Comments on the Open Science Course "Exploring Earth Science in the Evolution of the Earth" (10)

Reflections on the Open Science Course "Exploring Earth Science in the Evolution of the Earth" (Selected 10)

The earth is our common home, so how do you write your own thoughts in the open class of "Exploring the Science in the Evolution of the Earth"? The following are my thoughts on the open science course Exploring the Evolution of the Earth (10) for your reference. Welcome to collect and share!

Reflections on the Open Science Course Exploring the Evolution of the Earth (1) I have a habit of observing the weather and watching the weather forecast every day.

I watch the weather forecast every day and get some news: There are sandstorms in northern China, and the more frequent they blow, I estimate that in the future, China will probably be a desert!

Father said: the desert is afraid of water, and it is easy for water resources to have life. However, some parts of the motherland are short of water and there are fewer rivers. I have an idea: I heard that foreign countries desalinate seawater and then reuse it. We can also learn from it, bathing and washing clothes with desalinated seawater and drinking with river water to save every drop of water.

I also heard that afforestation can also prevent China from becoming a desert. Therefore, from now on, each of us should take good care of flowers and trees, advocate a variety of trees, and don't cut them down indiscriminately.

The weather has become warmer in recent days, and it hasn't snowed for a long time in winter in many areas. According to my family, it is a warm winter, which is caused by people destroying the environment. I read an article saying: beside a beautiful pond, swallows live under trees and eaves beside the pond every year to raise their offspring. One spring, the swallows flew back. They found the old pond, but they couldn't find a place to live. There is a new factory here. These factories discharge sewage into the pond every day, and all the fish in the pond die. The exhaust gas is discharged into the sky, and the blue sky and white clouds in the sky are gone, and the pungent smell can be smelled everywhere. Therefore, I think that there may be a chemical reaction between waste gas and gas in the air. Another possibility is that sometimes wars abroad will produce some chemical gases, which will pollute the air and may be scattered around with the wind, polluting the air; Other countries will develop toxic weapons that pollute the earth. The earth is polluted, and human beings are also harmed by viruses!

Can't we just stop arguing? Can't we not destroy the environment? Can't there be life in the world? If you can, then protect the earth from now on; Otherwise, mankind will perish! So, let's protect the earth together, shall we?

Reflections on the Open Course of Science "Exploring the Science in the Evolution of the Earth" (II) On a barren land, a dying polar bear limped slowly and climbed to a trash can, rummaging for the only hope of life left in the trash can. Turning the camera to another corner of the world, a group of shirtless children are wandering in the ocean of garbage, but their faces are still smiling brightly, which can't help but remind me: why did the originally strong polar bear fall into such a miserable situation? Why is the originally clean ocean full of rubbish?

The quality of human life is getting higher and higher, and people's material desires are also improving, in order to covet convenience and pursue comfort. Enterprises that only covet immediate interests are deforestation; In order to save the cost of cleaning up sewage, unscrupulous businessmen directly discharge sewage into rivers and enter the sea with the water flow. In order to satisfy the taste buds of the public, a large number of cows are raised on the farm, but it is unexpected that methane and other gases emitted by cows will cause serious global warming. It is convenient for mass production of plastic bag products. This kind of non-decomposable garbage is either discarded in landfill or discarded by people. When the waves washed ashore, some garbage lay quietly on the shore, destroying the cleanliness of the coast; Others drift into the sea, drifting with ocean currents, causing ecological catastrophe. The straw is inserted into the turtle's nostrils, and the fishing net is wrapped around the seal's neck ... The earth is sick, warm and polluted.

Seeing this deteriorating phenomenon, for the sake of our little planet, can each of us make more efforts and pursue less convenience? In daily life, you can try "low-carbon life", use bicycles or walk instead of cars for short distances, and try to take public transportation for long distances; Eating less meat and more vegetables is also a way to reduce carbon emissions. In addition, it is also a way to reduce the use of plastic products to bring environmental protection chopsticks and bags when going out. The chief culprit of global warming and environmental pollution is human beings. We must face the reality and change from ourselves.

Global warming and environmental pollution are problems that cannot be ignored today. If the work of saving the earth is delayed any longer, life will gradually become extinct, and mankind will have to move to other planets. As long as we can make a little effort to turn our thoughts into actions, we can restore the original beautiful face of the earth, with green mountains and green waters.

