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5 tháng 5 2017

A tornado is a rapidly rotating column of air that spins while in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. Various types of tornadoes include the multiple vortex tornado,landspout and waterspout. Though tornadoes can strike in an instant, there are precautions and preventative measures that people can take to increase the chances of surviving a tornado.

8 tháng 5 2017

A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, and other geologic processes. A natural disaster can cause loss of life or property damage,[1] and typically leaves some economic damage in its wake, the severity of which depends on the affected population's resilience, or ability to recover and also on the infrastructure available.[2]

An adverse event will not rise to the level of a disaster if it occurs in an area without vulnerable population.[3][4] In a vulnerable area, however, such as Nepal during the 2015 earthquake, an earthquake can have disastrous consequences and leave lasting damage, requiring years to repair.

Volcanoes can cause widespread destruction and consequent disaster in several ways. The effects include the volcanic eruption itself that may cause harm following the explosion of the volcano or falling rocks. Second, lava may be produced during the eruption of a volcano, and so as it leaves the volcano the lava destroys many buildings, plants and animals due to its extreme heat . Third, volcanic ash generally meaning the cooled ash – may form a cloud, and settle thickly in nearby locations. When mixed with water this forms a concrete-like material. In sufficient quantity ash may cause roofs to collapse under its weight but even small quantities will harm humans if inhaled. Since the ash has the consistency of ground glass it causes abrasion damage to moving parts such as engines. The main killer of humans in the immediate surroundings of a volcanic eruption is the pyroclastic flows, which consist of a cloud of hot volcanic ash which builds up in the air above the volcano and rushes down the slopes when the eruption no longer supports the lifting of the gases. It is believed that Pompeii was destroyed by a pyroclastic flow. A lahar is a volcanic mudflow or landslide. The 1953 Tangiwai disaster was caused by a lahar, as was the 1985 Armero tragedy in which the town of Armero was buried and an estimated 23,000 people were killed.

A specific type of volcano is the supervolcano. According to the Toba catastrophe theory, 75,000 to 80,000 years ago a supervolcanic event at Lake Toba reduced the human population to 10,000 or even 1,000 breeding pairs, creating a bottleneck in human evolution.[8] It also killed three-quarters of all plant life in the northern hemisphere. The main danger from a supervolcano is the immense cloud of ash, which has a disastrous global effect on climate and temperature for many years.

14 tháng 3 2021

TOPIC: TSUNAMI

A tsunami is a series of waves created when a large volume of ocean water is rapidly displaced. Tsunami brings many disasters for humans, animals and plants. Every year many people die from this natural disaster, and animals and plants will be swept away. The word "tsunami" is taken from the Japanese language, the country has suffered these every year. However, because it has been through many times, the people and the government here have taken measures to restore the devastated situation after the tsunami. In addition, tsunamis are often accompanied by volcanic eruptions and earthquakes.

        
14 tháng 3 2021

Today, in Vietnam often encountered many natural disasters such as floods, droughts, hail, tropical storms and other natural disasters. These are the most frightening things people are concerned about. Tropical storms often occur and cause most harm. It usually occurs in the rainy season and occurs most often in central Vietnam and coastal areas. It causes a lot of damage to people and property. First, killing people, livestock and poultry by the flood. Second, crop loss due to flooding. Humans become homeless and lose all their possessions. and many other damages caused by the storm. To prevent and fight against tropical storms, before it takes place, we must make preventive dikes, prepare adequate tools and food and other necessities. When storms occur, people must find safe shelters not to go out. After that, we have to overcome what hurricanes destroy, such as rebuilding houses, and many other things, if we live in that area, we should plant trees, protect the environment and many other practical things.

V
violet
Giáo viên
28 tháng 5 2020

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4 tháng 4 2021

Tham Khảo !

Natural disasters are one of the biggest problems that people have to face to face nowadays. So does Vietnam, we are against natural disasters. The most common natural disasters in Vietnam are hurricanes. The hurricanes can cause damage to houses and peoples. A lot of people lost homes so they don’t have a place to live in. Not only that, they also suffer the pain of losing their relatives. According to statistics, the hurricanes in Vietnam made about 230 people die and a lot of people can’t be found. What is more dangerous than it causes the flood. Flooding is also a dangerous natural disaster because it can cause harm like a hurricane... Additionally, it can make the water line polluted and this is one of the causes that make people and animals sick. From these arguments, we can know about the harmfulness of hurricanes and floods so I will tell you some ways to prevent the hurricanes and floods. First, you should always update the news about the hurricanes. Second, you should prepare essential things such as water, food, clothes, medicines, first-aid-kits,...Third, we should reinforce our house and always be ready to evacuate. In conclusion, I can say that natural disasters are extremely dangerous, but we can prevent them by doing what I say.

