1,9,48,260,1590 what is the nezt number
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\bold{1. \: \: Tsunamis}1.Tsunamis
1) They are killer waves or giant waves generated by earthquakes, volcanic eruptions or underwater landslides .
It can raise to 15 metres or more in height .
When earthquakes occur in the sea and ocean the sea waves rise to several metres and may reach the coast within a few minutes .
The danger period of Tsunami can continue for many hours after a major earthquake .
Tsunami wave travel at the speed of 500 km per hour and speed increases when it approaches the continents .
The term " Tsunami " has been coined from the Japanese word "Tsu" means Harbour and " Nami "means waves .
In India Tsunami warning Centres has been set up at Hyderabad .
A killer Tsunami hit South East Asian countries on the 26th December of 2004 killing more than 1,50,000 lives .
The emotional economic and ecological toll of the disaster cannot be calculated .
Many villages have lost entire generation .
This was the biggest Tsunami to hit the world in 40 years .
No one could have thought that its effect would ripple worldwide overnight .
A Tsunami travels at a high speed of about 500 to 1,000 kilometres per hour.
However, its speed reduces when it enters the shallow coastal waters .
It is then that the height of Tsunami waves increases .
When a Tsunami wave reaches the coast, it appears as the Wall of water .
With its tremendous energy, the fast moving wave can crush houses and other structures in the coastal areas .
\bold{2. \: \: Mitigation}2.Mitigation
❉ People should be aware of the information given by the tsunami warning Centre located at Hyderabad in India .
❉ People should vacate the coastal areas as soon as the tsunami warning is released .
❉ Seriously injured persons should be given immediately first aid .
❉ Fisherman should not go for fishing .
❉ We should not assume only the first wave is dangerous whereas the successive waves could be more dangerous.
\bold{Precautions}Precautions
❉ In some cases, the sea water may recede up to 800 m from the coast before a Tsunami strikes the area . Do not enter this temporary dry area, as the sea water may come back soon .
❉ Know the height of your street above sea level and the distance from the coast . The areas of great risk are less than 10 metres above sea level and within 2 km from the coast .
❉ Prepare a plan of the evacuation route from your house, school or workplace and find an area about 30 metres above sea level . You should be able to reach a safe location in 15 minutes .
❉ The Tsunami warning systems should be installed in high-risk zones .
\bold{3. \: \: Where \: it \: occurs \: } \:3.Whereitoccurs
Tsunamis mostly occur in the Pacific Ocean and Indonesia .
\bold{4. \: \: How \: it \: is \: caused ?}4.Howitiscaused?
❉ A Tsunami develops when a large mass of water is displaced . This can be caused by an undersea earthquake or a volcanic eruption . When an undersea earthquake occurs it causes large areas of the sea floor to rise or subside . This leads to the occurrence of Huge waves .
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