what ARE TSUNAMIES
A tsunami is a large and killer wave leaving lots of destruction behind.tsunamis are caused by many different matters.
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A tsunami is usually caused by a disturbance such as when a volcanic eruption or a tectonic plate shift is occurred under water. tsunamis don't increase in height when in deeper waters. They usually build up there height when they reach closer into the shore. they are very rapid when a longer distance from sea. tsunamis can be as fast as 500 miles per hour but then loose some of that speed when they get closer to shore.if u wish to see more facts and closer details whent you may vist this link to a youtube video at