Across
- 6. Originator of Continental Drift theory
- 7. a long cut in the ground : ditch
- 9. the rigid outer part of the earth, consisting of the crust and upper mantle
- 10. large slabs of rock that divide Earth's crust
- 11. occurs when two tectonic plates move away from each other
- 12. an opening in the sea floor out of which heated mineral-rich water flows.
- 14. places where plates slide sideways past each other
- 15. the uppermost layer of the oceanic portion of the tectonic plates
Down
- 1. a tectonic plate that consists primarily of continental crust
- 2. a seafloor mountain system formed by plate tectonics
- 3. the continent we now know as North America was contiguous with Africa, South America, and Europe
- 4. an area on Earth where two or more lithospheric plates collide
- 5. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
- 8. the hypothesis that the Earth's continents have moved closer together over time
- 13. a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other