plate tectonic

3. the relatively thick part of the earth's crust that forms the large landmasses.
6. the relatively thin part of the earth's crust that underlies the ocean basins.
7. moving away from each other
9. sliding against each other
11. an intense shaking of the Earth's surface.
12. extremely hot liquid and semi-liquid rock located under the Earth's surface

1. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
2. an elevated portion of the Earth's crust, generally with steep sides that show significantly exposed bedrock.
4. the rigid outer part of the earth, consisting of the crust and upper mantle.
5. a line that marks the limited area of the plates
8. moving toward each other
10. plate tectonic boundaries where two plates converge and one plate is thrust beneath the other.