The document summarizes plate tectonics theory. It explains that originally all continents were joined together in a supercontinent called Pangaea, which has since broken apart and drifted to their current locations. The Earth's crust is made up of plates that move relative to each other at boundaries where they converge, diverge or move past each other laterally. These plate interactions cause geological events like mountain building, volcanic activity, and the formation of ocean basins and trenches.

1. Plate Tectonics Casey Ferranti Central Michigan University EDU 290: Technology in Education

3. The continents were once a single landmass

4. He called this landmass PangaeaContinental Drift

6. Two million years ago Pangaea broke apart

8. Present Day http://www.flickr.com/photos/europeanspaceagency/5017629700/

9. Wegener’s ideas evolved into The Theory of Plate Tectonics

11. Plates float on the asthenosphere

12. Made of molten rock

13. Flows like a liquid

15. Convergent Boundaries Divergent Boundaries Transform Fault Boundaries

20. Collision rumples the Earth’s surface

21. Produces mountain rangesContinental-Continental Convergence

22. Himalaya Mountains http://www.flickr.com/photos/dainismatisons/3488357818/

24. Results in volcanic activityOceanic-Continental Convergence http://tmp.kiwix.org:4201/A/Plate_tectonics.html

26. Results in an oceanic trenchOceanic-Oceanic Convergence

27. Mariana Trench http://unheardnomore.blogspot.com/2010/02/hearing-on-marianas-trench-marine.html

29. Creates new ocean floorOceanic-Oceanic Divergence

30. http://www.passmyexams.co.uk/GCSE/physics/plate_tectonics.html This phenomenon is called Seafloor Spreading

32. Surrounding water fills the space

33. Creates a new ocean basin Continental-Continental Divergence

34. The End

35. Plate Tectonics http://www.cotf.edu/ete/modules/msese/earthsysflr/plates1.html Continental Drift and Plate-Tectonics Theory http://www.infoplease.com/ipa/A0001765.html Plate Tectonics http://www.platetectonics.com/book/page_5.asp References