How to write the composition of the research report in the second volume of the fifth grade
With the arrival of the Spring Festival, there have been many haze weather. It not only affects traffic, but also harms people's health. There are more patients in the hospital. So, what is the cause of air pollution? So how to control this pollution? Therefore, I want to solve this mystery through research.
Second, research methods.
1, Internet search, TV news.
2. Ask parents.
3. Personally, the smog is terrible.
Third, the research content
1, basic situation
With the deterioration of the air, the phenomenon of cloudy days has increased and the harm has increased. Recently, there will be early warning and forecast of cloudy weather in many areas of China. Collectively referred to as "smog"? . From my understanding, fog and haze are completely different to some extent. When there is fog, the air is wet. When smog occurs, the air is relatively dry. It is formed because of this tiny dust, which is represented by the symbol "∞". Haze changes are generally not obvious. When the air mass has not changed greatly and the air mass is relatively stable, it lasts for a long time, sometimes as long as ten days. Because of the weather phenomena such as haze, light fog, sand blowing and smog, it is sometimes difficult for meteorological professionals to distinguish them. We must combine the weather background, sky conditions, weather temperature, color and smell to draw a correct conclusion.
2. Hazards of smoke
After introduction, the smog is terrible. Here you go, Hope? -Some children who are not sensible can try not to breathe outdoors in foggy days. Some people want to wear anti-fog masks when they are outdoors. If you breathe a lot of air outdoors, it will lead to death. Therefore, we must not underestimate this thing.
Fourth, research sentiment.
It is said that the smog is terrible, but he is not so terrible; It is said that smog is not terrible, but it is really scary. As long as everyone can set off less fireworks, smoke less and plant more trees. We can breathe more fresh air. In this way, our natural disasters will be reduced. Let's protect the environment, starting with me!