Earthquake Topics — Forces

Animations of Seismology Fundamentals — animations illustrating the fundamentals of earthquakes and seismology (Incorporated Research Institutes for Seismology (IRIS))
Earthquake Quartet #1 — USGS seismologist Andrew Michael explores both music and audio playbacks of the earth shaking and finds new ways to learn about the earth, earthquakes, musical instruments and music. (USGS)
Earthquakes, MegaQuakes, and the Movies — discussion about facts versus fantasies (USGS)
Hazards 101, Earthquake — The basics of how the USGS National Earthquake Hazard Maps are made. (USGS)
John Lahr's Earthquake website — Collection of the author's own activities and publications, and links to other useful tidbits. Especially useful if you have your own seismometer, or want to build one. (USGS Emeritus)