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1. Dictionary

   tsunami

   /(t)sʊˈnɑːmi/

   noun

   • 1. a long, high sea wave caused by an earthquake or other disturbance: "the loss of human lives from this latest tsunami is staggering"
   • ▪ an arrival or occurrence of something in overwhelming quantities or amounts: "a tsunami of data pours into the CNBC newsroom every minute of every trading day"

   Word Origin late 19th century: from Japanese, from tsu ‘harbour’ + nami ‘wave’.

   Scrabble Points: 9

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2. People also ask

   What causes a tsunami?

   • Unlike normal ocean waves, which are generated by wind, or tides, which are in turn generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water from a large event. Tsunami waves do not resemble normal undersea currents or sea waves because their wavelength is far longer.

   Tsunami - Wikipedia

   en.wikipedia.org/wiki/Tsunami

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   How does a tsunami work?

   • A tsunami is usually composed of a series of waves, called a wave train, so its destructive force may be compounded as successive waves reach shore. People experiencing a tsunami should remember that the danger may not have passed with the first wave and should await official word that it is safe to return to vulnerable locations.

   Tsunami Facts and Information - National Geographic

   www.nationalgeographic.com/environment/article/tsunamis

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   What does tsunami mean in Japanese?

   • The term has become commonly accepted in English, although its literal Japanese meaning is not necessarily descriptive of the waves, which do not occur only in harbours. Tsunamis are sometimes referred to as tidal waves.

   Tsunami - Wikipedia

   en.wikipedia.org/wiki/Tsunami

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   What are the characteristics of a tsunami?

   • Several terms are used to describe the different characteristics of tsunami in terms of their height: Amplitude, Wave Height, or Tsunami Height: Refers to the height of a tsunami relative to the normal sea level at the time of the tsunami, which may be tidal High Water, or Low Water.

   Tsunami - Wikipedia

   en.wikipedia.org/wiki/Tsunami

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3. www.britannica.com › science › tsunamiTsunami | Definition, Meaning, & Facts | Britannica

   www.britannica.com › science › tsunami

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   Jun 18, 2024 · A tsunami is a catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. Learn how tsunamis are generated, propagated, and affected by the seafloor and coastline, and see examples of some of the worst tsunamis in history.

   • Author: The Editors of Encyclopaedia Britannica

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

   en.wikipedia.org › wiki › Tsunami

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   As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its speed decreases below 80 kilometres per hour (50 mph). Its wavelength diminishes to less than 20 kilometres (12 mi) and its amplitude grows enormously—in accord with Green's law.

5. Videos

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     How tsunamis work - Alex Gendler

     24 Apr 2014

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     The science of tsunami | How does an Earthquake cause Tsunami | Education.

     2 Feb 2022

     765.1K views

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     Rare Video: Japan Tsunami | National Geographic

     13 Jun 2011

     93.2M views

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6. byjus.com › free-ias-prep › tsunamiTSUNAMI - What is Tsunami, Its Causes & Characteristics ...

   byjus.com › free-ias-prep › tsunami

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   Learn what a tsunami is, how it is generated by earthquakes, volcanic eruptions and other causes, and how it affects the coasts. Find out the characteristics, examples and mitigation measures of tsunami for UPSC exam preparation.

7. oceanservice.noaa.gov › facts › tsunamiWhat is a tsunami? - NOAA's National Ocean Service

   oceanservice.noaa.gov › facts › tsunami

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   A tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions. On September 29, 2009, a tsunami caused substantial damage and loss of life in American Samoa, Samoa, and Tonga. The tsunami was generated by a large earthquake in the Southern Pacific Ocean.

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9. sciencenotes.org › what-is-a-tsunami-definitionWhat Is a Tsunami? Definition and Explanation

   sciencenotes.org › what-is-a-tsunami-definition

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   Aug 23, 2023 · A tsunami is a giant wave or series of waves produced by an earthquake, volcano, or other event that displaces a large amount of water. Learn about the causes, characteristics, effects, and mitigation of tsunamis from this web page.

10. www.nationalgeographic.com › article › tsunamisTsunami Facts and Information - National Geographic

    www.nationalgeographic.com › article › tsunamis

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    A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet, onto land. Learn how tsunamis are caused by underwater earthquakes, landslides, or meteorites, and how they can be detected and avoided.

11. spaceplace.nasa.gov › tsunami › enWhat Is a Tsunami? | NASA Space Place – NASA Science for Kids

    spaceplace.nasa.gov › tsunami › en

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    Jun 13, 2024 · A tsunami is a large wave caused by movements in Earth's crust, such as earthquakes or volcanoes in the ocean. Learn how tsunamis form, how they can be dangerous, and how NASA satellites watch for them.