Tsunami is a Japanese word which means a high sea wave. If Tsunami comes at a place, very high sea waves occur at that place. Their height goes upto 10 metre to 50 metre at sea shore. Their speed is quite high. In an open sea, they move at the speed of 400 km-1000 km per hour. Actually if earthquake comes under sea bed, it causes Tsunami. On 26 December, 2004, Tsunami came in South-East Asia which caused a great destruction. Around 10,500 people died in India and it caused a lost of? 10,000 crore to many Indian states.