Comments on the open science course "Exploring Earth Science in the Evolution of the Earth" (Chapter III). This ball is the mother of mankind-the earth. They say I am beautiful; Amiable, is that true? I can say no to you with great certainty. The following is a good friend's evaluation of me. I am the neighbor of the earth on the first moon. My name is the moon. Although my area is smaller than the earth, my body is great. No heart disease, cardiovascular and cerebrovascular diseases. Dr. Sun said, look at the earth every day. Her illness was caused by human hacking. I am the earth's security guard on Mars. She has not only heart disease, but also respiratory diseases. Accompany her to see a doctor and buy her medicine every day. She is in the terminal stage of lung cancer. Dr. Sun said that her illness was caused by smoke from human factories.

I am the sister of the earth-Mercury. My sister is in poor health recently. I take care of her every day. I don't know. I'm her nanny and I don't have time to go shopping. Being with my sister every day has caused me to be infected now. Dr. Sun said that she had chronic pharyngitis, that is, lack of water. I am the personal doctor of the earth, and I can definitely tell you the diseases of the earth, such as heart disease, lung cancer, chronic pharyngitis, swine flu, SARS and so on. She's in pieces. The earth is beautiful, but her body and spirit are not as good as before. Please protect the earth for its sake.

Comments on the open science course "Exploring Earth Science in the Evolution of the Earth" (Chapter 4) It turns out that he became a member of the "tortoise and rabbit race". Besides, the second sports meeting in the forest is about to begin. Rabbit and rabbit signed up for the running race again. Before the competition, the tortoise proudly said to the rabbit, "Rabbit, remember to sleep well this time!" " I invented another treadmill. As soon as the referee fired, I ran away without a trace. No matter how you chase me, you can't catch me, hahaha! "The rabbit kept muttering: Is this really the case? However, anyway, I must win this time!

The race has begun. The referee raised the starting gun and shouted, "Ready-"and "Bang". As soon as the gun rang, the tortoise ran out and disappeared for a while. The rabbit didn't lose heart and kept running.

The tortoise ran a long way in one breath and felt a little tired. It stopped and looked back, vaguely seeing the rabbit jumping. "This rabbit runs so slowly! Why don't I take a break first? It can't catch up with me. " So the tortoise lay on the grass and stopped running. Who knows, as soon as I stopped, I straightened my eyelids. After a while, my two eyelids stopped fighting and got together affectionately. ...

After a while, the tortoise opened his eyes and ran to the finish line. When it reached the finish line, it found the rabbit already waiting for it here. The tortoise hung his head in shame. The rabbit jumped over and patted the turtle's hard shell and said, "We won't do that again, okay?" Let's do it right! "The tortoise nodded happily and agreed.

The alien went back after the experiment.

Reflections on the open science course "Exploring Science in the Evolution of the Earth" (Chapter 5) The Earth is a crystal ball and our beautiful home. She is the cradle of life and the mother of mankind. I live in Shaoxing, an ancient city full of culture and countless cultures. The blue sky and white clouds were originally the main color of the blue sky in this ancient city. However, if the environment is destroyed, the sky will be gray and it will be difficult to breathe fresh air.

When I walked to the roadside with flowers in full bloom and green grass, I smelled a stench; When I passed a small river, I witnessed Aunt Yi Dao pouring a basin of dirty water into the river ... The beautiful environment left me, and in front of me were disgusting pictures that destroyed the environment.

People pay less and less attention to the change of ecological environment. The earth is our mother, and we only have one earth and one mother. We can't destroy the environment at will, destroying the earth will only make us lose our beautiful home.

Our home has been seriously damaged, and the feelings are no longer green, the flowers are no longer bright, the river is no longer clear, the clouds are no longer white, and the sky is no longer blue. The beautiful face of the city, destroyed by us, became dirty and smelly. The reason why the city has become like this is because of people's destruction: littering, spitting and abusing chemicals. ...

All this was originally done by human beings, but we still complain about others. When we walk through the river, we can't help but hold our noses and complain that the river stinks; When we pass a lawn, we will also hold our noses and complain that the lawn is too dirty and smelly. But who would have thought that this is the result of human beings!

The earth and human beings are connected, and she will treat you as you treat her. Let's appeal: protect the earth's environment and build a beautiful home!

Reflections on the Open Course of Science "Exploring Science in the Evolution of the Earth" (Chapter 6) In the vast universe, the earth is tiny, and we live on this tiny sphere. The survival resources needed by human beings depend on the continuous supply.

In the past, the earth came into view as a crystal ball with alternating blue and white lines, surrounded by a thin layer of water-blue "tulle".

However, in today's society, the natural environment is destroyed and people abuse trees recklessly, which makes the environment extremely bad and poses a serious threat to human life. For example, in recent years, sandstorms, sand blowing and other weather are directly related to the damage that is considered, which has brought great inconvenience to people's lives.

