B) Earthquake Effects: A computer animation and paper model http://giseis.alaska.edu/Input/affiliated/lahr/taurho/eqeffects/introduction.html
C) All About Plate Tectonics: Earth's Plates and Continental Drift
http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml
http://www.geo.mtu.edu/volcanoes/world.html
Students use the Internet to research data on earthquakes and volcanoes and plot locations to determine continental plate boundaries
http://cse.ssl.berkeley.edu/lessons/indiv/coe/summary.html
http://magic.geol.ucsb.edu/~fisher/