Earthquake | Definition, Causes, Effects, & Facts | Britannica
6 天之前 · Earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earth’s rocks. Earthquakes occur most often along geologic faults, narrow zones where rock masses move in relation to one another.
Earthquake - Wikipedia
In its most general sense, an earthquake is any seismic event—whether natural or caused by humans—that generates seismic waves. Earthquakes are caused mostly by the rupture of geological faults but also by other events such as volcanic activity, landslides, mine blasts, fracking and nuclear tests.
What is an earthquake and what causes them to happen?
What is an earthquake and what causes them to happen? An earthquake is caused by a sudden slip on a fault. The tectonic plates are always slowly moving, but they get stuck at their edges due to friction.
Earthquake Definition & Meaning - Merriam-Webster
2002年11月14日 · The meaning of EARTHQUAKE is a shaking or trembling of the earth that is volcanic or tectonic in origin. How to use earthquake in a sentence.
The Science of Earthquakes | U.S. Geological Survey - USGS.gov
An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane . The location below the earth’s surface where the earthquake starts is called the hypocenter , and the location directly above it on the surface of the earth is called the epicenter .
Earthquakes: Definitions, Causes, Effect, Measurement ...
2023年11月28日 · Earthquakes are natural geological phenomena that occur when there is a sudden release of energy in the Earth’s crust, resulting in seismic waves. These waves cause the ground to shake, often leading to the displacement of the Earth’s surface.
What Is an Earthquake? | NASA Space Place – NASA Science for …
2024年11月8日 · An earthquake is an intense shaking of Earth’s surface. The shaking is caused by movements in Earth’s outermost layer. Why Do Earthquakes Happen? Although the Earth looks like a pretty solid place from the surface, it’s actually extremely active just below the surface.