Illustrates the exponential nature of a logarithmic scale using the Richter Scale. Focuses on the San Andreas System of Faults, but also considers Subduction-related seismic events. Compares many of the most notable earthquakes in California history in terms of the energy released, one vs. another, and the progression of seismic regulation (e.g., the Field Act following the 1933 Long Beach Quake) that resulted in the spectacular success of zero fatalities at a packed World Series stadium on the San Andreas Fault during the 1989 7.1R "Loma Prieta" earthquake in the Bay Area.

(This is the same type of logarithmic scale that will be used to plot the Electromagnetic Spectrum in the subsequent lecture of this video series.)