An earthquake is a sudden shaking or rolling of the ground caused by movements under the earth's surface. Some earthquakes can be mild while others may be severe causing massive devastation to structures, life and other ... More »

A person who studies earthquakes is known as a seismologist. In addition to studying earthquakes, a seismologist also studies different vibrations in the Earth. These specialists use sophisticated tools, such as seismogr... More »

To prepare for an earthquake, prepare your house by placing objects to minimize falling damage. Draft an emergency plan, and practice earthquake drills. During an earthquake, drop to your hands and knees, cover your head... More » Science Earth Science Earthquakes

A seismometer measures movements in the ground during an earthquake and creates electric signals that can be read to determine an earthquake's magnitude. Seismometers are contained within a device called a seismograph th... More »

An earthquake is a violent shaking of the ground that often causes destruction to life and property. An earthquake occurs when two parts of earth slip past one another, creating seismic waves. Some areas are especially p... More » Science Earth Science Earthquakes

The epicenter of an earthquake is the point on the surface of the Earth directly above the point in the crust where a seismic rupture occurs. This origin point within the crust is called the hypocenter or focus. More »

The surface directly above where an earthquake starts is called the epicenter, according to the United States Geological Survey. The location of the earthquake's origin is the fault or fault plane, and that is the place ... More »