Earth and Mars

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Across
  1. 4. the reason Mars is so red
  2. 5. Third layer of Earth
  3. 7. Mars smaller moon
  4. 10. Mars has a _____ of 25.19
  5. 13. Outer layer of Earth
  6. 14. what rust is also known as
  7. 15. how many moons does Mars have
Down
  1. 1. the mostly-solid bulk of Earth's interior
  2. 2. Mars largest moon
  3. 3. What is mostly found on Earth
  4. 6. Mars is also known as
  5. 8. fourth planet from the sun
  6. 9. Mars is ___ the size of Earth
  7. 11. Hot dense ball layer of Earth
  8. 12. third planet from the sun