfers energy from one place to another without transferring matter.

• wave

• trough

• sound

• crest

When a sound wave experiences reflection, we hear

• a louder sound

• a quieter sound

• echo

• nothing

A medium is...

• a substance that transmits waves.

• the movement of material in front of a sound wave.

• a requirement for transmission of light waves.

• the density of air in a particular setting.

True or False: Sound travels faster through solids than through liquids

• true

• flase

Which medium will transmit sound the fastest?

• ocean water

• perfumed air

• solid iron

• a sponge

What state of matter allows sound to travel the slowest?

• solid

• liquid

• gas

Sound is able to travel faster in solids than in air because the molecules in a solid are

• closer together than air molecules

• more easily moved than air molecules

• moving faster than air molecules moving faster than air molecules

• moving faster than air molecules moving faster than air molecules

A part in a longitudinal wave where the particles are spread apart

• compression

• rarefaction

• crest

• trough

The part of a longitudinal wave where the particles of the medium are close together.

• rarefaction

• compression

• crest

• trough