Plate Motion

6. the place where two plates meet
7. an underwater mountain range formed when two plates move apart
8. hot liquid rock on the surface of Earth
9. the layer of soft, solid rock underneath Earth's plates
11. a long, deep indentation in the ocean floor formed when two plates move together
13. one of the very large sections of hard, solid rock that make up Earth's outer layer
16. the rising and sinking of hot material; the reason Earth's plates are able to move
17. a landform that releases gas, lava, and ash out onto the surface of Earth
18. a landform that is created when two continental plates move toward each other
19. global positioning system

1. the scientist who claimed the continents were all once one large landmass and he called it "Pangaea"
2. a landform that is created when two continental plates move away from each other
3. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
4. hot liquid rock below the surface of Earth
5. when two plates move away from each other
10. when two plates slide past each other
12. a sudden shaking of Earth's surface
14. an extinct reptile that lived about 300 million years ago
15. when two plates move toward each other