Chapter 8 Crossword

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Across
  1. 6. Heavy rains fell for this many years
  2. 8. Includes all countries south of panama
  3. 10. Smallest major land mass
  4. 12. The last stage of evolution of a star before a super nova
  5. 18. The accretion period lasted this many million years
  6. 21. What makes a star shine
  7. 23. General shape of the Earth
  8. 24. 10% of the earth is covered with this
  9. 25. A collapsing star
  10. 26. Protects us from UV rays
  11. 27. This formed around 4.6 billion years ago
  12. 30. Second largest ocean
  13. 31. The reason water is liquid on Earth
  14. 32. The primary reference line for latitude
  15. 34. Largest ocean
  16. 35. The universe’s beginning
  17. 36. Our galaxy
  18. 38. Everything is made up of this
  19. 39. Provides tides in the ocean
Down
  1. 1. The Elements most abundant after the Big Bang
  2. 2. Iron sinking to the middle of a planet and lighter minerals migrate to the surface forming the crust
  3. 3. Another name for latitude
  4. 4. How stars and planets were formed
  5. 5. The primary reference line for longitude
  6. 7. The early atmosphere contained ammonia, carbon dioxide, water vapor, other gasses, and also this
  7. 9. The first type of organism on Earth
  8. 11. The origin of life on earth came from here
  9. 13. Continent of the south pole
  10. 14. The Big Bang is thought to have occurred this many years ago
  11. 15. the color that penetrates ocean water the deepest
  12. 16. Stars are massive spheres of this
  13. 17. Includes the United States, Mexico,& Canada
  14. 19. A super nova exploding
  15. 20. Something that continues to this day
  16. 22. Bordered by the Atlantic Ocean to the west, the Indian Ocean to the east, and the Mediterranean sea to the North
  17. 28. Single continuous land mass that includes Europe and Asia
  18. 29. This made heavy rains fall
  19. 33. The event that caused it to rain on Earth
  20. 37. The political boundary that separates North and South America