Plate Tectonics-Crick

3. Earth's continents were all once part of supercontinent called-
5. When 2 plates slide past each other
9. occurs when material deep in Earth’s mantle rises and melts, forming magma. This area does NOT move
10. occurs at ALL plate boundaries
11. are created by subduction
12. long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another
15. these are responsible for the movement of tectonic plates
17. a lowland region that forms where Earth's tectonic plates move apart, or rift
19. a vast area of Earth's surface below ocean water
20. form at hot spots and subduction zones, but erupt less often than other volcanoes.
21. traces of organisms found in rocks

1. When 2 plates move away from each other
2. 2 plates where molten material within the earth pushes its way up, causing the plates to move away from each other
4. a chain of mountians by a vast underwater volcanic range formed at divergent tectonic plate boundaries
6. forms when 2 continental plates come together.
7. When 2 plates move toward each other
8. the thin and more dense crust that will subduct
13. the thicker and less dense crust
14. a break in the earth's crust, occurs at a transform boundary
16. the law of superposition states that the__ is found under the youngest layer
18. happens when continental and oceanic plates meet