Earthquake meaning

ûrthkwāk
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The definition of an earthquake is the release of sudden and extreme energy that is caused by shifting in the Earth's crust.
noun
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Earthquakes usually occur along fault lines, or cracks that occur within the Earth’s crust.
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A sudden movement of the Earth's lithosphere (its crust and upper mantle). Earthquakes are caused by the release of built-up stress within rocks along geologic faults or by the movement of magma in volcanic areas. They are usually followed by aftershocks.
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A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity.
noun
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Japan, New Zealand, Alaska are all located on one side of a horseshoe-shaped fault line called the "Ring of Fire" that circles the Pacific Ocean and is responsible for frequent earthquakes and frequently erupting volcanos.
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A shaking of the ground, caused by volcanic activity or movement around geologic faults. [from 14th c.]
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The Mercalli scale is used to measure the earthquake. Anything seven or above is considered extremely dangerous.
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A shaking or trembling of the crust of the earth, caused by underground volcanic forces or by breaking and shifting of rock beneath the surface.
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The San Andreas fault has been the cause behind a number of significant earthquakes, such as the San Francisco Earthquake in 1906, and the Loma Prieta Earthquake in 1989.

A shaking in San Francisco that measures 3.2 on the Richter scale is an example of an earthquake.

noun
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The "Ring of Fire" zone was responsible for the devastating earthquakes in Indonesia in 2004, in New Zealand in early 2011 as well as a 9.0+ quake and a series of offshore earthquakes in Japan in early 2011 which also resulted in a tsunami.
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The San Andreas Fault is a fault line discovered in 1895 that stretches about one thousand and three hundred kilometers through California in the United States, and through Baja California in Mexico.
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A seismometer is used to record and measure the strength of an earthquake.
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Origin of earthquake

  • Middle English ertheqwake, corresponding to earth +‎ quake.

    From Wiktionary