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The U.S. Geological Survey reports that, as of 2014, Alaska accounts for about half of all earthquakes registered in the United States. The USGS also indicates that many smaller magnitude earthquakes go unreported in the state. California has the second-most reported earthquakes among U.S. states.


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 natural resources.


Earthquakes are caused by sudden movement in opposing tectonic plates in the earth. As plates move against each other, sometimes the rocky edges catch against one another. The rest of the plate remains in motion, putting stress on the sticking point, and when it gives way, an earthquake occurs.


Earthquakes occur when two blocks of Earth's crust slip past each other suddenly. Tectonic plates fit together like pieces of a puzzle and are continually moving. The edges of tectonic plates are rough and sometimes stick, causing an earthquake when they break free.


The first earthquake to ever take place is unknown as it happened before the records of the events were kept. The first recorded earthquake was in 1769.


Earthquakes are natural processes that occur beneath the earth's surface and, if strong enough, their reverberations can not only be felt by humans but can induce significant damage to the environment. Scientists are constantly striving to learn more about the causes and processes of earthquakes. Th


The three main types of earthquakes are transform, convergent and divergent. Transform fault earthquakes are sometimes called strike-slip earthquakes because they occur when tectonic plates slide against one another. Convergent earthquakes occur when land masses are thrust toward each other, while d


Earthquakes are caused by the collision of tectonic plates. These plates are a part of the Earth's crust. Continents float on tectonic plates that move very slowly over centuries. There are many tectonic plates all over the Earth's crust.


Indonesia generally is considered to the country with the most earthquakes. Indonesia possesses this distinction because it lies in what is considered to be a highly active seismic zone.


Earthquakes happen when the boundaries of the Earth's tectonic plates bump and slide past one another; sometimes, they get stuck on jagged edges and cause earthquakes once they are released. These earthquakes are always followed by aftershocks starting from the same epicenter.