Question

An extremely large wave caused by a violet movement of the earth under the sea.​

Answer 1

Answer:

A tsunami is a series of large waves generated by an abrupt movement on the ocean floor that can result from an earthquake, an underwater landslide, a volcanic eruption or - very rarely - a large meteorite strike. However, powerful undersea earthquakes are responsible for most tsunamis.

Explanation:

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Answer 2

Answer:

A tsunami is a series of great sea waves caused by an underwater earthquake, landslide, or volcanic eruption. ... An earthquake generates a tsunami if it is of sufficient force and there is violent movement of the earth causing substantial and sudden displacement of a massive amount of water.