Plate Tectonics
Across
- 5. Devise that helped map the ocean floor
- 6. ___________ tectonics is the theory that the Earth's surface is cracked into large pieces.
- 8. When 2 plates collide and 1 plate sinks into the mantle, under the other plate.
- 9. When tectonic plates slip past each other.
- 10. Geological event that occurs when 2 plates move past each other ad releases energy.
- 12. The border between 2 plates
- 13. The movement of the tectonic plates, made by heat and pressure.
- 16. Name for when all the continents were once joined together millions of years ago.
- 17. Valley a low region that forms where plates move apart
Down
- 1. Last name of the man who first came up with the idea of plate tectonics.
- 2. The rigid outer part of the Earth (includes the crust and upper mantle)
- 3. When 2 continental plates collide they create ____________.
- 4. Where convection currents occur
- 7. When 2 tectonic plates move away from each other
- 11. What the plates are made out of
- 14. When tectonic plates move toward each other and collide.
- 15. Melted rock inside the Earth
- 18. A fracture or zone of fractures between 2 blocks of rock.