Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What is one advantage of reflecting telescopes?
a. | They use smaller mirrors. | c. | They touch up
images. | b. | They focus perfect images. | d. | They have two focal points. |
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2.
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Which of the following types of electromagnetic radiation is blocked by the
Earth’s atmosphere?
a. | X rays | c. | infrared light | b. | microwaves | d. | visible light |
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3.
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Why do astronomers put telescopes in space?
a. | to reduce air pollution | b. | to get closer to objects in
space | c. | to avoid interference from the Earth’s atmosphere | d. | to avoid noise
pollution |
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4.
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What does a telescope collect from space and focus for closer
observation?
a. | magnetic particles | c. | lenses | b. | electromagnetic radiation | d. | wavelengths |
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5.
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How did Hubble tell the universe was expanding?
a. | Galaxies were moving away from each other. | b. | Galaxies were moving
toward each other. | c. | Galaxies were getting
bigger. | d. | The number of galaxies was increasing. |
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6.
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Which of the following indicates the universe is expanding?
a. | a growing celestial sphere | b. | an increase in the number of constellations in
the sky | c. | the discovery of other galaxies | d. | observations of
redshift |
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7.
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What is an advantage of a reflecting telescope?
a. | It can gather more light. | c. | It can detect distant
objects. | b. | It can focus images perfectly. | d. | It can use very small
lenses. |
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8.
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What makes up the electromagnetic spectrum?
a. | all colors of visible light | b. | all colors of invisible
light | c. | all of the wavelengths of electromagnetic radiation | d. | microwaves, gamma
rays, and X rays |
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9.
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What is an imaginary point directly above an observer’s head?
a. | celestial sphere | c. | right ascension | b. | zenith | d. | altitude |
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10.
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Which of the following is NOT a type of electromagnetic radiation found on the
electromagnetic spectrum?
a. | microwave | c. | radio wave | b. | visible light | d. | ocean wave |
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11.
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What does the Earth’s atmosphere do to most types of electromagnetic
radiation?
a. | blocks them | c. | stretches them | b. | absorbs them | d. | freezes them |
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12.
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How does the Earth’s atmosphere affect starlight?
a. | It blocks it. | c. | It causes it to shimmer and blur. | b. | It stretches
it. | d. | It causes it to change
colors. |
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13.
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An advantage of reflecting telescopes over refracting telescopes is that
a. | flaws in the glass do not affect the incoming light. | b. | mirrors only reflect
certain colors of light for better focus. | c. | mirror sizes are all the same for ease of
use. | d. | they use lenses to focus light. |
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14.
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Which of these would be shorter if Earth rotated faster?
a. | years | c. | weeks | b. | months | d. | days |
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15.
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Circumpolar stars can be seen all night long during the entire year because they
are
a. | the brightest stars. | c. | magnetically polar. | b. | above the Earth’s
axes. | d. | circular in
appearance. |
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16.
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An X-ray telescope is NOT used on Earth because X rays are
a. | blocked by the Earth’s atmosphere. | b. | destroyed by the
Earth’s magnetic field. | c. | very dangerous to humans. | d. | distorted by the
Earth’s winds. |
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17.
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What did redshift tell Hubble about the universe?
a. | The universe is getting smaller. | c. | The universe is getting
colder. | b. | The universe is getting larger. | d. | The universe is getting
redder. |
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18.
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How long does Earth take to orbit once around the sun?
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19.
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How long does Earth take to rotate once on its axis?
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20.
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About how long does the moon take to orbit the Earth?
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Completion
Complete each
statement.
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21.
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A phenomenon in which sound seems to increase or decrease in relation to the
direction it is moving is the ____________________.
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22.
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Many astronomers prefer to use a ____________________, as flaws in the glass do
not affect the light gathered.
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Use the terms from the following list to complete the sentences
below.
| altitude | declination | | ecliptic | constellation | | month | reflecting
telescope | | right ascension | year | | zenith | horizon | | constellation | celestial
sphere | | refracting telescope | Doppler effect | | |
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23.
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An instrument that uses a mirror to gather and focus light is a(n)
____________________.
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24.
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The apparent path of the sun across the celestial sphere as seen from Earth is
called the ____________________.
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25.
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An imaginary sphere that surrounds the Earth is the ____________________.
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Matching
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Match each item with the correct statement below. a. | refracting telescope | e. | year | b. | horizon | f. | altitude | c. | constellation | g. | month | d. | day |
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26.
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roughly the time required for the moon to orbit once around the Earth.
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27.
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an instrument that uses a set of lenses to focus light.
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28.
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the time required for the earth to rotate on its axis.
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29.
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the line where the sky and the Earth appear to meet
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30.
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the time required for the Earth to orbit once around the Sun.
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