1. Topic: Plate Boundaries

2. Plate Tectonics Theory: -

3. Major Concepts The lithosphere is divided into 6 major plates Pacific, American, Indian, African, Eurasian, Antarctic There are also many smaller plates as well

5. What would cause the lithosphere plates to move?

6. *--

8. Plate Boundaries -

9. 3 things can happen at plate boundaries - - -

10. Convergent Plate Boundaries ----

11. Oceanic crust vs. Continental Crust Granite, less denseBasalt, Denser

12. Example: Cascade Mountains http://www.classzone.com/books/earth_science /terc/content/visualizations/es0804/es0804pa ge01.cfm?chapter_no=visualization

13. Trench - Subduction— Area of Subduction

14. Continental vs. Oceanic Result: - Features: 1)- 2)- 3)- Example: Cascade Mts., West US

15. Oceanic crust vs. Oceanic crust

16. Oceanic vs. Oceanic Result: - Features: 1)- 2)- 3)- Example: Mariania Islands, Pacific Ocean

17. Continental crust vs. Continental crust http://www.pbs.org/wnet/savageearth/animations/rift-collide.html

18. Indian Subcontinent Moving Toward Asia http://www.classzone.com/books/earth_sc ience/terc/content/visualizations/es0804/e s0804page01.cfm?chapter_no=visualizatio n

19. Mount Everest is 29,035 ft Grows Larger Each Year Due to Tectonic Forces

20. Continental vs. Continental Result: - Features: 1)- 2)- Example: Himalayas Mountains

21. Diverging Plate Boundaries Plates move apart

22. Rifting zone on Land

23. Rifting zone under the ocean

24. Mid Atlantic Ridge

25. Mid-Ocean Ridge A divergent boundary, - Basalt forming

26. Mid-Atlantic Ridge Underwater

27. Mid-Atlantic Ridge above sea level

28. Iceland

29. Diverging Plates Result: - Features: 1)- 2)- 3)- 4)- Example: Mid-Atlantic Ridge

30. Transform Plate Boundaries -

31. San Andreas Fault California

32. Transform Features: 1)- Example: San Andreas Fault, CA, USA

33. FQ: Why does oceanic crust subduct under continental crust? --