Earth and Mars

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Across
  1. 2. On top of the inner core sits the ___________
  2. 4. Earth is the only planet that we know of that can sustain ________
  3. 7. Mars has the largest ________ in the solar system
  4. 9. The word "Earth" comes from the germanic word for ________
  5. 10. The outermost layer of Earth is called the ________
  6. 12. Earth is the largest of the __________ planets
  7. 14. Earth is the only planet that has _________ on its surface
  8. 15. Earth's crust moves about the same rate as your __________ grow
Down
  1. 1. Mars is about _____ the size of Earth
  2. 3. Colorful light displays caused by solar wind reacting with Earth's magnetic field
  3. 5. The layer of Earth in the very center is called the ________ core
  4. 6. Earth has a _________ field that protects us from solar radiation
  5. 8. Outside of the inner core is the __________ core
  6. 11. Martian days are called _________
  7. 13. Mars is covered in ______ giving it a red appearance
  8. 14. Mars is named after the Roman god of _____
  9. 16. Earth is the only planet not named after __________