 
4 tháng 4 2021

tham khảo!

write a paragraph to describe one of natural disaster

Flood is considered as one of the most dangerous disasters in the world. There was a “historical flood” that happened in Hanoi in 2008. This must be a year that Hanoians can never forget because the rain was so heavy and lasted for many days consecutively that inundated many streets of Hanoi. The rain was considered heaviest in the last 100 years, which caused people to suffer from a lot of damage. According to statistics, many families even suffered from inundation as high level of water flew into their houses. Offices or schools had to make emergency announcement to let their employees and students be at home to avoid any potential accidents that may caused by the pouring rain. Life then had a lot of disturbance and people had to wait until it stopped raining. The rain triggered inconvenience for people in different fields as high death toll was recorded, traffic was in no order or people stood a high chance of dangerous epidemics. Luckily, after a few days, life began to come back to the way it was thanks to concerted effort of both local authority and many people of the city.
12 tháng 3 2018

1. Write about a natural disaster you have read about.

The most destructive disaster that I have experienced was the flood in 2012, in Thanh Hoa province. It had been raining heavily for many days. All homes, trees and animals were flooded. The water got to the roof of houses. Damage was caused to property and people. Many people were injured and died. Rescue workers helped people trapped in the flooded houses and they brought people who were left homeless to safe place. My house was flooded but we had been evacuated before. Although the time has gone by, I still can’t forget that terrible disaster.

12 tháng 3 2018

2. Write a passage describing the schedule for your visit (Choose 4 activities that you would like to do in a 2 day visit to Washington D.C., the capital of the USA.)

This is the schedule for our group’s 2-day visit to Washington DC. On the first day, we plan to expore the city on a hop-on-hop-off trolley at 9 am. Then at 1: 00 we are visiting the White house , where the President of the USA lives. On the second day, we are taking the shuttle bus to visit the National Children’s museum at 8:00. Then at 14-00 we plan to cycle on bike trails in Nationa park.

18 tháng 8 2023

Tham khảo

Five days of heavy rain caused a serious flood in a village in Phu Yen. The flood happened last week. Many houses were flooded, two villagers died, and five others were missing. Rescue workers looked for the missing people, and volunteers gave food and drinks to the victims.

17 tháng 4 2019

1. Air pollution

Air pollution is a most serious problem of the current time all over the world especially in the large cities because of the huge level of industrialization. The release of such air pollutants in heavy concentrations such as smog, particulates, solid materials, etc are getting settled over the city, causing air pollution and health hazards to the people. Lots of dirty wastes produced by people on daily basis especially in the big cities polluting the whole atmospheric air to a great extent.

The release of gaseous pollutants from burning fuel of motor vehicles, industrial processes, burning of garbage, etc are contributing to the air pollution. Some natural pollutants like pollen, dust, soil particles, natural gases, etc are also the source of air pollution.

17 tháng 4 2019

2. Natural disaster

Today, I’d like to tell you about a flood which hit my province, Nghe An, when I was 14 years old.
The flood came after a violent rainstorm. It had been predicted as the biggest flood in history so people had prepared a lot before the flood struck.
You know, at that time, the weather in Nghe An was terrible. It had rained for almost a month.
People had folded and rolled up their furniture, and electrical appliances and other belongings to higher places.
We had also brought outside possessions indoors or tied them down.
Shops had been opened all day and all night for people to buy essential things such as noodles, water or medicine.
When water in rivers and lakes rose up above the normal level and flowed into the land, electricity was cut.
My family and I worked hard to find bricks, stones, and sand bags in order to dam the water that flooded our house.
During the entire week of that event, we were not able to go out of the house.
All the roads were cut off and we did not have running water or phones. Some people had to climb up the roofs as the water from the river flooded their houses very quickly.
They had to sit on the roofs with their families and some of the things that they had been able to bring along until a rescue party came to help them.
They had to use boats instead of cars or walking.
After the flood, there was mud everywhere and water was all polluted. People were sick.
Many houses were damaged, castles were swept away and the prices of essential goods were much higher because of increasing demand.
People cleared up the debris. Volunteers came to help build up houses and clean up furniture.
It was such a long nightmare.

2 tháng 5 2018

Nghe An Province was badly affected again when a typhoon hit the area last night. The storm began at around 11 p.m. and raged thoughout the night. Dozens of people were seriously injured and hundreds of others were left homeless. The severe winds caused extensive damage to property, including homes and businesses, particularly in Cua Lo, a coastal town in Nghe An. The storm had already weakened by the time emergency workers arrived in the area. Rescue operations have started and many people trapped in collapsed or damaged buidings have been freed. Workers are now clearing up the debris left behind by the severe storm. The government has already sent rescue equipment to Nghe An, as well as food and medical supplies. People left homeless have been taken to safe areas, where temporary accommodation will be built to house them. The weather bureau has issued flood warning for Nghe An and nearby provinces as heavy rain is expected to continue over the next few days.