Across
- 2. deposits of this mineral suggests that Antarctica once had warmer climates
- 5. the number of decades AFTER Wegener's death that his theory was accepted
- 6. pangaea is divided into Laurasia and this land mass
- 7. deep, underwater trough along a plate boundary
- 8. female scientist that created the first complete map of the ocean floor
- 12. ridge that separates the Atlantic Ocean
- 14. important fossil discover because this animal could not swim, but was found on two distant continents
- 19. less dense plate found under land
- 21. map maker
- 24. technology that uses pulses of sound waves to measure ocean depths
- 25. a rupture and sudden movement of rocks along an active plate boundary
- 27. evidence that land was connected; living remains turned to rock
- 28. (two words) continuous process of creating new oceanic crust along a ridge while destroying it along the trench
- 29. plant fossil used by Wegener to support his Theory of Plate Tectonics
Down
- 1. two words) theory that stated the continents drifted away from each other over millions of years
- 3. plate boundary where two plates are moving away from each other
- 4. type of map that color codes rocks based on age
- 9. Name Wegener's theorized supercontinent
- 10. hypothesized the theory of continental drift
- 11. a break in the earth's crust along which movement occurs
- 12. "fluid" rock under the earth's surface
- 13. (two words) circular depressions caused by meteors
- 15. (two words)evidence that continents were once connected; rock strata
- 16. more dense type of plate
- 17. plate boundary where two plate are pushing towards each other
- 18. name for molten rock once its outside the Earth's crust
- 20. digital image of underwater land and water depth
- 22. plate boundary where two plates are sliding horizontally past each other
- 23. scientist that studies rocks, materials, and processes of the Earth's history
- 24. occurs when an oceanic and a continental plate converge
- 26. mountain formed when two continental plates converge