Volcanoes http://volcano.und.nodak.edu/
Volcanoes http://www.learner.org/exhibits/volcanoes/
Volcanoes http://www.geo.mtu.edu/volcanoes/
Satellite Images of some of the world's most active volcanoes http://www.ssec.wisc.edu/data/volcano.html
Plate tectonics, causes of earthquakes, maps showing earthquake zone around the world http://www.seismo.unr.edu/ftp/pub/louie/class/100/plate-tectonics
games and useful information about earthquakes http://www.fema.gov/kids/quake.htm
Pompeii: Virtual Volcano activity and Quiz http://dsc.discovery.com/convergence/pompeii/pompeii.html
Volcanoes http://www.cotf.edu/ete/modules/volcanoes/volcano.html
Interactive site where you can change variables and build different types of volcanic cones and earthquakes http://www.nationalgeographic.com/forcesofnature/interactive/