Earthquakes NGSS Science SC.7.E.6.7 STEM Lesson on epicenter, hypo-center, faults, earthquake wave types, the Richter Scale, Magnitude and Intensity, Solid Liquefaction, earthquake zones, the elastic rebound theory, the theory of tectonic plates, and more. Earthquake origin FaultsEarthquake wave types - primary & secondary wavesThe Richter ScaleMagnitude & intensitySolid LiquefactionDetermining of epicenter & hypocenterEarthquake zones- Factors that affect earthquake destruction- The Elastic Re