What Causes a Tsunami?

Answer

Tsunami's are caused by the earth moving deep underwater. Often this movement is caused by earthquakes. The movement causes waves in the water. These stay under the surface until they approach the more shallow waters of a coastline. They then rise up and out of the water as they move onto the land.

Ask.com Answer for: what causes a tsunami

Source

Tsunami are large waves caused by sudden movement of the ocean due to earthquakes, landslides, large volcanic eruptions or meteorite impact in the ocean.

Source: noaa.gov

1 Additional Answer

A tsunami is an immense ocean wave, often originating many miles from land. They are created by the sudden motion of earthquakes, underwater landslides or volcanic eruptions on the ocean floor. Once generated, a tsunami travels at great speed across the ocean and culminate in huge deadly waves when they encounter the shallow waters of a shoreline.

Q&A Related to "What Causes a Tsunami?"

what causes a tsunamis?

A tsunami is caused by an earthquake that happened in the ocean. The earthquake causes water to be displaced in tremendous amounts which causes a tsunami.

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What Caused the Asian Tsunami?

Tsunamis are caused by underwater earthquakes when the tectonic plates at the bottom of the ocean shift. The rift causes massive waves which can destroy coastal areas.

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What Caused the Tsunami in Asia?

The tsunami in asia was caused by an earthquake under the water in the ocean. The tectonic plates shifted, causing the earthquake, thus causing the waves to ripple toward the land.

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How is a Tsunami Caused?

Tsunamis are caused by earthquakes at the bottom of the ocean. When an earthquake occurs, it displaces massive amounts of water. Then, the water will form a small wave on the surface

http://answers.ask.com/Science/Nature/how_is_a_tsu...