Chapter 7 & 8 crossword

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Across
  1. 4. covered by 4.4% of ice
  2. 5. twinkle because of liberate energy
  3. 8. the type of boundary the UN established
  4. 11. another name for the Arctic sea
  5. 12. in a supernova what collapses in a star
  6. 14. covered by 5.5% of ice
  7. 15. measured in degrees from 0 to 90
  8. 16. because the temperature dropped it caused it to
  9. 18. the theory of how stars and planets were formed
  10. 19. release of volatile substances and water vapor
  11. 21. dividing the area into equal sections
  12. 23. a person who draws and produces maps
  13. 24. the earth is shaped like an ____
  14. 26. sinks down in density stratification
  15. 29. have become extremely accurate due to technology
  16. 31. in size Australia is the
  17. 32. 1.85 km equals ___ nautical mile(s)
  18. 33. means half
  19. 35. meridians of longitude pass through the
  20. 36. 10% of earth is covered in
  21. 37. it rained 10 million years to create what
  22. 38. established boundaries in 1955
  23. 39. the milky way is the earth’s
  24. 40. North America includes Central America,mexico,and…
Down
  1. 1. Africa bordered by the atlantic ocean to the
  2. 2. the earth is tilted on a _____ of 23.5
  3. 3. parallels of latitude form complete circles around the globe, what to the equator
  4. 6. the major shipping ocean
  5. 7. the color that can penetrate the ocean water the deepest
  6. 9. is an imaginary line running mostly along the 180 degree meridian
  7. 10. homolosine distorts this as little as possible
  8. 13. very large star with high luminosity and low surface temperature
  9. 17. cloud of cold dust and gas within a galaxy
  10. 20. the ocean that covers ⅓ of the earth
  11. 22. lasted 100,000 years
  12. 23. the navigation when you use the sun, moon and stars to find your way
  13. 25. most accurate representation of the features of the earth
  14. 27. the earth was formed 4.54 ____ years ago
  15. 28. marine and air navigators use _____ to measure distance
  16. 30. measured in degrees from 0 to 180
  17. 34. the ocean that is the warmest