Plate Tectonics

5. the rigid outer part of the earth, consisting of the crust and upper mantle
6. seafloor spreading underwater mountain chain
7. Plate Boundary when two tectonic plates move away from each other
8. A plate boundary that exhibits lateral motion
9. a supercontinent that existed during the late Paleozoic and early Mesozoic eras
10. hot material moving upward from the Earth's mantle into the crust
11. Plate Boundary lithospheric plates collide
12. relating to the structure of the earth's crust and the large-scale processes which take place within it
13. a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics
14. long chains of active volcanoes with intense seismic activity
16. the gradual movement of the continents across the earth's surface through geological time
18. an area on Earth over a mantle plume
20. the highly viscous, mechanically weak, and ductile region of the upper mantle of Earth

1. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
2. A supercontinent of the Southern Hemisphere
3. Magnetic minerals in rocks can lock-in a record of the direction and intensity of the magnetic field when they form
4. large slabs of Earth's lithosphere—split apart from each other
5. A supercontinent of the Northern Hemisphere
10. a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements
15. its fluid dynamics!, density differences exist within the molten Earth causing movement between the inner and outer core
17. long narrow chasms - the deepest parts of the ocean
19. a fracture or zone of fractures between two blocks of rock