Solar System Review Crossword

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Across
  1. 2. To spin on an axis
  2. 5. This gas giant is famous for its ring
  3. 6. The hottest planet in the solar system, with an atmosphere of 99% CO2
  4. 7. The __________ belt separates the rocky, inner planets from the gas giants
  5. 10. To travel in a circle around a central object
  6. 11. The force that keeps the planets trapped by the sun
  7. 12. The smallest planet, and closest to the sun
  8. 13. Only planet in the solar system with known life
Down
  1. 1. The planet furthest from the sun
  2. 3. Known as the "Red Planet" for its iron-rich soil
  3. 4. The largest planet in our solar system
  4. 8. Our sun and the planets that orbit it (one word, no space)
  5. 9. It takes Earth 365 days to ______ the sun
  6. 12. Earth has only one, but Mars has two and Jupiter has 79!