Tsunami/Phase 1/Lesson1 1

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What is a tsunami?
Tsunami are fast-moving, dangerous waves or series of waves. They are caused by large volumes of ocean water being moved by a major disturbance (such as a landslide, volcanic eruption, earthquake or meteorite.) When the wave or waves hit a shoreline, massive destruction to people and property can occur.

The word tsunami is Japanese, meaning 'harbour wave'.

What causes a tsunami?
Tsunami occur due to:


 * large underwater or coastal earthquakes, in which there is significant movement of the seafloor or coast
 * underwater landslides (which may be triggered by an earthquake or volcanic activity)
 * large coastal cliff or lakeside landslides
 * underwater volcanic eruptions.


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Discuss


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