Earth Quakes

Earth Quakes

At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake is located offshore, the seabed sometimes suffers sufficient displacement to cause a. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity.

An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the that creates The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Earthquakes are measured with a; a device which also records is known as a seismograph. The (or the related and mostly obsolete magnitude) of an earthquake is conventionally reported, with magnitude 3 or lower earthquakes being mostly and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified n its most generic sense, the word earthquake is used to describe any seismic event—whether a natural or an event caused by humans—that generates seismic waves. Earthquakes are caused mostly by rupture of geological but also by volcanic activity, landslides, mine blasts, and An earthquake's point of initial rupture is called its or. The term efers to the point at ground level directly above the hypocenter.