NASA for high school students http://www.nasa.gov/audience/forstudents/9-12/features/index.html
National Geographic http://www.nationalgeographic.com
Turn on the Bunsen burner to see what happens as molecules are heated. Convection Demonstration of particle movement and density
The Rock Cycle Animation & Quiz The Rock Cycle Animation & Quiz
Volcanoes Interactive with videos Volcanoes Interactive with videos
Weather Interactive with Water Cycle Weather Interactive
Dynamic Earth Interactive Dynamic Earth Interactive
Click play, then click the animation where the pointer hand appears. Rock Cycle
Rocks Virtual Lab Rocks Virtual Lab