What is a tsunami?

Answer

A tsunami is a series of large waves that move rapidly across the water. Tsunamis are caused by landslides, volcanic eruptions and earthquakes. These waves can move across the open ocean at speeds of up to 500 miles an hour.

A strong earthquake can trigger a tsunami. The wavelength of a tsunami is long, and sometimes the distance from the crest of one wave to that of another may exceed 300 miles. This long wavelength differentiates tsunamis from regular ocean waves. In deep water, tsunamis travel fast. As the tsunami nears shore, it slows down and builds up into giant waves that sometimes rise over 100 feet in height. Tsunamis often occur along the Ring of Fire, an area rich in volcanic and seismic activity.

Q&A Related to "What is a tsunami?"
Is a series of waves, made in an ocean or any body of water by an earthquake, volcanic eruption, meteorite impact or landslide. I haven't heard of tsunami before until it hit at killed
http://www.ask.com/web-answers/Science/Geography/w...
Tsunami is a series of waves caused by a massive landslide or earthquake either on land or at the sea floor. The tsunami wave train comes in as a series of waves that can be separated
http://www.ehow.com/about_5399544_warning-signs-ts...
a tusumami is a natral disaster.
http://wiki.answers.com/Q/What_are_Tsunami_s
Here is a simple but effective explanation that I just came across on the BBC website. http://www.bbc.co.uk/news. /scienc.
http://www.quora.com/What-causes-tsunami
1 Additional Answer
Ask.com Answer for: what is a tsunami
Tsunami are large waves caused by sudden movement of the ocean due to earthquakes, landslides, large volcanic eruptions or meteorite impact in the ocean.
Most tsunami are caused by large earthquakes on the seafloor when slabs of rock move past each other suddenly, causing the overlying water to move.
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