Not going into depth on any one topic, this Earth science presentation skims the crust. It touches on the materials that construct the crust and then moves into plate tectonics. This is a useful and colorful note-taking guide for your...

Discover Alfred Wegner's ideas relating to continental drift and seafloor spreading which are both evidence to the concept of plate tectonics.

[Free Registration/Login may be required to access all resource tools.] Discusses what a tectonic plate is and how scientists can recognize its edges, how the plates move by convection in the mantle, the three types of plate boundaries...