GEOLOGY

Detailed explanation-1: -Earthquakes are the result of sudden movement along faults within the Earth. The movement releases stored-up ‘elastic strain’ energy in the form of seismic waves, which propagate through the Earth and cause the ground surface to shake.

Detailed explanation-2: -Earthquake-Any vibration of Earth produced by the rapid release of energy. Earthquake-Any vibration of Earth produced by the rapid release of energy. Focus-the point within Earth where the earthquake starts. Epicenter-the location on the surface directly above the focus.

Detailed explanation-3: -1) Energy for Earthquakes comes from radioactive energy in Earth’s mantle. Radioactive decay produces heat that causes convection in the mantle. This movement is transferred to Earth’s crust where movement stores up energy in rocks, like a spring being stretched.

Detailed explanation-4: -Earthquakes are vibrations of the Earth produced by the release of energy during a sudden rupture of the Earth. a. Primary waves (or P waves) are compressional waves that vibrate in the direction of propagation; think of “push” waves. These waves move sort of like a wave moving along a slinky.

Detailed explanation-5: -Ground shaking is a term used to describe the vibration of the ground during an earthquake. Ground shaking is caused by body waves and surface waves. As a generalization, the severity of ground shaking increases as magnitude increases and decreases as distance from the causative fault increases.