How are tidal waves and tsunamis similar?

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Tidal waves and tsunamis are both types of sea waves. However, they are caused by different forces. Tidal waves are named for the tides, and are a result of the gravitational relationship between the Moon and Earth. Tidal waves begin in shallower waters, but may be as high as 55...

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Tidal waves and tsunamis are both types of sea waves. However, they are caused by different forces. Tidal waves are named for the tides, and are a result of the gravitational relationship between the Moon and Earth. Tidal waves begin in shallower waters, but may be as high as 55 feet in some places. Because of the relationship between the Moon and Earth, tidal waves happen on a daily basis. Tusnami, on the other hand, are the result of displacement of water. Landslides, glacier activity, earthquakes, and underwater explosions can cause displacement of water up to 100 feet high! Because tsunamis are the results of a major displacement of water, they are relatively rare. 

Tidal waves and tsunamis have a similar general appearance--a large mass of water, typically in a wave wall or arc, moving towards the coastline. Both can also have a profound impact on the lives of people who live near the coast, as unexpected or especially large waves can cause damage to people and property. Tsunamis are a little more frightening in this respect, because they are rarely expected, and can tear down miles of inhabited land and kill thousands of people.

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