The composition of smog is 300 words.

The composition about smog is 300 words

Chapter 1: Hazy weather

The sky is always gray these days, and it's hard to see the blue sky and the sun. What's going on here?

I didn't know it was caused by air pollution until I asked my mother. It's called haze weather. Hazy weather is a lot of tiny dry dust and pollution particles suspended in the air, so that everything is gray, like a veil, and things in the distance can't be seen clearly. Mom said that smog weather is not good for people's health. Wear a mask when going out and try not to exercise outdoors. Otherwise, polluted particles will be inhaled into the human body, making it easy to get sick.

I asked my mother, how is the haze weather formed? Mom said it was caused by car exhaust, factory exhaust and burning boilers.

Alas, I really hope that one day people can build machines that can absorb this polluted waste gas and turn it into fresh air. So we can see blue sky and white clouds every day.

Mom said that in the future, as long as everyone knows how to save energy and protect the environment: drive less cars, turn on less air conditioners and set off less firecrackers, there will be less and less smog weather.

So, for the sake of blue sky and white clouds, for the sake of our health, let's protect our environment together from me and everyone.

Chapter two: the smog in my hometown

In recent days, the streets are full of people wearing masks. I think: it's sunny and hot today. Why are they all wearing masks? I rushed to ask my mother, and she said, "In recent days, there has been smog in most areas, and smog has done great harm to human body."

What's the harm? It turns out that smog can cause bronchitis and asthma. , but also have an impact on children and adolescents, but also cause cardiovascular and cerebrovascular diseases, psychological stress and other diseases.

When I opened the window in the morning, I saw that many cars were constantly emitting exhaust gas. Suddenly, a pungent smell came to the nose, which turned out to be the smell of tail gas emitted by cars. There are factories all around, including ironworks and oil refineries ... they emit a lot of smoke and dust. I also think that during the Chinese New Year, every household is setting off fireworks, and the dust released is all over the sky. These are the causes of smog.

Knowing the causes of smog, I want to tell you: we should drive less, ride more bicycles and plant more trees and grass, which can purify the air; Also protect the forest, don't cut down trees, don't throw garbage, and spit less. This can reduce the increase of smog. In the future, we should protect the environment, nature and every tree that purifies the air for us.

Chapter III: Smoky Days

Today is New Year's Day. In the morning, the weather is terrible. I can only see the gray sky from the window. It's noon, and it's still like there is no dawn outside. On the second day of New Year's Day, it is similar to the first day. I still can't see the sky and the sun, and I can't see the distant scenery and buildings.

After two days of smog, I finally saw the sun that was not very bright on the third day of the New Year's Eve. Although there is still smog, it is much better than the previous two days. At noon, I can see the sun. And windy, although a little cold, but better than smog. In the afternoon, my mother and I went to the square to play. There are so many people in the square. It seems that everyone is bored at home and wants to come out for a walk.

Mom said that smog can make people sick, and it is a very serious disease. Everyone says that wearing masks can prevent smog, but some unprofessional masks are useless at all, even surgical masks in hospitals can't play any role. So everyone should choose the right mask.

Haze has so many disadvantages. Everyone should drive less, set off firecrackers less, plant more trees, care for the environment, reduce the emission of PM2.5 and reduce the chance of haze weather.

Chapter four: terrible smog

I am used to opening the curtains in the morning, and what I see is a vast expanse of darkness.

Curiosity kept drilling into my heart, and I stepped out of the threshold and smelled a pungent smell. Is it fog? No, it will be wet in foggy days. It's not wet at all, is it

I came to school with doubts. At this time, the teacher has arrived at the class. I think this question was put forward by the teacher. The teacher explained to the class, "Classmates, is there fog outside the classroom?" However, this is not fog. It's smog. Haze, haze, also called haze, dust in the air, sulfuric acid, sulfuric acid. Particulate matter such as organic carbon and oxygen compounds can also make the atmosphere turbid, blur the vision and worsen the visibility. If the horizontal visibility is less than 10000 meters, the visual obstacle caused by this non-aqueous aerosol system is called haze or haze, and the Hong Kong Observatory calls it haze. The difference between haze and fog is that the relative humidity is not large when haze occurs, but it is saturated in fog (if there are a large number of condensation nuclei, the relative humidity may not reach 100%, which may lead to saturation). " "I see. No wonder I was white when I came in the morning. " I mumbled.

Alas! Smog! Please go home and rest! Don't loiter in the street!

Chapter 5: Drive away the "smog"

Last winter, we encountered a lot of foggy weather. I hate this kind of weather very much, it's gray and foggy. Every day when I go to school, I not only have to cross the road carefully, but also worry about whether it is safe for my parents to drive to work. Later, I heard from the teacher that people breathing such air is very harmful to their health.

Why is there so much haze? I can't wait to find it online. Facts have proved that too much exhaust gas from cars and factories has caused air pollution. I think I can be an environmental protection scientist when I grow up, invent an air purifier and install it on the chimney of the factory and the exhaust pipe of the car ... so that the exhaust gas can be purified into fresh air and then discharged, so there is no need to worry about such foggy weather! But this ideal needs me to grow up before it can be realized.

What I can do now is to walk to and from school by myself without my parents, but the strength of one person is too small. How to get mom and dad involved? We held a family meeting and suggested that they take the shuttle bus to and from work instead of driving. Mom and dad agree and support my suggestion!

For the sake of our common environment, let me act!