Plate Tectonics
Across
- 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
Down
- 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