Across
- 2. most of earth is covered in what
- 4. the amount of hours in a day on earth
- 10. earth´s atmosphere contains this percent of oxygen
- 11. earth has how many moons
- 12. earth has how many rings
- 14. this planet has two irregularly shaped moons
- 15. earth is the ----- planet from the sun
Down
- 1. earth´s atmosphere contains this percent of nitrogen
- 3. Mars is ---- the size of earth
- 5. If the sun was the size of a door earth would be a
- 6. What is Mars´s nickname
- 7. three times the size of Mount Everest
- 8. What makes Mars red
- 9. water covers what percent of the earth
- 13. this planet´s year consists of 365 days