History (Pt1) Early History

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Across
  1. 3. Proved all oceans were connected by being the first to circumvent the world
  2. 6. Country Christopher Columbus explored for
  3. 7. Another term for Earth's crust
  4. 11. This scientist proposed the continental drift theory
  5. 14. The Earth's _______ field has been changing much over the course of history
  6. 15. These people picked up sea exploration after the Dark Ages
  7. 16. First ocean drilling vessel for scientific research
  8. 17. The expedition in which they measured the depth of the sea by throwing a weight overboard attached to miles of rope
  9. 18. The ship Darwin was on
  10. 19. A group of Pacific Islanders that are knowledgeable about the marine life and navigation
Down
  1. 1. First accomplished Western navigators
  2. 2. The first ship specialized for oceanographic research
  3. 4. First marine biologist
  4. 5. Mid-ocean ridges were created by underwater ______
  5. 8. The person that created the Theory of Plate Tectonics
  6. 9. Ocean research declined from the early times until this time
  7. 10. Study of both contemporary cultures and their historical origins
  8. 12. Also known as the Challenger Deep
  9. 13. Combined the continental drift and seafloor spreading hypotheses to make the Theory of _______
  10. 20. Technology used to detect sound transmitted through water