Question

an essay on TSUNAMI .

Answer 1

A tsunami is a series of fast moving waves in the ocean caused by powerful earthquakes or volcanic eruptions. A tsunami has a very long wavelength. It can be hundreds of kilometerslong. Usually, a tsunami starts suddenly. The waves travel at a great speed across an ocean with little energy loss. They can remove sandfrom beaches, destroy trees, toss and drag vehicles, houses and even destroy whole towns. Tsunamis can even be by caused meteorite strikes, though it is very rare.

The water often draws back from the seacoast half of the wave period prior to the wave getting to the coast. If the slope of the coast is not deep, the water may pull back for hundreds of meters. People who do not know of the danger will often remain at the shore.

Tsunamis cannot be prevented. However, there are ways to help stop people dying from a tsunami. International and regional warning systems, especially for the Pacific Ocean, issue alerts before the big waves reach the shore. Because an earthquake that caused the tsunami can be felt before the wave gets to the shore, people can be warned to go somewhere safe.

The deadliest tsunami recorded was on 26 December 2004. It was caused by an earthquake. The earthquake was said to have a magnitude of 9.3 on the Moment magnitude scale. It was centered in the ocean near the coast of Sumatra, Indonesia. Over 215,000 people, mainly on the shores of the Indian Ocean, died from this disaster. The giant wave moved very quickly. Hundreds of thousands of people in Indonesia, Sri Lanka, Thailand, India, Somalia, and other nations, were killed or injured by it.

Tsunamis are often called tidal wavesbecause they usually rise and fall more slowly than ordinary ocean surface waves. This name is misleading, because tsunamis are not related to tides; they merely rise slowly like tides do, though less slowly.

Answer 2

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Tsunami➫ A great sea wave produced especially by submarine earth movement or volcanic eruption.

♦ It is also called tidal waves.

♦ It is an extremely large wave caused by a violent movement of the earth under the sea.

♦ It travel hundreds of miles over the open sea and cause extensive damage when it encounters land.

➧ Causes of Tsunami:-
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❱ Undersed earthquakes
❱ Landslides
❱ Volcanic Eruptions
❱ Meteorites and Asteroids

➧ Effects of Tsunami:-
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❱ They cause devastating effect on insects, animals, plants & natural resources.

❱ It changes the landscape.

❱ It uproots trees & plants and destroys animal habitats.

❱ It causing devastating property damage and loss of life.


➧ Precautions are:-
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❱ Get to high ground as far inland as possible.

❱ Be alert to signs of a Tsunami, such as a sudden rise or draining of ocean waters.

❱ Listen to emergency information and alerts.

❱ If you are in a boat, go out to sea.

➧ Preparedness are:-
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❱ Practice your evacuation route.

❱ Use a radio to keep informed of local watches and warnings.

❱ Talk to your insurance agent.

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