Earthquakes

Tremor that follows, and smaller than a major earthquake

vibration of the earths crust

Point on the earth’s surface directly above the focus of an earthquake

Area along a fault, at which slippage first occurs starting an earthquake

Theory that rocks are strained past a certain point or fracture in spring back to their original shape.

A group of interconnected faults

Amount of damage caused by an earthquake

A measure of the energy released by an earthquake, describes the amount of ground motion

Scale that expresses the intensity of an earthquake with a Roman numeral and a description.

Earthquakes with a magnitude less than 2 1/2 on the Richter scale.