Plate Tectonics
Across
- 2. The process by which old crust re-melts into the mantle.
- 9. The law of cross cutting relationships says that __________ are younger than the layers they cut through.
- 10. Motion of the Earth's crust occurs here.
- 12. The mid-Atlantic _________.
- 13. Occurs when two continental plates coll.ide.
- 15. Layer of Earth made of melted rock.
- 18. This rock forms when igneous rock is subjected to high temperature and pressure.
- 23. Type of rock associated with the sea floor.
- 24. Area below the lithosphere.
- 25. This rock forms from the cementation of sand or organic particles.
Down
- 1. This process occurring in the mantle drives plate tectonics.
- 3. Earth's crust is broken into _________.
- 4. New crust is created at this boundary.
- 5. This process breaks down big rocks into sediment.
- 6. Occurs when pressure in the Earth's crust brings magma to the surface.
- 7. The law of superposition tells us that ________ rocks are always underneath younger rocks.
- 8. Earth's crust is this state of matter.
- 11. A geologic feature that results from subduction.
- 14. These mountains were formed by the collision between the Indian and Eurasian plates.
- 16. Plates move ________ from each other at a divergent boundary.
- 17. The pacific plate is made of this type of crust.
- 19. These mountains were created when continental and oceanic crust converged.
- 20. The upper portion of the mantle is called the _______ mantle.
- 21. Earthquakes occur along __________ boundaries.
- 22. This rock forms from cooled magma.