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Lesson 2 Test Review

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    Gravity, Planets, Moons and Space Objects
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  • Which planet may have frozen water beneath its polar surface, and might support life?
    Mars
  •  25
  • Name the four inner planets, from the sun outward:
    Mercury, Venus, Earth, Mars
  •  20
  • Name the four outer planets, from the sun outward:
    Jupiter, Saturn, Uranus, Neptune
  •  25
  • Is it true that dwarf planets share their orbital path with other celestial objects?
    yes
  •  15
  • Why does a comet have a tail?
    The frozen surface vaporizes into a gas.
  •  25
  • What is evidence on the surface of a planet that it has been hit by meteors?
    craters
  •  20
  • What is unusual about a comet's orbit around the sun?
    It's extremely long and can take over 200 years (and it's elliptical)
  •  25
  • Why do we see meteors in the night sky?
    We see them burning up in our atmosphere.
  •  25
  • Why is the Kuiper Belt so cold?
    It's so far away from the sun.
  •  20
  • Between which two planets is the Asteroid Belt?
    Mars and Jupiter
  •  25
  • When a smaller space object is "captured" by a planet, and it then orbits the planet, it becomes the planet's ____
    moon.
  •  20
  • True or False: The moon is thought to be much younger than the earth.
    False...they are about the same age.
  •  20
  • True or False: Pluto is the largest Dwarf planet.
    False...(Eris is slightly larger)
  •  20
  • True or False: Pluto is larger than the earth's moon.
    False, it's smaller than our moon.
  •  20