This diagram describes and illustrates the laws of relative rock dating. The laws of superposition, lateral continuity, original horizontality, cross-cutting relationships, and unconformities are represented. Definitions adapted from ck-12 Relative Ages of Rocks, CC-BY-NC 3.0
The high school earth and physical science unit moves through an exploration of tectonic plates, why and how they move, and the earthquakes that they cause. As the final project, teams learn about Early Warning Systems for earthquakes and how they have saved millions of lives in other countries. Teams take on a population in Oregon and design a ShakeAlert system to give them the seconds required to prepare for a mega earthquake.