chapter 11 RAT

Question 1

Which does NOT belong in the family of electromagnetic waves?
A. Light.
B. Sound.
C. Radio waves.
D. X-rays.

Answer 1

B. sound

Question 2

The source of electromagnetic waves is vibrating
A. electrons.
B. atoms.
C. molecules.
D. energy fields.

Answer 2

A. electrons

Question 3

The slowing of light in transparent materials has to do with
A. the time required for the absorption and re-emission of light.
B. the density of materials.
C. different frequency ranges in materials.
D. the fundamental difference between light and sound.

Answer 3

A. the time required for the absorption and re-emission of light

Question 4

Whether a particular surface acts as a polished reflector or as a diffuse reflector depends on
A. the color of the reflected light.
B. the brightness of the reflected light.
C. the wavelength of light.
D. the angle of incoming light.

Answer 4

C. the wavelength of light

Question 5

When a light ray passes at an angle from water into the air, the ray in the air bends
A. toward the normal.
B. away from the normal.
C. either away from or toward the normal.
D. parallel to the normal.

Answer 5

B. away from the normal

Question 6

Refracted light that bends away from the normal is light that has
A. slowed down.
B. speeded up.
C. bounced.
D. diffracted.

Answer 6

B. speeded up

Question 7

The colors on the cover of your physics text are due to
A. color addition.
B. color subtraction.
C. color interference.
D. scattering.

Answer 7

B. color subtraction

Question 8

The redness of a sunrise or sunset is due mostly to light that hasn’t been
A. absorbed.
B. transmitted.
C. scattered.
D. polarized.

Answer 8

C. scattered

Question 9

A rainbow is the result of light in raindrops that undergoes
A. internal reflection.
B. dispersion.
C. refraction.
D. all of these

Answer 9

D. all of these

Question 10

Polarization occurs for waves that are
A. transverse.
B. longitudinal.
C. either of these
D. neither of these

Answer 10

A. transverse