Question

How do you understand by the term tsunami and how is it caused?
(long)
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Answer 1

Answer:

Sunami is a water tornado

Answer 2

Explanation:

Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases.