Deck 27: Color

Question 1

The LEDs that make up the color on some TV screens are

A)red, blue, yellow.
B)red, blue, green.
C)yellow, blue, green.
D)magenta, cyan, yellow.
E)red, green, yellow.

Answer 1

red, blue, green.

Question 2

The solar radiation curve is

A)a dent in the spherical Sun.
B)the path of the Sun as it circles Earth.
C)a plot of Sun's brightness versus frequency of emission.
D)a plot of sunlight colors versus their frequencies.
E)a plot of light intensity versus temperature of the Sun.

Answer 2

a plot of Sun's brightness versus frequency of emission.

Question 3

A red apple will appear black when illuminated with

A)blue light.
B)cyan light.
C)yellow light.
D)magenta light.
E)none of the above

Answer 3

cyan light.

Question 4

A banana will appear black when illuminated with

A)black light.
B)blue light.
C)red light.
D)green light.

Question 5

What characteristic of light mostly relates to color?

A)frequency
B)amplitude
C)both of these

Question 6

If sunlight were green instead of white, the most comfortable color to wear on a hot day would be

A)magenta.
B)yellow.
C)green.
D)blue.
E)violet.

Question 7

What color is fully transmitted in common window glass?

A)red
B)yellow
C)green
D)blue
E)all of the above

Question 8

A blueberry will look black when illuminated with

A)red light.
B)yellow light.
C)magenta light.
D)cyan light.
E)none of the above

Question 9

Different colors of light correspond to different light

A)velocities.
B)intensities.
C)polarities.
D)frequencies.
E)none of the above

Question 10

What color light is transmitted by a piece of blue glass?

A)red
B)white
C)blue
D)yellow
E)orange

Question 11

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

Question 12

When the frequency of light matches the natural frequency of molecules in a material, light is

A)absorbed.
B)transmitted.
C)reflected.
D)none of the above

Question 13

Light shines on a pane of green glass and a pane of clear glass. The temperature will be higher in the

A)clear glass.
B)green glass.
C)both the same

Question 14

You can get a sunburn while under the "shade" of a beach umbrella due to

A)reflected sunlight from the sand.
B)refracted sunlight from the water.
C)light scattering in the air.
D)none of the above

Question 15

A fast-moving ball is more easily seen if it is

A)red.
B)orange.
C)yellow-green.
D)green-blue.
E)violet.

Question 16

If sunlight were green instead of white, the most comfortable color to wear on a cold day would be

A)magenta.
B)yellow.
C)green.
D)blue.
E)violet.

Question 17

Strictly speaking, to say that an apple is red means that

A)an apple is red.
B)it appears red.
C)is, or appears makes no difference-red is red.

Question 18

Isaac Newton first became famous for his contributions to the understanding of

A)the laws of mechanics.
B)the law of gravity.
C)light.

Question 19

Which piece of glass will warm up quicker in sunlight?

A)colored glass
B)clear glass
C)both the same

Question 20

A piece of glass that appears red

A)absorbs or reflects all colors except red.
B)transmits red.
C)both of these
D)neither of these

Question 21

A mixture of red and green pigments appears

A)orange.
B)yellow.
C)magenta.
D)blue.
E)muddy-brown.

Question 22

The Sun is not seen as yellow-green because

A)it is not yellow-green.
B)it is small part of a mixture of other colors in sunlight.
C)its brightness is only slightly greater than the other colors.
D)our vision is not adapted to yellow-green.

Question 23

Which interacts more with high-frequency light?

A)large particles
B)small particles
C)both the same

Question 24

Colors seen on the cover of your physics book are due to color

A)addition.
B)subtraction.
C)either of these
D)neither of these

Question 25

The brightest color in sunlight is

A)red.
B)yellow.
C)yellow-green.
D)green.
E)violet.

Question 26

How many colors of ink are used to print full-color pictures?

A)one plus black
B)two plus black
C)three plus black
D)four plus black
E)six plus black

Question 27

Which interacts more with high-frequency sounds?

A)large bells
B)small bells
C)both the same

Question 28

Magenta light is a mixture of

A)red and blue light.
B)red and cyan light.
C)red and yellow light.
D)yellow and green light.
E)none of the above

Question 29

Stare at a red wall for a few minutes and then gaze at a white wall. Due to retina fatigue you see

A)more red.
B)cyan.
C)black.

Question 30

The dimmest part of sunlight is

A)red.
B)yellow.
C)yellow-green.
D)green.
E)violet.

Question 31

A mixture of cyan and yellow pigments appears

A)orange.
B)green.
C)magenta.
D)blue.
E)blackish-brown.

Question 32

When red, green, and blue lights shine on a golf ball, the shadows cast are

A)red, green, and blue.
B)black.
C)magenta, cyan, and yellow.
D)none of the above

Question 33

The physics underlying the redness of sunsets and the color of blue jays involves

A)scattered sunlight.
B)absorbed sunlight.
C)different processes for sunsets and blue jays.

Question 34

Complementary colors are two colors that

A)blend together.
B)are additive primary colors.
C)produce white light when subtracted.
D)produce white light when added.
E)are right for each other.

Question 35

Which is not a color?

