The Terrestrial Planets

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Across
  1. 3. Earth’s atmosphere is mostly made of oxygen, carbon dioxide, and ____________.
  2. 5. The sulfuric ____ that rains from Venus is really toxic.
  3. 6. Mercury is the ______ planet to the Sun.
  4. 10. Mars’ atmosphere is made of mostly what gas?
  5. 13. Earth’s surface is made up of _________ which move on Earth’s crust.
  6. 14. What liquid did Venus used to have on its surface?
  7. 16. Venus takes approximately 225 days to _____ around the Sun.
Down
  1. 1. Mars is red because it is made of what material?
  2. 2. Mercury takes approximately fifty-eight days to ______.
  3. 4. The Earth takes approximately ____ days to revolve around the Sun.
  4. 7. True or False- Mercury has little to no atmosphere.
  5. 8. The ______ on Venus can reach 465 degrees Fahrenheit.
  6. 9. Olympus Mons is the largest _______ on Mars.
  7. 11. Earth has _____ moon(s).
  8. 12. Mars has the most similar rotation time to which other terrestrial planet in the solar system?
  9. 15. True or False- Mercury is covered in craters.