WATCH: Plates Today

Plates Today

Earth's surface is made up of tectonic plates. Tectonic plates are composed of lithosphere, and "float" on top of the asthenosphere. The following screencast introduces the concepts of Earth's interior structure, lithosphere & asthenosphere, continental vs. oceanic plates, and the rate of movement of Earth's tectonic plates.



Sources for images:
www.worldofteaching.com
http://wikimediafoundation.org/wiki/File:Tectonic_plates.png

Last modified: Wednesday, 28 July 2010, 2:44 PM