2. Plate Tectonics Why do we have earthquakes?

7. Two Tectonic Plates That Separate  DivergentBoundary 

9. Mid- Atlantic Ridge Indian Ridge  DivergentBoundary 

10.  Divergent Boundary 

11. Iceland

12. Rift Valley in Africa

14. Two tectonic plates slide past each other.

19. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Andes Mountains

20. Ocean-Ocean Convergent Boundary Aleutian Trench

21. Aleutian Islands 21

22. Continent-Continent Convergent Boundary