Chapter 7 & 8 crossword

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Across
  1. 4. Continuous land mass that contains Europe and Asia
  2. 7. when did earth form
  3. 9. imaginary line running through the earth
  4. 13. percent of land covered in ice
  5. 14. smaller than the ocean
  6. 15. measure of speed
  7. 16. why earth is suitable for humans
  8. 17. continent of the south pole
  9. 20. smallest continent
  10. 22. percent of earth covered in ice
  11. 24. first organisms on earth
  12. 25. why do stars twinkle
  13. 27. smallest ocean
  14. 28. includes all countries south of panama
  15. 29. second largest
  16. 30. largest ocean
Down
  1. 1. warmest ocean
  2. 2. accurate representation of the features on earth
  3. 3. northern and southern
  4. 5. percent of ocean covered in ice
  5. 6. distorts continents by not slicing into them
  6. 8. UN established major boundaries
  7. 10. exploding of stars
  8. 11. earth belongs to what galaxy
  9. 12. shrinks under its own weak gravity
  10. 18. body of a star that swells into a
  11. 19. practice of drawing maps
  12. 21. how long did it have to rain to make oceans
  13. 23. includes US,Mexico,and Canada
  14. 26. similar to wedges by dividing the area into equal sections