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  1. Dictionary
    earthquake
    /ˈəːθkweɪk/

    noun

    • 1. a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action.

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  2. www.britannica.com › science › earthquake-geologyEarthquake | Definition, Causes, Effects, & Facts | Britannica

    Jun 28, 2024 · An earthquake is a sudden shaking of the ground caused by the passage of seismic waves through Earth's rocks. Learn about the causes, effects, and types of earthquakes, and how they are studied by seismology.

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  4. en.wikipedia.org › wiki › EarthquakeEarthquake - Wikipedia

    In its most general sense, an earthquake is any seismic event—whether natural or caused by humans—that generates seismic waves. Earthquakes are caused mostly by the rupture of geological faults but also by other events such as volcanic activity, landslides, mine blasts, fracking and nuclear tests.

  5. spaceplace.nasa.gov › earthquakes › enWhat Is an Earthquake? | NASA Space Place – NASA Science for Kids

    Jun 13, 2024 · An earthquake is an intense shaking of Earth’s surface caused by movements in its outermost layer, the lithosphere. Learn how earthquakes happen, how we measure them, and if they occur on other planets.

  6. www.usgs.gov › faqs › what-earthquake-and-what-causes-them-happenWhat is an earthquake and what causes them to happen?

    An earthquake is a sudden slip on a fault that releases energy in waves that cause shaking. Learn about the types, causes, and effects of earthquakes, and how to prepare for them, from the U.S. Geological Survey.

  7. www.internetgeography.net › topics › what-is-an-earthquakeWhat is an earthquake? - Internet Geography

    An earthquake is a sudden, violent shaking of the ground caused by the sudden release of energy in the Earth’s lithosphere. Learn about the causes, effects and measurement of earthquakes on this web page.

  8. dictionary.cambridge.org › dictionary › englishEARTHQUAKE | English meaning - Cambridge Dictionary

    An earthquake is a sudden violent movement of the earth's surface, often causing damage and sometimes deaths. Learn more about the causes, effects and types of earthquakes from Cambridge Dictionary, with examples and collocations.

  9. geo.libretexts.org › Bookshelves › Geology11.1: What is an Earthquake? - Geosciences LibreTexts

    Apr 24, 2024 · An earthquake is the shaking caused by the rupture (breaking) and subsequent displacement of rocks (one body of rock moving with respect to another) beneath Earth’s surface. A body of rock that is under stress becomes deformed.