Unit 7 Review

Mechanical waves (like sound) cannot travel through...

• metal

• a tree

• empty space (vacuum)

• a door

Which wave has the lowest frequency?

• A

• B

• C

• D

Which letter represents the crest?

• A

• B

• C

• D

What travels through a wave?

• mass

• energy

• mass and energy

• neither mass nor energy

Which is an example of a longitudinal wave?

• x ray

• microwave

• sound wave

• water wave

The two waves have different...

• amplitudes

• speeds

• wavelengths

• frequencies

Which letter represents the trough?

• A

• B

• C

• D

Amplitude is the distance between

• the crest and the trough

• each wave

• the middle point of a wave and the clouds

• the crest or trough and the middle point of the wave

The distance from one crest to the next crest in a wave is

• wavelength

• crest

• trough

• amplitude

In longitudinal waves, the parts where the coils are spread apart are called what?

• rarefactions
• compressions
• mechanicals
• longitudes