What is a tsunami? A tsunami a large, destructive wave of water from the sea that is caused by earthquakes, volcanoes, hurricanes, and other strong storms.
What kind of damage do tsunamis cause? Tsunamis are sudden occurances, thus their surprise is responsible for a large number of deaths. They can also cause damage to ships at sea and the property and land in which they cause flooding.
What happens to a tsunami as it approaches land? As a tsunami approaches land, its speed decreases while its height increases. This is because the speed of a tsunami wave is connected to the depth of the water. Since the depth of the water decreases as you approach the coast, this occurs.