Plate Motion

4. a point at which rays of light or heat meet after being refracted or reflected.
9. A sudden motion or trembling in the earth caused by the abrupt release of slowly accumulated energy.
10. Two plates sliding past each other
12. line graphs that show a sideways view of a landscape.
13. Any of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America).
15. plate gigantic pieces of the Earth's crust and uppermost mantle.
16. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
17. the imprint left by the shell on the rock that surrounded it.
20. an instrument that measures and records details of earthquakes
22. a layer inside a planetary body bounded below by a core and above by a crust.
23. the quality of being intense

1. occurs when two tectonic plates move away from each other.
2. drift. the gradual movement of the continents across the earth's surface through geological time.
3. a fracture or zone of fractures between two blocks of rock.
5. an external coating or covering.
6. the maximum extent of size and the direction of an object.
7. (of organic matter) changed into a stony substance.
8. waves caused by the sudden movement of materials within the Earth, such as slip along a fault during an earthquake.
11. The point where two or more plates meet
13. an object made by shaping molten metal or similar material in a mold.
14. A supercontinent that incorporated almost all the landmasses on Earth.
18. the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
19. the point on the earth's surface vertically above the focus of an earthquake
21. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.