How are Tsunamis formed

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Tsunamis are formed by waves in the ocean. Earthquakes can happen in the water and the earthquake makes waves 
go up and down in the ocean. Then the waves come to shore and makes a Tsunami and depends on the tides.

Types of Tsunamis

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There are lots of different types of tsunamis. There can be very wide and massive tsunamis on shore.  And the hight is very tall. 
In a tsunami there are lots of damage and they hit coastlines,houses and cars.

Effects on people and land 

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Tsunamis are very strong and damage bulding's and in that way people lose their homes. Tsunamis sweep people off their feet and they can die from drowning. A tsunami can cause people to lose their jobs. They can result in floods in the area near the cost.