Plate Tectonics

2. Type of plate boundary whereplates move towards one another
3. Process that occurs when one tectonic plate descends under another tectonic plate
7. Type of crust that is thin, dense, and made up of basalt rock
9. name of supercontinent that existed about 250 million years ago
10. Type of plate where plates move away from one another
11. last name of scientist who first proposed continental drift theory
12. Type of plate boundary where plates horizontally slide and grind past one another
15. A continental volcanic _____ is a range of volcanic mountains produced by the subduction of an oceanic plate under a continental plate

1. The cycle of rising and falling of molten rock in the mantle
4. a long deep valley along the edges of some ocean basins
5. when to plates converge they,they can create a _____ island arc
6. geologic formation made by two continental plates at a convergent boundary
8. A type of crust that is thick, less dense, and made up of granite rock
13. Geologic formation caused by two diverging continental plates
14. Geologic feature located at a divergent plate boundry between two oceanic plates