Chapter 7 and 8

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Across
  1. 2. Star’s core will eventually collapse in an explosion
  2. 3. What is still expanding
  3. 4. deepest points on Earth
  4. 7. Name given to Earth when the outer surface was completely molten
  5. 8. Ancient supercontinent
  6. 13. Scientist (1953) known for his experiment finding the building blocks of life
  7. 16. Continent of the South Pole
  8. 18. 0 degrees longitude
  9. 19. Ocean with a trade route between Africa and Asia
  10. 22. Percentage of land covered in ice
  11. 24. Continent bordered to the North by the Mediterranean Sea
  12. 25. Clumping smaller particles into larger masses
  13. 26. Why do stars twinkle
  14. 28. South of the Equator
  15. 30. Ocean connecting the polar waters
  16. 32. Percentage of oceans covered in ice
Down
  1. 1. Parallels of
  2. 5. Distorts the continents as little as possible
  3. 6. Massive spheres of incandescent gas
  4. 9. 0 degrees latitude
  5. 10. Color penetrating ocean water the deepest
  6. 11. How stars and planets were formed
  7. 12. Place of the primary reference line of longitude
  8. 14. Most maps used in classrooms
  9. 15. Release of volatile substances and water vapor
  10. 17. Smallest ocean
  11. 20. North of the Equator
  12. 21. Continent including Canada, Greenland, US, Mexico, and Central America
  13. 23. Meridians of
  14. 27. Smallest continent
  15. 29. 1 nautical mile per hour
  16. 31. Cloud of cold dust and gas within a galaxy