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www.reference.com/science/earthquake-form-25d7c6849ed4d2c

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.

www.reference.com/article/earthquakes-form-dd870ccd16bd416b

Earthquakes are formed by a sudden, violent underground movement of the Earth's crust. These natural phenomena typically occur along a fault line or fault plane, which is a geological region of compressed rocks dividing crustal plates.

www.reference.com/science/earthquake-d1738ba84e32afa3

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.

www.reference.com/article/causes-earthquake-e0d073551249a7d

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.

www.reference.com/science/effects-earthquake-14f3d6bbf1f5d8f2

The effects of an earthquake range from mild to severe and include structural damage, damaged gas lines, tidal waves, fires, avalanches and flooding. The amount of damage an earthquake can cause depends greatly on the size of the earthquake. The 1994 earthquake in Northridge, California was a magnit

www.reference.com/article/earthquakes-start-b21e5007f3ec1903

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.

www.reference.com/article/earthquakes-happen-f1fcb68aa6aef7c6

Earthquakes happen when rock beneath the earth suddenly moves. Stresses in the earth make blocks of rock break and move along a fault line, which is a crack in the earth. The rocks may move, slip downward, upward or sideways. Many earthquakes take place on the edge of the seas. As of 2014, earthquak

www.reference.com/article/earthquake-occur-ea267c69389b4ed9

Earthquakes occur due to the movement of tectonic plates in the Earth's crust. Plates constantly shift and move, building energy. The release of that energy is an earthquake.

www.reference.com/science/first-earthquake-69c7ae0c417db317

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.

www.reference.com/article/prepare-earthquake-bfb491a99b945830

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 and neck, and hold on.