Plate Motion

4. gigantic pieces of the Earth's crust and uppermost mantle.
5. A sudden motion or trembling in the earth caused by the abrupt release of slowly accumulated energy.
6. the quality of being intense
9. Any of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America).
10. a layer inside a planetary body bounded below by a core and above by a crust. Fossil the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. Mold the imprint left by the shell on the rock that surrounded it. Cast an object made by shaping molten metal or similar material in a mold.
12. drift. the gradual movement of the continents across the earth's surface through geological time.
13. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
16. line graphs that show a sideways view of a landscape.
17. a fracture or zone of fractures between two blocks of rock.
18. a point at which rays of light or heat meet after being refracted or reflected.
19. A super continent that incorporated almost all the landmasses on Earth.
20. Two plates sliding past each other

1. (of organic matter) changed into a stony substance.
2. the point on the earth's surface vertically above the focus of an earthquake.
3. the maximum extent of size and the direction of an object.
7. an instrument that measures and records details of earthquakes.
8. The point where two or more plates meet. Divergent occurs when two tectonic plates move away from each other.
11. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
14. an external coating or covering.
15. waves caused by the sudden movement of materials within the Earth, such as slip along a fault during an earthquake.