Inner Planets Henry

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Across
  1. 3. ___ is the 3rd closest planet to the Sun
  2. 6. The biggest ___ in the solar system are located on Mars
  3. 9. The ___ in mercury are very different during day and night
  4. 12. Mercury is the __ mercury in the solar system because Mercury has the shortest year
  5. 14. Mercury is the ___ planet
  6. 15. Mars is nicknamed the “Red Planet” because Mars has ___ on its surface
Down
  1. 1. The closest planet to the Sun
  2. 2. The 2nd planet from the Sun
  3. 4. Venus is the ___ planet
  4. 5. Mars has the largest ___ in the solar system
  5. 7. Earth is the only planet that we know that has ___
  6. 8. Earth's surface is covered in around 70% ____
  7. 10. The 4th planet from the Sun
  8. 11. The inner planets are all mostly made up of ___
  9. 13. Venus is Earth’s ___ planet