Planet Facts

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Across
  1. 2. The second largest planet in our solar system.
  2. 8. Mercury has no ____________.
  3. 10. Mars' atmosphere is made mostly of carbon _______.
  4. 11. Saturn has high levels of _____________.
  5. 12. Mercury has a very low surface ____________.
  6. 13. Mars has very _________ gravity.
  7. 15. Neptune suffers the most ___________ weather.
  8. 16. __________ Mons, the largest volcano in the solar system.
  9. 18. Saturn's rings are made up of millions of ice __________.
Down
  1. 1. Neptune has a hydrogen-__________ atmosphere.
  2. 3. Mars' canyons may have been caused by water ________.
  3. 4. The red planet.
  4. 5. Neptune is the ____________ planet.
  5. 6. Saturn is not a ______________ planet.
  6. 7. A water planet.
  7. 9. Planet with a surface similar to our moon.
  8. 10. Mars experiences violent _________ storms.
  9. 13. Mercury has no ___________ on the surface.
  10. 14. Saturn is surrounded by a system of __________.
  11. 17. Saturn has many __________.