Indiana University
Indiana University Bloomington: Earthquakes in Indiana [Pdf]
A detailed brochure with lots of information about the earthquakes that occur in Indiana. Discusses plate tectonics, how fault zones developed in the Mississippi River Valley, faults in Indiana, earthquakes that affected Indiana in the...
Science Struck
Science Struck: Theory of Plate Tectonics
A detailed discussion of plate tectonics. Looks at continental drift, types of tectonic plates and plate boundaries, and primary and secondary tectonic plates.
Science Struck
Science Struck: Earthquakes and Volcanic Eruptions
Explains what earthquakes and volcanic eruptions are and how they are related.