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
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.
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.
The circum-Pacific seismic belt, often referred to as the Ring of Fire, experiences more earthquakes than anywhere else on Earth. The belt stretches from the southern tip of the Americas north to Alaska, across the Bearing Strait, down through Japan and into New Zealand.
According to the U.S. Geological Society, the area in the Earth's crust where an earthquake forms is called the hypocenter. Unpredictable in nature, earthquakes form when energy from the crust is released, causing vibrations on the surface of the earth. The magnitude of earthquakes can vary exponent