1.  At what time of day can Mercury be viewed by people on Earth?
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2.  What caused the many craters on the surface of venus?
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3.  What causes the seasons to change on earth?
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4.  What is the planet Mars' nickname?__________________________

5.  How many of the planets in the solar system will fit inside the planet Jupiter?  _______________________________________________

6.  The rings around Saturn are made of ________ and __________.

7.  True or False:  Uranus rotates on its side.  ____________

8.  Astronomers think the big, dark circles on Neptune's surface are ________________________________________.

9.  What planet do some scientists think might actually be a moon in Neptune's atmosphere.

10.  What star is closest to planet Earth?  _______________________
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