The orientation and motion of these events are represented on so-called “beachball plots.” The intensity and number of clusters of these events follow a logarithmic law partially named for Beno Gutenberg. A “shadow zone” (10[2])where these events cannot be detected (10[1])is caused by P wave refraction. (10[3])These events (10[2])result from the release of built-up strain per elastic (10[1])rebound theory. (10[1])States like Oklahoma have seen an increased rate of liquefaction caused by these events from fluid injection used in fracking. These events’ strength is measured with the moment magnitude (10[1])scale. For 10 points, what geologic events occur at faults and have their strength reported with the Richter scale? ■END■