All About Earth Science

1234567891011121314151617181920
Across
  1. 2. nearly 90% of Earth ozone
  2. 6. amount of water vapor in air
  3. 7. solar wind and Earth's magnetic field
  4. 9. makes air impure
  5. 10. less than 220 dobson units
  6. 14. harmful to breathe
  7. 15. N2O
  8. 17. contains all water
  9. 18. rocky outer layer of Earth
  10. 19. view and map Earth
  11. 20. outermost layer of atmosphere
Down
  1. 1. representation of Earth's processes
  2. 3. invisible gas
  3. 4. second lowest layer
  4. 5. prolonged dry period
  5. 8. meteors burn up
  6. 11. other term for biosphere
  7. 12. can be studied separately
  8. 13. a closed system
  9. 16. high temperature