Conceptual Physics Chapter 27

7) Which will warm up quicker in sunlight? A) a piece of colored glass B) a piece of clear glass C) both the same

A) a piece of colored glass

2) 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 these

A) absorbed.

14) Colors seen on TV results from color A) addition. B) subtraction. C) either of these D) neither of these

A) addition.

10) If three primary colors of light are to shine on a white wall to produce a white spot, the primaries must be A) additive. B) subtractive. C) multiplicative. D) divisive.

A) additive.

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

A) atmosphere between the observer and the hills.

44) On a planet where atmospheric gases are yellow, distant snow covered hills would look A) bluish. B) greenish. C) yellowish. D) reddish. E) untinted.

A) bluish.

32) The part of the electromagnetic spectrum most absorbed by water is A) infrared. B) lower frequencies in the visible. C) middle frequencies in the visible. D) higher frequencies in the visible. E) ultraviolet.

A) infrared.

1) Color depends on what characteristic of light? A) its frequency B) its amplitude C) both of these

A) its frequency

37) 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.

A) magenta.

30) The whiteness of clouds is evidence in the clouds for a variety of A) particle sizes. B) molecules. C) "seeds" upon which condensation of cloud material forms. D) light intensities. E) water prisms.

A) particle sizes.

13) Magenta light is really 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 these

A) red and blue light.

41) If the atmosphere were about 40 times thicker, at noon the sun would appear A) red-orange. B) orange-green. C) green-blue. D) blue-violet. E) none of these

A) red-orange.

45) The redness of the lunar eclipse is evidence for the A) refraction of sunsets and sunrises all around the world. B) infrared light continually emitted by the moon. C) scattering of lower frequencies of light by the moon. D) faintly radiating atoms in our own atmosphere when sunlight is not incident upon them. E) dim light that is incident upon the moon by Jupiter and other planets.

A) refraction of sunsets and sunrises all around the world.

25) Sunsets are red, blue jays are blue; the reason's the same: A) scattered sunlight - nothing new. B) pigments that reflect in the blue. C) aerosols and all such goo. D) no one knows, but it is true.

A) scattered sunlight - nothing new.

8) 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) Neither - it will be the same in each.

B) green glass.

19) A mixture of cyan and yellow pigments appears A) orange. B) green. C) magenta. D) blue. E) blackish brown.

B) green.

28) The sun is more likely to appear red at sunset than in the middle of the day as a result of the A) scattering of lower frequencies by larger particles in the air. B) longer path of air through which sunlight travels. C) lower frequencies of light emitted late in the day by the sun. D) pollutants emitted by humans in daylight hours. E) absorption effects of the smaller particles in the air.

B) longer path of air through which sunlight travels.

9) The colored dots that make up the color on a TV screen are A) red, blue, yellow. B) red, blue, green. C) yellow, blue, green. D) magenta, cyan, yellow. E) red, green, yellow.

B) red, blue, green.

23) The sky is blue because air molecules in the sky act as tiny A) mirrors which reflect only blue light. B) resonators which scatter blue light. C) sources of white light. D) prisms. E) none of these

B) resonators which scatter blue light.

21) Which interacts more with sounds of relatively high frequencies? A) large bells B) small bells C) both the same

B) small bells

22) Which interacts more with light of relatively high frequencies? A) large particles B) small particles C) both the same

B) small particles

15) Colors seen on the cover of our physics book result from color A) addition. B) subtraction. C) either of these D) neither of these

B) subtraction.

24) 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.

C) a mixture of particle sizes.

6) The solar radiation curve is A) a dent in the otherwise spherical sun. B) the path taken by the sun as it travels around the Earth. C) a plot of brightness of sunlight versus its frequency. D) a plot of the colors of sunlight versus their frequencies. E) a plot of light intensity versus distance from the sun.

C) a plot of brightness of sunlight versus its frequency.

29) A variety of sunset colors is evidence for a variety of A) elements in the sun. B) apparent atmospheric thicknesses. C) atmospheric particles. D) atmospheric temperatures. E) primary colors.

C) atmospheric particles.

4) What color light is transmitted by a piece of blue glass? A) red B) white C) blue D) yellow E) orange

C) blue

36) 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.

C) green.

26) The sky is the deepest blue A) just before a rainstorm. B) during a rainstorm. C) just after a rainstorm. D) when the air is humid. E) just before sunset.

C) just after a rainstorm.

39) Distant snow covered hills appear yellowish because that is the color of the A) atmosphere between the observer and the hills. B) selectively reflected light that reaches a distant observer. C) reflected light that survives scattering. D) sky that is reflected off the hills.

C) reflected light that survives scattering.

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

C) reflected.

16) 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

C) three plus black

35) A blue object will appear black when illuminated with A) blue light. B) cyan light. C) yellow light. D) magenta light. E) none of these

C) yellow light.

5) The brightest color emitted by the sun is A) red. B) orange. C) yellow-green. D) green-blue. E) violet.

C) yellow-green.

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

C) yellow.

31) 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.

D) absorption of red light.

40) 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 these

D) blue.

34) A sheet of red paper will look black when illuminated with A) red light. B) yellow light. C) magenta light. D) cyan light. E) none of these

D) cyan light.

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

D) frequencies.

20) Look at a full-color picture in a magazine with a magnifying glass and you'll see that the inks used 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 these

D) magenta, cyan, yellow, and black.

42) The atmosphere of Jupiter is more than 1000 km thick. From the planet's surface, the noon-day sun would appear A) white. B) faintly white. C) not at all. D) none of these

D) none of these

11) Complementary colors are two colors that A) look good together. B) are additive primary colors. C) are subtractive primary colors. D) produce white light when added together. E) are right for each other.

D) produce white light when added together.

43) On a planet where atmospheric gases are red, distant dark colored hills would look A) bluish. B) greenish. C) yellowish. D) reddish. E) untinted.

D) reddish.

27) Red sunsets are due to lower frequencies of light that A) are scattered from larger particles in the air. B) are refracted from larger particles in the air. C) are reflected by clouds and relatively large particles in the air. D) survive being scattered in the air. E) appear reddish orange to the eye.

D) survive being scattered in the air.

18) A mixture of red and green pigments appears A) orange. B) yellow. C) magenta. D) blue. E) blackish brown.

E) blackish brown.

33) A red crab very deep in water, where sunlight is dim, appears A) red. B) orange. C) cyan. D) brown. E) no color - black.

E) no color - black.