Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Which of the following is NOT an advantage of radio telescopes over optical
telescopes?
a. | Radio telescopes are less affected by atmospheric conditions. | b. | Radio telescopes are
less expensive. | c. | Radio telescopes can operate 24 hours a day. | d. | Radio telescopes
have better resolution. |
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2.
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The source of the sun’s energy is ____.
a. | chemical burning | c. | nuclear fusion | b. | nuclear fission | d. | photosynthesis |
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3.
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Which of the following is NOT a form of electromagnetic radiation?
a. | radio waves | c. | gamma rays | b. | gravity | d. | visible light |
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4.
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The layer of the sun that radiates most of the light that reaches Earth is the
____.
a. | photosphere | c. | chromosphere | b. | corona | d. | ionosphere |
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5.
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An apparent shift in the wavelength of light emitted by a light source moving
toward or away from an observer is known as
a. | spectrum analysis. | c. | the Doppler effect. | b. | parallax. | d. | a Cepheid
variable. |
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6.
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Which type of spectrum can be produced by a solid, liquid, or gas?
a. | emission spectrum | c. | discontinuous spectrum | b. | absorption
spectrum | d. | continuous
spectrum |
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7.
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Which property of an optical telescope is associated with sharper images?
a. | light-gathering power | c. | magnifying power | b. | resolving power | d. | chromatic
aberration |
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8.
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The sunspot cycle lasts an average of
a. | 2 years. | c. | 20 years. | b. | 11 years. | d. | 17 years. |
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9.
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Chromatic aberration ____.
a. | blocks stars from most telescopes | b. | weakens the images of stars | c. | makes stars appear
much larger than they are | d. | makes images of stars appear
sideways |
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10.
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In Figure 24-1, what feature is labeled A?
a. | corona | c. | chromosphere | b. | photosphere | d. | prominence |
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