A)yellow-green
B)black
C)both of these
D)neither of these

Question 36

Colors seen on some TV screens result from color

A)addition.
B)subtraction.
C)either of these
D)neither of these

Question 37

If three primary colors of light shine on a white wall and produce a white spot, the primaries must be

A)additive.
B)subtractive.
C)multiplicative.
D)divisive.

Question 38

The complementary color of blue is

A)red.
B)green.
C)yellow.
D)cyan.
E)magenta.

Question 39

If only one color is absorbed in the pigment of a particular blue paint, that color would be

A)red.
B)yellow.
C)green.
D)blue.

Question 40

Look at full-color photos in your textbook with a magnifying glass and you'll see inks of

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 these

Question 41

Distant bright snowy mountains appear yellowish because

A)they are far away.
B)blue has been scattered away from light reflected from the mountains.
C)the color yellow looks just right.
D)of nature's wonderful preferences.

Question 42

A setting Sun appears red due to

A)scattering of lower frequencies by larger particles in the air.
B)light's longer path through air at sunset.
C)lower frequencies of light emitted during sunset.
D)absorption by smaller particles in the air.

Question 43

If Earth's atmosphere were appreciably thicker, snow would appear

A)still white.
B)yellow.
C)blue.
D)ultraviolet.

Question 44

Distant dark mountains appear bluish because

A)they are far away.
B)yellow is being scattered.
C)you're looking at low-level blue sky between you and the mountain.
D)of nature's wonderful preferences.

Question 45

Compared to smaller clouds with small droplets, a big cloud with large droplets

A)absorbs more light.
B)is darker.
C)is more likely to produce rain.
D)all the above
E)none of the above

Question 46

The whiteness of clouds, unlike the blueness of the sky, primarily involves

A)medium sized particles.
B)reflection and refraction of sunlight.
C)seeds upon which condensation of cloud material forms.
D)water prisms.

Question 47

The darkness of clouds is due to

A)absorption.
B)often being in the shadow of another cloud.
C)both of these
D)neither of these

Question 48

If molecules in the sky scattered orange light instead of blue light, sunsets would be colored

A)orange.
B)yellow.
C)green.
D)blue.
E)none of the above

Question 49

A whitish sky is evidence that the atmosphere contains

A)predominantly small particles.
B)predominantly large particles.
C)a mixture of particle sizes.
D)water vapor.
E)pollutants.

Question 50

The sky is usually the deepest blue

A)just before a rainstorm.
B)during a rainstorm.
C)just after a rainstorm.
D)just before sunset.
E)when the air is humid.

Question 51

Red sunsets are due to light of lower frequencies that

A)are scattered from larger particles in the air.
B)are scattered from smaller particles in the air.
C)survive being scattered in the air.
D)are reflected by clouds and relatively large particles in the air.
E)appear reddish-orange to the eye.

Question 52

The redness of the lunar eclipse is due to

A)refraction of sunsets and sunrises all around Earth.
B)infrared light continually emitted by the Moon.
C)scattering of lower frequencies of light by the Moon.
D)dim light that is incident upon the Moon by Jupiter and other planets.

Question 53

On a planet where atmospheric gases are red, distant dark mountains would appear

A)bluish.
B)greenish.
C)yellowish.
D)reddish.
E)untinted.

Question 54

The sky is blue because air molecules in the sky act as tiny

A)mirrors which reflect only blue light.
B)optical tuning forks that scatter blue light.
C)sources of white light.
D)prisms.
E)none of the above

Question 55

If the atmosphere were about 40 times thicker, the Sun at noon would appear

A)red-orange.
B)orange-green.
C)green-blue.
D)blue-violet.

Question 56

Light travels slightly slower in the

A)upper atmosphere.
B)lower atmosphere.
C)neither of these

Question 57

On a planet in the solar system where the sky normally scatters light of lower frequencies, its sunsets would be

A)reddish.
B)yellow-greenish.
C)bluish.
D)whitish.

Question 58

On a planet where atmospheric gases are yellow, distant snow covered hills would look

A)bluish.
B)greenish.
C)yellowish.
D)reddish.
E)untinted.

Question 59

The greenish blue of water is evidence for the

A)reflection of greenish-blue light.
B)reflection of red light.
C)absorption of greenish-blue light.
D)absorption of red light.
E)interaction between green and blue frequencies of light.

Question 60

The atmosphere of Jupiter is more than 1000 km thick. From Jupiter's surface, the Sun at noon would appear

A)white.
B)faintly white.
C)not at all.
D)none of the above

Question 61

The part of the electromagnetic spectrum most absorbed by water is

A)infrared.
B)red.
C)cyan.
D)all about equally.

Question 62

A red crab very deep in water, where sunlight is dim, appears

A)red.
B)orange.
C)cyan.
D)brown.
E)no color-black.

Question 63

A white boat sunk in water where sunlight is dim appears

A)red.
B)yellow.
C)cyan.
D)no color-black.

Question 64

The part of the visible spectrum most absorbed by water is

A)infrared.
B)red.
C)cyan.
D)all about equally.

Question 65

The extraordinary blueness in lakes in the Canadian Rockies is the result of

A)high-altitude refraction of light.
B)glacial silt in the water scattering blue light.
C)the unique temperatures of these lakes throughout most of the year.
D)none of the above