Plate Tectonics

3. Currents, A heat driven cycle in fluids (hot rises, cold sinks)
6. name given to a supercontinent
7. Boundary, the boundary between two plates that slide past each other
8. Wegner, Scientist who believed that all the continents were joined together and drifted apart over time
10. Boundary, the edge where two tectonic plates meet. There earthquakes and volcanoes might happen.
11. Spreading, the process in which new ocean crust is made by the mid-ocean ridge and old ocean crust is pushed away
12. Tectonics, theory that the Earth's surface is broken into large pieces that move

1. Drift, the movement of Earth's continents over time
2. Boundary, the boundary between two plates that move away from each other
3. Boundary, the boundary between two plates that move toward each other
4. the process that occurs when one plate moves under another tectonic plate
5. vibrations caused by the rupture and sudden movement of rocks in the Earth's crust
9. Hess, Scientist who proposed the idea of seafloor spreading when he saw the ocean getting bigger