How much do you know about rocks? Well, if you are a bit unsure about distinguishing an igneous rock from a sedimentary rock you'll certainly be on solid ground after taking a tour through this feature created by Annenberg Media. Visitors can make their way through graphically-enhanced sections that include "Types of Rocks", "How Rocks Change", and "The Rock Cycle Diagram". In the "Types of Rocks"...

Educators, students, and anyone interested in brushing up their earth science knowledge may want to check out this resource on the rock cycle created by the Geological Society of London. The main page features a colorful diagram showing an overview of the rock cycle with clickable labels leading to explanations of the cycle's various processes (e.g. weathering, sediment deposition, uplift), with...