ch. 27 homework study set

Compared to smaller clouds with small droplets, a big cloud with large droplets a. is darker. b. is more likely to produce rain. c. absorbs more light. d. all the above e. none of the above

D

What is the color of the peak frequency of solar radiation when it is plotted versus wavelength? a. Red b. Infrared c. Violet d. Yellow-green

D

Complementary colors are two colors that a. produce white light when added. b. are right for each other. c. produce white light when subtracted. d. blend together.are additive primary colors.

A

Magenta light is a mixture of a. red and blue light. b. yellow and green light c. red and cyan light. d. red and yellow light e. none of the above

A

On a planet in the solar system where the sky normally scatters light of lower frequencies, its sunsets would be a. bluish. b. whitish. c. reddish. d. yellow-greenish.

A

What part of the visible electromagnetic spectrum is most absorbed by water? a. Red b. Violet c. Green d. Blue

A

When something is painted red, what color is most absorbed? a. Cyan b. Magenta c. Yellow d. Green

A

Which warms more quickly in sunlight - a colorless or a colored piece of glass? Why? a. A colored piece of glass warms quickest because it absorbs more frequencies of light, thus converting the energy to temperature. b. A clear piece of glass warms quickest because it absorbs more frequencies of light, thus converting the energy to temperature. c. A colored piece of glass warms quickest because the colored glass reflects some wavelengths of light. d. A colored piece of glass warms quickest because the clear glass reflects all wavelengths equally.

A

Why does the color of sunsets vary from day to day? a. Different particles in the air each day scatter and absorb different wavelengths of light, thus giving the sky many different colors. b. The distance through the atmosphere that light travels at sunset varies during different seasons of the year. c. Pollutant pigments from humans and volcanoes absorb but do not scatter certain colors, thereby giving the sky a different color at each sunset. d. The color of the sunset changes everyday due to pressure changes in the atmosphere.

A

A red apple will appear black when illuminated with a. magenta light. b. cyan light. c. yellow light. d. red light. e. None of the above.

B

If sunlight were green instead of white, the most comfortable color to wear on a cold day would be a. violet. b. magenta. c. blue. d. yellow. e. green.

B

If the atmosphere were about 40 times thicker, the Sun at noon would appear a. orange-green. b. red-orange. c. blue-violet. d. green-blue.

B

The redness of the lunar eclipse is due to a. dim light that is incident upon the Moon by Jupiter and other planets. b. refraction of sunsets and sunrises all around Earth. c. infrared light continually emitted by the Moon. d. scattering of lower frequencies of light by the Moon.

B

What color light is transmitted through a piece of red glass? a. Green b. Red c. Blue d. All colors except for red

B

What color results when red is subtracted from white light? a. Yellow b. Cyan c. Magenta d. Ultraviolet

B

What happens to light when it falls upon a material that has a natural frequency equal to the frequency of the light? a. It is reflected. b. It is absorbed. c. It is transmitted. d. It is scattered.

B

What is the effect on the color of a cloud when it contains an abundance of large droplets? a. The cloud becomes bright. b. The cloud becomes dark. c. The cloud becomes reddish. d. The cloud becomes transparent.

B

When white light is incident upon green glass the color that emerges is _________. a. red, yellow, and green b. green c. yellow d. red

B

Which has the higher frequency, red light or blue light? a. They both have no frequency, but they have different magnitudes of energy. b. Blue c. Red d. They both have the same frequency, but they have different wavelengths.

B

Which interacts more with high-frequency light? a. large particles b. small particles c. both the same

B

Why are red, green, and blue called the additive primary colors? a. Adding red plus green plus blue gives white light. b. Adding appropriate amounts of red plus green plus blue lights can produce almost any color of the spectrum. c. Adding red plus green light gives yellow, and adding yellow to blue light gives white. d. Adding red plus green plus blue pigments gives black.

B

Why does the Sun look reddish at sunrise and sunset but not at noon? a. There are more pigment molecules in the atmosphere at sunrise and sunset that absorb blue light. b. The longer path length of sunlight at sunrise and sunset scatters out more blue light c. The high temperature of air molecules at noon absorbs more red light. d. There are dewdrops in the air at dawn and dust in the air at sunset, and both color the air red.

B

A banana will appear black when illuminated with a. black light. b. red light. c. blue light. d. green light.

C

Clouds are white due to _________. a. interference b. absorption c. scattering d. refraction

C

The color of an opaque object is the same as the light that is a. absorbed. b. transmitted. c.reflected. d. all of the above e. none of the above

C

The sky is blue due mainly to atmospheric _________. a. interference b. reflection of water c. scattering d. absorption

C

What happens to light when it falls upon a material that has a natural frequency above or below the frequency of the light? a. Nothing happens. b. It is absorbed and not reemitted. c. It is reemitted. d. It is absorbed and reemitted at a different frequency.

C

What is the resulting color if equal intensities of red light and cyan light are combined? a. Magenta b. Pink c. White d. Green

C

What part of the electromagnetic spectrum is most absorbed by water? a. Red b. Green c. Infrared d. Blue

C

When red, green, and blue light are combined, the result is _________. a. green b. yellow c. white d. red

C

A sunset appears red in color due to _________. a. red light scattering b. the interference of other colors c. green light being cancelled d. higher frequencies of light scattered away

D

When a red rose is held in white light, the color of its petals appears _________. a. green b. yellow c. violet d. red

D

Which of these colors of light represents the lowest visible frequency? a. Yellow. b. Violet. c. Green. d. Red.

D

Why are red and cyan called complementary colors? a. They can be added together to give green. b. They can be added together to give black. c. They can be added together to give yellow. d. They can be added together to make white light.

D

Why does the sky normally appear blue? a. Air molecules have resonances in the red, so they absorb red and leave only the blue. b. The human eye is much more sensitive to blue than red, so the sky appears blue even though it is actually white. c. Air molecules have resonances in the infrared, so they scatter blue light more than red light. d. Air molecules have resonances in the ultraviolet, so they scatter blue light more than red light.

D