FINAL: CH8

Question 1

Polarization is a property of
A.) transverse waves
B.) longitudinal waves
C.) both
D.) neither

Answer 1

A.) transverse waves

Question 2

When white light goes from air into water, the color that refracts the most is
A.) red
B.) orange
C.) green
D.) violet
E.) all refract the same amount

Answer 2

D.) violet

Question 3

Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at
A.) different speeds
B.) the same speed
C.) decreased speeds

Answer 3

B.) the same speed

Question 4

Rainbows exist because light is
A.) reflected
B.) refracted
C.) both
D.) neither

Answer 4

C.) both

Question 5

A primary rainbow is brighter than a secondary rainbow because
A.) sunlight reaching it is more intense
B.) there is one less reflection inside the water drops
C.) larger drops produce primary rainbows
D.) the secondary bow is a dim reflection of the primary rainbow
E.) none of the above

Answer 5

B.) there is one less reflection inside the water drops

Question 6

Distant dark-colored hills appear blue due to the color of the
A.) atmosphere between the observer and the dark hills
B.) selectively reflected light that reaches a distant observer
C.) reflected light that survives scattering
D.) sky that is reflected off the hills

Answer 6

A.) atmosphere between the observer and the dark hills

Question 7

The inks used in printing the full-color photos in this book are
A.) red, green, and blue
B.) red, green, blue, and black
C.) magenta, cyan, and yellow
D.) magenta, cyan, yellow, and black
E.) none of the above

Answer 7

D.) magenta, cyan, yellow, and black

Question 8

A mixture of blue and yellow tiny dots on a printed page appears
A.) orange
B.) yellow
C.) magenta
D.) blue
E.) green

Answer 8

E.) green

Question 9

The complementary color of blue is
A.) red
B.) green
C.) yellow
D.) cyan
E.) magenta

Answer 9

C.) yellow

Question 10

Complementary colors are two colors that
A.) share the same color scheme
B.) are additive primary colors
C.) are subtractive primary colors
D.) produce white light when added

Answer 10

D.) produce white light when added

Question 11

The color humans are most sensitive to is
A.) red
B.) orange
C.) yellow-green
D.) green-blue
E.) violet

Answer 11

C.) yellow-green

Question 12

The color of an opaque object is the same as the light that is
A.) transmitted
B.) absorbed
C.) reflected
D.) all of the above
E.) none of the above

Answer 12

C.) reflected

Question 13

Different colors of light correspond to different light
A.) velocities
B.) intensities
C.) polarities
D.) frequencies
E.) none of the above

Answer 13

D.) frequencies

Question 14

Which has the higher frequency?
A.) red light
B.) green light
C.) blue light
D.) all the same

Answer 14

C.) blue light

Question 15

Refraction causes the bottom of a swimming pool to appear
A.) deeper
B.) more shallow
C.) neither

Answer 15

B.) more shallow

Question 16

A beam of light emerges from water into air at an angle bent
A.) towards the normal
B.) away from the normal
C.) in a direction parallel to the normal
D.) in a direction perpendicular to the normal
E.) not at all

Answer 16

B.) away from the normal

Question 17

Atmospheric refraction makes the daylight hours
A.) longer
B.) shorter
C.) neither

Answer 17

A.) longer

Question 18

A rough surface for infrared waves may be polished for
A.) radio waves
B.) light waves
C.) both
D.) neither

Answer 18

A.) radio waves

Question 19

Compared to the wavelength of incident light, diffuse reflection occurs when the size of surface irregularities is
A.) smaller
B.) larger
C.) about the same

Answer 19

B.) larger

Question 20

A yellow-white candle flame reflected from a piece of red glass shows two images, one from each surface.
A.) both images are yellow-white
B.) one image is yellow-white and the other image is red
C.) both images are red
D,) both images are reddish yellow

Answer 20

A.) both images are yellow-white

Question 21

If you walk toward a mirror at a certain speed, the relative speed between you and your image is
A.)  half your speed
B.) your speed
C.) twice your speed
D.) none of the above

Answer 21

C.) twice your speed

Question 22

The amount of light reflected from the front surface of common window glass is about
A.) 4%
B.) 8%
C.) 40%
D.) 92%
E.) 96%

Answer 22

A.) 4%

Question 23

The frequency of an electromagnetic wave and the frequency of the vibrating electrons that produce it are
A.) nearly the same
B.) the same
C.) quite different

Answer 23

B.) the same

Question 24

Which of these has a higher frequency than visible light?
A.) radio wave
B.) microwave
C.) infrared wave
D.) ultraviolet wave

Answer 24

D.) ultraviolet wave

Question 25

``` Which of these has the longest wavelength? A.) radio waves B.) microwaves C.) visible light D.) gamma rays ```

Answer 25

A.) radio waves

Question 26

``` Electromagnetic waves can travel in A.) a vacuum B.) air C.) water D.) glass E.) all of the above ```

Answer 26

E.) all of the above

Question 27

``` Both sound and light can travel in A.) a vacuum B.) water C.) both D.) none of the above ```

Answer 27

B.) water

Question 28

``` Which of the following is fundamentally different from the others? A.) sound waves B.) xrays C.) gamma rays D.) light waves E.) radio waves ```

Answer 28

A.) sound waves

Question 29

``` Both a radio wave and light wave have identical A.) speeds B.) wavelengths C.) frequencies D.) all of the above E.) none of the above ```

Answer 29

A.) speeds

Question 30

``` If a light signal and a radio signal were emitted simultaneously from the moon, the first signal to reach Earth would be A.) radio B.) light C.) both D.) neither ```

Answer 30

C.) both

Question 31

The natural frequency of atoms in glass is in the A.) infrared region of the spectrum B.) visible region of the spectrum C.) ultraviolet region of the spectrum

Answer 31

C.) ultraviolet region of the spectrum

Question 32

In the law of reflection, the incident ray, the reflected ray, and the normal between them A.) lie in the same plane B.) may or may not lie in the same plane C.) lie in planes that are perpendicular to one another

Answer 32

A.) lie in the same plane

Question 33

``` Object and image for a plane mirror lie A.) along the same plane B.) equal distances from the mirror C.) at right angles to each other D.) all of the above E.) none of the above ```

Answer 33

B.) equal distance from the mirror