Unit 4 review

A wave that travels perpendicular to the energy of the wave is called __________________

• Transverse wave

• Mechanical wave

• Earthquake wave

• Seismic wave

Which absorb most wavelengths found in white light?

• Dark colors

• Light colors

How is wavelength measured in a longitudinal wave?

• crest to trough

• crest to crest

• compression to compression

• rarefaction to compression

Radio waves have the lowest _______________________.

• Amplitude

• Frequency

• wavelength

• energy

Due to the Law of Reflection ________________________.

• The direction of the light ray stays the same at all times.

• The speed of the ray increases than decreases.

• The angle at which the light ray strikes the mirror equals the angle at which it reflects back.

• The direction of the ray stays the same sometimes.

Sound travels quicker in a ________________.

• Solid

• Liquid

• Gas

• Vacuum

If you change the pitch of a note, will it change the length?

• Yes

• No

• Maybe

• I don't know

Can a light wave travel without a medium?

• No

• Yes

• Sometimes

• Not sure

A lens focus light by ________________.

• Reflecting

• Refraction

• Diffraction

• Absorption

What kind of wave can travel through a vacuum?

• Sound

• Light

• Electromagnetic

• Mechanical