An earthquake is shaking or trembling of the earth that is volcanic or tectonic in origin. "A broadly satisfying explanation of the majority of can be given in terms of what is called plate tectonics. The basic idea is that the Earth's outermost part also called the lithosphere consists of several large and fairly stable slabs of solid and relatively rigid rock called plates" (Branely 154). These plates continuously move pushing and rubbing against each other. Since the earliest of time people have been looking for an explanation for . Th ....