What are the natural disasters team will use .

You can prepare some relevant ** first, and introduce the topic; Secondly, let everyone talk about their knowledge and understanding of natural disasters, and the teacher or moderator will summarize; Finally, I will give you some methods of self-rescue and how to help others in disasters, and make the following cards for sorting and collecting related content.

Knowing > Education Science > Science and Technology > Earth Sciences added to the collection has been solved.

Cause-level emergency measures for natural disasters.

Asked by: Romance Tulip - Level 2.

First, the multiplicity of causes of natural disasters.

Natural elements, such as the atmosphere, oceans, and the earth's crust, mutate in their constant motion, such as heavy rains, **, typhoons, etc. When it causes harm to society, it is a natural disaster. Human beings live on the surface of the earth, affect human society or can lead to disasters of variation, mainly occur in the space near the surface, including a certain height of the atmosphere, down to a certain depth of the lithosphere, each circle of natural variation and the corresponding natural disasters, have their own characteristics.

According to the causes of natural variation, they can be divided into atmospheric disasters, oceanosphere disasters, lithospheric disasters and biosphere disasters. [1] (p2-3) The causes of natural disasters are both natural and social.

The natural factors that cause natural disasters have multiple meanings. First, the basic elements of nature, such as light, heat, water, earth, air, animals and plants, are in flux, and they have an impact on human beings and the environment. Second, the change of one element of nature causes changes in various other environmental elements, such as fires, floods, diseases, etc., volcanic eruptions cause cold climate, forest fires, urban destruction, etc., oceans cause tsunamis, tides, etc., drought causes pests and diseases, land desertification, salinization, grassland degradation, land subsidence, ground fissures, etc.

These changes are also harmful to humans and other environmental elements. Thirdly, changes in any celestial body in the universe will not only affect other celestial bodies, but also sometimes affect changes in humans and various other environmental elements on Earth and cause harm. Fourth, the losses caused by natural disasters depend on various factors such as the intensity of changes in natural factors, time scales, areas of occurrence, transportation and communication conditions, and response speed and mode.

In addition to the disasters that natural changes bring to humans, they can sometimes be beneficial. For example, humans can use the law of tidal changes to determine the route of navigation, where and when to fish. For coastal areas, the lower the wind level, the safer beach farming and offshore operations will be.

Under natural conditions, floods have the function of shaping and maintaining ecosystems.

Natural phenomena that cause damage and harm to the natural ecological environment, human settlements and human beings and their lives and property. Such as hurricanes, tsunamis, droughts, floods, volcanic eruptions, asteroid impacts on the earth, etc.

There are sudden disasters such as volcanic eruptions, mudslides, tsunamis, typhoons, and floods;

There are also gradual disasters such as land subsidence, land desertification, drought, and coastline changes that can only gradually appear over a long period of time.

There are also environmental disasters caused by human activities such as ozone layer changes, water pollution, soil erosion, and acid rain.

Major sudden natural disasters worldwide include: drought, floods, typhoons, storm surges, frost damage, hailstorms, tsunamis, volcanoes, landslides, mudslides, forest fires, agricultural and forestry pests and diseases, etc.

**, volcanic eruptions, mudslides, tsunamis, typhoons, floods and other sudden disasters; There are also gradual disasters such as land subsidence, land desertification, drought, and coastline changes that can only gradually appear over a long period of time. There are also environmental disasters caused by human activities such as ozone layer changes, water pollution, soil erosion, and acid rain.

Disasters caused by natural phenomena such as water, drought, disease, insects, birds, beasts, wind, hail, frost, etc.

Storms, rains, floods, tsunamis, etc.

The Strategy proposes effective ways and measures to reduce the impact of disasters caused by natural and hazard factors. There are many things that can be done to reduce the impact of natural disasters, and improving the quality of buildings is one of them. In many cases, death is not caused by itself, and death is often caused by the collapse of a house.

If we build some earthquake-resistant houses in a susceptible area, the chances of people surviving are much better when it happens. Another initiative is legislation. If the law prohibits the construction of hostels or hotels below 200 meters above sea level, it will be safer for tourists in the event of floods or hurricanes.

