Wilderness Classroom
Ocean Life
Our oceans are composed of many complex relationships. Young oceanographers explore relationships between organisms, understand the world ocean's currents, and discover the effects of water pollution and how it behaves. There are...
National Geographic
National Geographic: Encyclopedia: Ocean Trench
Comprehensive information about deep-ocean trenches. Includes maps, a video [1:29], and a vocabulary list.
Encyclopedia Britannica
Encyclopedia Britannica: Geology: Deep Sea Trench
Detailed information about oceanic trenches, their structure, and how they are formed. Discusses the twenty trenches that exist around the world. Includes several labeled illustrations.
Indiana University
Indiana University: Evolution of Continents and Oceans
A course lecture on how the Earth's geological features have evolved through the movements of tectonic plates. Explains the different types of plate boundaries and how they manifest in geological formations. Also describes the structure...
Other
San Andreas fault.org: Tectonics
Provides a good overview of plate tectonics with embedded links to related information.