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Tsunami

           Now,many disasters was happened in the world.the disasters can damage the environment,loss of life ,and so on.The examples of the disasters are flood,landlides,tsunami ,tornado and another.But,the biggest of disasters in the world is tsunami that have big wave.Tsunami is Japanese name for Harbor Wave.It is one of the biggest disaster caused by an underwater earthquake a volcanic eruption or some other massive movement.

          Tsunami is monster sea with several characteristic.In the deep ocean,tsunami has wavelength of about 200 kilometres(120 mi), the wave speeds about 800 kilometeres  per  hour(500 mph) and tsunami appear as a rapidly rising with a maximum height of up 30 meters.But  in the deep sea, tsunami just has wavelength about 100 meters(330 ft),about  the speeds,the wave speeds  about  90 kilometres per hour, and tsunami’s hight  can be only 1 or 2 meters tall.

         Tsunami is part of huge waves.The beginning of tsunami is as tsunami approaches the coast and  water became shallow,and make small  waves ,it slows and tsunami may take minutes to reach full  height.Then the waves may grow to be many meters hight and have a strong of energy.Finally,when the wave reaches the coast,a tsunami appear as a rapidly rising.

         Tsunami  is big waves that is very danger.If tsunami happened  ,it is capable of crushing  homes and another buildings.Tsuanami can makes many victim sure.While tsunami is difficult to detected,so we must be careful.