Tectonic Plates & Continental Drift

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Across
  1. 1. A mid ocean _____ forms when two oceanic plates pull away from each other.
  2. 3. Alfred Wegener first observed that South America and Africa seemed to fit together like _______ pieces.
  3. 7. A plate boundary where two plates move away from each other.
  4. 8. A geology professor who studied the ocean floor.
  5. 9. Where two or more tectonic plates meet.
  6. 10. ______ evidence was later found of similar animals on different continents.
  7. 11. The process by which one plate goes underneath another less dense plate.
  8. 12. A plate boundary where two plates collide.
  9. 15. At a mid ocean ridge ______ rises to the surface and then eventually forms new ocean crust or rock.
  10. 16. A super continent that existed 335 million years ago.
  11. 17. A break or fracture in Earth's crust that are typically found along transform boundaries.
Down
  1. 2. Volcanic _________ form when an oceanic and continental plate converge.
  2. 3. Rocks on the seafloor show that the magnetic ______ have changed overtime.
  3. 4. ______________ in the mantle of the Earth are the driving force for tectonic plate movement.
  4. 5. A plate boundary where plates slide past one another.
  5. 6. A meteorologist who proposed continental drift theory.
  6. 13. Wegener's theory was first _______ by other scientists until after Harry Hess's findings which supported Wegener's theory.
  7. 14. The type of rock that makes up the ocean floor and oceanic plates.