What causes earthquakes? Learn the characteristics, secondary effects, and definition of earthquakes. Topics include: The Richter Scale, Tectonic Plates, Alfred Wegener, and more!

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Earthquake Introduction (1:14); --Earthquakes (3:12); -- Tectonic Plates (3:36); -- Seismic Zones (2:09); -- Summary (2:09); -- Credits: Why Are Earthquakes Produced? (0:40);.