Chapter 7 & 8 crossword

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Across
  1. 4. general shape of earth
  2. 5. primary reference line of latitude
  3. 6. lines of latitude are also called
  4. 8. north america includes mexico, canada and ?
  5. 9. allows people to navigate without estimated caculations
  6. 11. reference line around the earth connecting the poles
  7. 14. largest ocean on earth
  8. 15. cold water sinks and hot water rises
  9. 16. what caused it to rain
  10. 17. smallest ocean
  11. 19. imaginary line earth rotates on
  12. 20. 5.5% is covered
  13. 22. how long did accretion last
  14. 24. releasing gas and vapor
  15. 25. cloud of gas and dust
  16. 26. name of continent of the south pole
  17. 29. what galaxy is earth in
  18. 30. 4.5% is covered
Down
  1. 1. half a sphere
  2. 2. 2 types of boundaries
  3. 3. high light and low temp
  4. 7. a star exploding
  5. 10. political boundary that separates north and south america
  6. 12. how long did it rain for to fill the oceans
  7. 13. equaled to 2,025 yards
  8. 18. equals 1.15mph
  9. 21. Ocean that connects the polar waters
  10. 22. the year the UN established major boundaries
  11. 23. large body of water or saltwater
  12. 27. smallest land mass
  13. 28. color that penetrates the ocean waters the deepest