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  1. Sep 12, 2024 · earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earth ’s rocks. Seismic waves are produced when some form of energy stored in Earth’s crust is suddenly released, usually when masses of rock straining against one another suddenly fracture and “slip.”. Earthquakes occur most often along geologic ...

  2. An earthquake is a sudden slip on a fault that releases energy in waves. Learn about the types of faults, plates, and earthquakes in California and other regions from the U.S. Geological Survey.

  3. Why do earthquakes happen? Earthquakes are caused by the movement of the Earth’s tectonic plates. Earthquakes occur where the earth’s plates meet along plate boundaries (see plate boundaries page for more information on this). For example, as two plates move towards each other, one can be pushed down under the other, into the mantle.

  4. Oct 11, 2024 · An earthquake is an intense shaking of Earth’s surface caused by movements in its outermost layer, the lithosphere. Learn how tectonic plates, faults, seismic waves and seismometers are related to earthquakes on Earth and other planets.

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  6. Jul 27, 2022 · A magnitude 8.0 earthquake releases 32 times more energy than a magnitude 7.0. The higher magnitude earthquakes release hugely more energy than the lower magnitude ones and that's why they cause such immense destruction: it's the energy (which all has to go somewhere) that causes the damage.

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  7. Oct 18, 2022 · Earthquakes occur when vast amounts of energy are released from Earth 's crust in the form of seismic waves. The waves radiate outwards from the source of the stress, known as the hypocenter, and ...

  8. Earthquakes occur when tectonic plates move against each other or within themselves, releasing pressure in the form of seismic waves. Learn about the types of earthquakes, the regions where they occur, and the effects of fracking on seismic activity.