plate tectonics

4. a major fault separating blocks of the earth's surface; a rift valley.
6. a large natural elevation of the earth's surface rising abruptly from the surrounding level; a large steep hill.
8. any of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America).
9. a very large expanse of sea, in particular each of the main areas into which the sea is divided geographically.
10. the person that came up with the theory of pangea
11. 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.
13. the outermost layer of rock of which a planet consists, especially the part of the earth above the mantle.
14. make a thorough or dramatic change in the form, appearance, or character of.
16. a location where airflows or ocean currents meet, characteristically marked by upwelling (of air) or downwelling (of water).
18. a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles.
19. an extended break in a body of rock, marked by the relative displacement and discontinuity of strata on either side of a particular surface.

1. a super continent that consisted of all the connected continents today
2. the rigid outer part of the earth, consisting of the crust and upper mantle.
3. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
5. cause to undergo bending or curvature.
7. tending to be different or develop in different directions.
12. a long, narrow, deep depression in the ocean floor, typically one running parallel to a plate boundary and marking a subduction zone.
13. the dense central region of a planet, especially the nickel–iron inner part of the earth.
15. the region of the earth's interior between the crust and the core, believed to consist of hot, dense silicate rocks
17. when an oceanic plate runs into a continental plate and slides beneath it.