Plate Tectonics Crossword

5. Rising and falling of a fluid caused by temperature or density differences within the material.
7. The sudden and violent shaking of the ground, sometimes causing great destruction.
9. An elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma (no hyphen in spelling).
10. A lowland region that forms where Earth's continental crust is pulled apart at divergent boundaries.
13. Massive, irregularly shaped slabs of solid rock made up of both continental and oceanic lithosphere.
15. Any process that happens on earth, such as weathering, erosion or plate tectonics.
16. A place where the earth's plates move horizontally past each other.

1. The rigid outer area of the earth, consisting of the crust and upper mantle.
2. The upper layer of the earth's mantle, below the lithosphere, in which convection currents occur.
3. The theory that the outer layer of earth, the lithosphere, is divided into plates that move around on the asthenosphere.
4. The expulsion of magma and gas from the Earth's interior.
6. The underwater part of earth’s crust formed by divergent plate boundaries.
8. A place where the earth’s plates come together.
11. A break or crack in the earth’s lithosphere along which rocks move.
12. A place where the earth’s plates separate.
14. A long narrow steep-sided indent in the earth's oceanic crust.