plate tectonics

2. motion resulting when sudden movement of plates releases large amounts of energy
3. molten rock beneath Earth's surface; called lava when it reaches the surface
5. plate consisting mostly of dry land
9. plate under the ocean floor
11. the process of one plate moving under another plate
14. very deep place on the ocean floor caused by subduction
15. type of boundary where plates move together

1. the movement of new oceanic crust away from a divergent boundary toward a convergent boundary, where it is subducted and recycled.
3. the layer of Earth where convection currents occur
4. giant plates on Earth's crust
6. type of boundary where plates slide horizontally past each other
7. eruption of magma from below Earth's surface
8. the edge of a tectonic plate
10. large wave caused by undersea earthquakes
12. the force that causes tectonic plates to move
13. type of boundary where plates move apart