GEOLOGY

Detailed explanation-1: -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-2: -The two general types of vibrations produced by earthquakes are surface waves, which travel along the Earth’s surface, and body waves, which travel through the Earth. Surface waves usually have the strongest vibrations and probably cause most of the damage done by earthquakes.

Detailed explanation-3: -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. Faults-fractures in Earth where movement has occurred.

Detailed explanation-4: -The energy typically released in an earthquake is kinetic energy, thermal energy and sound energy. The kinetic energy associated with an earthquake is due to the movement of the ground. The thermal energy comes from the friction force that exists in the fault.