Education is another strategic initiative that can reduce the negative effects of nature-borne hazards. People who understand the natural factors and disaster mitigation knowledge are more likely to survive when disasters occur. At the time of the Indian Ocean tsunami, many of the residents living on the island of Semilieu survived because they knew that when the ** hit, there was a great risk of a tsunami, and they had to run to the heights.

These are just a few examples of the measures that the ISDR will recommend to countries** that the ISDR hopes will consider to take to make the world a safer place.

There is no way to reduce natural disasters, and we can only say how to better prevent them and reduce the harm of disasters. Seek adoption.

We should pay attention to protecting the environment, reducing low-carbon emissions, and walking more and driving less.

All kinds of events that endanger human life, property and living conditions are commonly referred to as disasters. Throughout human history, it can be seen that there are two main causes of disasters: one is natural variation, and the other is human influence.

Therefore, disasters with natural variation as the main cause are usually called natural disasters, such as ** and storm surge; Disasters that are primarily caused by human effects are called man-made disasters, such as human-caused fires and traffic accidents. The process of natural disasters can be long and short, slow and urgent. Some natural disasters, when the change of the causative factors exceeds a certain intensity, will manifest as disaster behavior in a few days, hours or even a few minutes and seconds, such as **, floods, hurricanes, storm surges, hail, etc., this kind of disaster is called a sudden natural disaster.

Although droughts, crop and forest diseases, insects, and weeds generally take a few months to become disasters, the formation and end of disasters are still relatively rapid and obvious, so they are also classified as sudden natural disasters. In addition, there are some natural disasters that gradually appear to become disasters under the condition of long-term development of disaster-causing factors, such as land desertification, soil erosion, environmental degradation, etc., which usually take several years or more to develop, which is called slow-onset natural disasters. Many natural disasters, especially those of high grade and intensity, often lead to a series of other disasters occurring one after another, a phenomenon called disaster chain.

The earliest occurring disaster in the disaster chain is called a primary disaster; Disasters induced by primary disasters are called secondary disasters. After the occurrence of natural disasters, the harmonious conditions for human existence are disrupted, which can also give rise to a series of other disasters, which are generally called derivative disasters. For example, after a major drought, there is an extreme shortage of surface and shallow fresh water, forcing people to drink groundwater with high fluoride content at deep levels, which leads to fluorosis, which is called a derivative disaster.

Of course, the process of disasters is often complex, and sometimes a disaster can be caused by several causes, or a single cause can cause several different disasters at the same time. In this case, the determination of the type of disaster should be based on the leading cause of the disaster and its main manifestations. "Natural disasters"It is an abnormal phenomenon that occurs in the natural world on which human beings depend, and the harm caused by natural disasters to human society is often shocking.

Among them, there are sudden disasters such as **, volcanic eruptions, mudslides, tsunamis, typhoons, floods, etc.; There are also gradual disasters such as land subsidence, land desertification, drought, and coastline changes that can only gradually appear over a long period of time. There are also environmental disasters caused by human activities such as ozone layer changes, water pollution, soil erosion, and acid rain. These natural disasters and environmental damage are interlinked in a complex way. It has become a common theme of the international community for mankind to understand the occurrence and development of these disasters in a scientific sense and to minimize the harm caused by them.

Disasters affect behavior and mental health in a variety of ways: disasters can bring substantial trauma and mental disorders; The vast majority of suffering disappears within a year or two after the disaster, and people are able to adjust themselves; Chronic mental disorders caused by disasters are very rare; The overall impact of some disasters may be positive because it may increase social cohesion; Disasters disrupt organizations, families, and individual lives. Natural disasters can cause stress, anxiety, depression, and other emotional and sensory problems.

The timing of the impact and why some people can't adapt as soon as possible is still unknown. In the aftermath of floods, tornadoes, hurricanes and other natural disasters, victims show signs of bad thoughts, anxiety, depression and other emotional problems that can last up to a year. The persistent effects of an extreme catastrophe called post-traumatic stress disorder (PTSD) is an anxiety disorder in which the experience of trauma is accompanied by persistent, unnecessary, uncontrollable thoughts of unrelated events, a strong desire to avoid mentioning events, sleep disturbances, social withdrawal, and intense alertness.

What are the common natural disasters?

**, volcanic eruptions, mudslides, tsunamis, typhoons, floods and other sudden disasters; There are also land subsidence, land desertification, drought, ozone layer changes, water pollution, soil erosion, acid rain, etc.