Short Answer
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1.
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What does the Universe include?
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2.
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What is the Big Bang?
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3.
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How long ago did the Universe form?
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4.
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Explain why the galaxies are moving outward.
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5.
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If you had a spaceship that could move at the speed of light, could you visit
another galaxy? Explain!
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6.
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What is astronomy?
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7.
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Which six planets did the ancients know about? Why did they not know about
the other three planets?
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8.
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Why was astronomy important to the ancients?
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9.
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What did the ancients use when studying the sky?
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10.
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Who was the first astronomer to use a telescope?
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11.
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Why did sailors use the stars and not the planets to find their way at
sea?
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12.
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Why did the Greeks call some stars planetes?
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13.
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Galileo, Kepler, and Copernicus believed in which model of the solar
system?
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14.
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Explain the difference between the heliocentric and geocentric models of the
solar system.
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15.
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Explain how our ideas about the solar system have changed over the last 2,000
years.
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16.
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Who came up with the Scientific Method and what is it?
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17.
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Aristotle and Ptolemy believed what about the solar system?
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18.
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Why did it take so long for people to accept the heliocentric model of the solar
system instead of the geocentric model?
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19.
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How has technology helped change our ideas about the Universe?
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20.
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What is the name of the telescope that orbits the Earth?
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21.
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Galaxies are made up of what?
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22.
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Astronomers classify galaxies on the basis of what?
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23.
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Why do we use scale models while studying astronomy?
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24.
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There are how many types of galaxies and what are their names?
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25.
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The oldest stars are found in what type of galaxy?
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26.
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Explain what a nebula is and why is it important?
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27.
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Describe the Milky Way Galaxy and tell where our solar system is located.
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28.
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Correctly identify each of these three galaxies. A. 
B.  C. 
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