Plate Tectonics Vocab Crossword

2. Earth's outermost layer
3. current a current caused by the rising of heated fluid and sinking of cooled fluid
4. Ridge divergent boundary in the middle of the Atlantic Ocean
5. plate boundary forms where two plates slide past each other
7. the shaking that results from the movement of rock beneath Earth's surface
9. crust a solid, thin outermost layer of Earth
12. the layer of hot, solid material between Earth's crust and core
14. spreading the process that creates new sea floor as plates move away from each other at the mid-ocean ridges
17. plate boundary where two plates are moving apart, magma comes up to create new crust
18. spot a volcanically active area of Earth's surface far from a tectonic plate boundary
19. the supercontinent containing all of Earth's land that existed about 225 million years ago
22. plate boundary an area where plates move toward one another and collide
23. crust thinner, more dense, younger crust making ocean floor
24. core a dense sphere of solid iron and nickel at the center of Earth

1. one plate going under another plate
2. drift the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
6. plates large movable plates under the Earth's surface.
8. the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle
10. core a layer of molten iron and nickel that surrounds the inner core of Earth
11. a weak spot in the crust where magma has come to the surface
13. a crack in the earth's crust
15. valley a valley formed by the separation of tectonic plates
16. extremely deep areas in the ocean that are created by a subducting plate
20. the soft layer of the mantle on which the lithosphere floats
21. a landform with high elevation and high relief and formed by movement of the tectonic plates in the Earth's crust