PLATE TECTONICS STUDY GUIDE

5. Boundary where plates move apart.
7. Consists of oceanic/continental crust and the uppermost mantle.
9. The reason why basalt is created at a Mid Ocean Ridge rather that granite.
13. Oceanic crust is subducted here and is recycled back into the asthenosphere.
14. Oceanic crust is make of this denser rock.
16. Created at an ocean-ocean convergent boundary. ex. Caribbean Islands.
18. A portion of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust.
19. Boundary where plates come together
21. Created at a continental-continental divergent boundary. example Africa.
22. Boundary where plates slip past each other.
23. Deep Ocean Trench
24. Where Earth's plates meet.
26. Theory that explains the movement of Earth's plates.

1. Cracks in Earth's crust that occur at transform boundaries due to earthquakes.
2. Continental crust is made of this lighter rock.
3. Breaks in Earth's crust at plate boundaries.
4. The process by which molten material produced at the Mid Ocean Ridge creates new oceanic crust.
6. New oceanic crust is created here.
8. Example of a continental-continental convergent boundary.
10. A geologic feature in the middle of the Atlantic Ocean where new oceanic crust is produced.
11. Occur as mirror images on both sides of the Mid Ocean Ridge and alternately orient north or south.
12. Single landmass that broke apart and gave rise to today's continent.
15. Occurs at a Deep Ocean Trench
17. Example of a continental-continental transform fault.
20. Developed the Theory of Continental Drift. Did not take into account movement of the oceanic crust.
25. Oceanic crust nearest the Mid Ocean Ridge is _________ than crust further away.