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An: Hello Manh , What are you doing ?
Manh : Oh , Hi An . I'm reading a magazine about tsunami .
An : What is tsunami ?
Manh : Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases. The speed of tsunami waves depends on ocean depth rather than the distance from the source of the wave. Tsunami waves may travel as fast as jet planes over deep waters, only slowing down when reaching shallow waters. While tsunamis are often referred to as tidal waves, this name is discouraged by oceanographers because tides have little to do with these giant waves.
An : It sounds terrible .What is it cause ?
Manh: First , it causes many deaths . Since 1850 alone, tsunamis have been responsible for the loss of more than 430,000 lives. Second , the amount of energy and water contained in a huge tsunami can cause extreme destruction when it strikes land. And finally Tsunamis not only destroy human life, but have a devastating effect on insects, animals, plants, and natural resources. A tsunami changes the landscape. It uproots trees and plants and destroys animal habitats such as nesting sites for birds. Land animals are killed by drowning and sea animals are killed by pollution if dangerous chemicals are washed away into the sea, thus poisoning the marine life.
An : How can we to stop it ?
Manh : From my point of view, we need many factors to simulate Tsunami wave than we can find solution for this problem. One of this factor as Gobo A.E. mentioned above, also we need to know how many cycle per each period for example 10 years that happened and also the height of the wave when it attach the land. When we study deeply all factors then we can find solution such as we can made some gates in front of the coast lying horizontal in water when the level of water increase more then the normal this gate change its position to the vertical to crash the wave height and to reduce the damage on the land behind it.
An : That's true.
What is water pollution? Water pollution is a source of water contaminated with chemicals or foreign substances that are detrimental to human, plant or animal health. It occurs when harmful substances get into bodies of water such as lakes, rivers, oceans, etc., which can be dissolved, suspended or deposited in the water. At that time, it greatly affects the environment and organisms around the world.
Therefore, we need to have the right measures to overcome water pollution. Firstly, there must be severe and severe sanctions against individuals, organizations and agencies that commit acts of destroying the environment, affecting people's lives. In addition, it is also necessary to educate the people through propaganda and encouragement such as organizing exchanges to discuss environmental issues at the ward and commune level administrative units ... More detailed articles about the environment in textbooks right from the elementary level, helping students to have the right attitude and view about the environment and its consequences, thereby helping them to know love and protect the environment in which I live. Another way to help protect the environment is to launch volunteer movements more often such as environmental protection in residential areas, garbage collection in public areas, and beach cleaning ...
We need to join hands to protect the environment and avoid pollution for the future of a green, clean, beautiful Vietnam, and for our own life as well as for generations to come! Let's protect the environment to protect our own lives.
Topic 2 :
It's my pleasure to introduce you to New Zealand the island of spectacular scenery. New Zealand is one of the most isolated countries in the world. Many people think New Zealand is close to Australia. But that's not the case. New Zealand is the same distance from Australia as Viet Nam is from Japan. New Zealand lies in the southwest Pacific Ocean and has two large islands ( The North island and The South island ), plus one small island and numerous smaller island. Wellington is the capital city of New Zealand. New Zealand is long and narrow with a total land area of 268,000 square kilometers, while Viet Nam is approximately 331,210 square kilometers. Meanwhile, the population of New Zealand is approximately 4 million people and 95 million people live in Vietnam. As you know, people from New Zealand are called New Zealanders and also Kiwis as the nickname. Their official languages are English, Maori and sign languages. Here are some very interesting facts of New Zealand that you must know. The longest name for a place in the world is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu …I can't say that. That is too long. It is the name of a hill in Hawkes Bay with 85 characters. 10 points if you can pronounce it. Blue Lake, in Nelson Lakes National Park, has the clearest water in the world. Are you afraid of snakes? If yes, New Zealand is the place for you. There are no land snakes, native or introduces in New Zealand . When you meet a Maori person in New Zealand, do you know how to greet them? Touch their nose with your nose. When in New Zealand , don't forget to visit the famous Hobbion movie set of the film " thr Lord of the Ring ". Do you agree with me that New Zealand is country worth visiting? I love New zealand very much.
Tet is a national and family festival. It is an occasion for every Vietnamese to have a good time while thinking about the last year and the next year. At Tet, spring fairs are organized, streets and public buildings are brightly decorated and almost all shops are crowded with people shopping for Tet. At home, every is tidied, special food is cooked,offerings of food, fresh water, flowers and betel are made on the family altar with burning joss- sticks scenting the air. First-footing is made when the lucky visitor comes and children are given lucky money wrapped in a red tiny envelope. Tet is also a time for peace and love. During Tet, children often behave well and friends, relatives and neighbors give each other best wishes for the new year.
Most of the air pollution results from the burning of fossil fuels, motor vehicles, factories, aircraft and rockets. This can cause acid rain which damages water, soil, and vegetation. Air pollution also contributes to the greenhouse effect which can lead to a series of environmental problems such as global warming, polar ice melting, rise of sea levels and loss of land.
Water pollution is a result of dumping pollutants such as detergents, pesticides, oil, and other chemicals in rivers, which makes the water unclean or contaminated. Rubbish blockages in rivers can also cause pollution.
Every time we drive to school, use our heater or air conditioner, clean our windows, or even style our hair, we make choices that affect air pollution. These steps, as well as many others, are things we all can do to help reduce air pollution.