http://geology.com/plate-tectonics.shtml
http://upload.wikimedia.org/wikipedia/commons/b/b4/Plate_tectonics_map.gif
http://www.globalchange.umich.edu/globalchange1/current/lectures/evolving_earth/tectonic_map.jpg
http://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_plate_tectonics_world.html
http://www.learner.org/interactives/dynamicearth/plate.html
http://www.globalchange.umich.edu/globalchange1/current/lectures/evolving_earth/evolving_earth.html