What can we do for the earth and ourselves? People often say that "forest is the regulator of climate", and it is also the guardian of the earth. With a large number of forests, soil and water will not be lost and the air will become fresh and natural. If there are no trees and flowers, the green space on the earth will gradually become a desert area, which has caused great obstacles to the development of agriculture. When the wind blows and dust flies everywhere, human beings will face the threat of hunger, which will greatly affect people's lives and work. Yes, but:

On land, there are many forests because humans cut down at will. The land is getting less and less, and gradually becomes a desert. It often causes sandstorms and tornadoes.

At present, 23% of cultivated land is seriously degraded; 50% of rivers are reduced or seriously polluted; 25% of mammals and 12% of birds are endangered; 1/4 human diseases are related to environmental degradation; 1/3 The land is facing desertification; Eighty countries are seriously short of water, and 654.38 billion people are threatened by desertification.

We only have one earth and we have nowhere to go. We should protect the earth and the environment on it. We should plant trees and grass to protect vegetation. Only in this way can our mother, the cradle of life, become more beautiful.

Reflections on the Open Science Course "Exploring Earth Science in the Evolution of the Earth" (Chapter 7) The weather is much hotter than before, and the earth is "burning". I don't feel the smell of "hot" A plastic garbage bag floated down from the air. A man came over, picked it up and put it in the trash can, and the air immediately became fresh.

Some people throw rubbish at will. If no one cleans it up in time, the earth will become a garbage transfer station. The earth is a beautiful planet, but it has been trampled by some uncivilized people, leaving haze everywhere and never seeing her original beautiful face again. Many people are explaining in different ways that if the earth is trampled endlessly, it will be destroyed. The forest disappears day by day, the birds move away day by day, the water source is getting less and less, the Arctic is burning, the sea level is rising, the earth is in crisis, and mankind is facing disaster. Humans have almost lost the foundation of survival, and their only hope is to rely on themselves. If we don't protect the environment, one third of the earth will become a desert full of yellow sand.

I remember one time, I was playing outside. Suddenly, something black fell from the sky, and soon, the ground was covered with black. I looked at it carefully. It turned out that there was a factory producing things, and this particle was the residue of those things, and the factory smoked again. Doing so harms others and yourself and destroys the surrounding environment. We should protect the earth on which we live, so that it will no longer be polluted.

To protect the environment, each of us should start from our side, pick up a piece of waste paper, turn off the tap and don't litter. These are fundamental measures to protect the environment. There is an old man in the community where my family lives. Every day, he will pick up the plastic bags littered by others in the community and put them in a special trash can. Think about the littering behavior of some people around us. This is a different world!

The earth is burning. As the children of Mother Earth, we should not let Mother Earth suffer such pollution again. We should start from ourselves and protect the environment together to make our mother earth's tomorrow better!

Comments on the Open Course "Exploring Earth Science in the Evolution of the Earth" (Chapter 8) One night, after I finished my homework, I was previewing Lesson 9: There is only one earth, and I started reading with love and gratitude for Mother Earth.

The text "There is only one earth" begins by introducing that the earth is a blue planet. It is the mother of human beings and the cradle of life. However, this great mother, this cradle, has almost no place where human beings can live and move: the surface area of the earth is 5 1 100 million square kilometers, and the land inhabited by human beings only accounts for about one fifth of it. It can be seen how small our activities are! I continued reading, from which I learned that the natural resources of the earth are limited. For example: water resources, forest resources, biological resources, atmospheric resources, mineral resources ... these resources are very limited. Some natural resources are few, and they are all formed through geological changes for hundreds, thousands or even hundreds of millions of years. Therefore, human beings must be temperate in mining, so as not to accelerate the depletion of resources. However, some resources could have been regenerated continuously, because people's random destruction and abuse of chemicals have brought serious threats to human beings and our own paradise.

I think: the earth has selflessly provided all kinds of natural resources for human beings, but what about people? Not only did it not give the earth any return, but it also destroyed its home. What a mistake! I continued to look down, and then I saw that scientists have proved that there is no second planet suitable for human habitation within 400,000 kilometers around the earth. I know the importance of protecting the earth. We should protect our ecological environment and make the earth our friend and our eternal paradise, so that it can better benefit our future generations.

Residents of the open science course "Exploring the Evolution of the Earth" (Chapter 9), when you see the oil-green lawn trampled, the clear stream becomes turbid, the fresh air is polluted, and the white walls are smeared. What would you think?

Today I want to say to you seriously: "We only have one earth!" " "

I'm not exaggerating. It happened around us. Take the residential building near my home for example. It's obviously a residential building, and it also does some small business. For example, barbershops and grocery stores, I don't object, because we will have a rest when we arrive. But in those small restaurants, karaoke bars and Internet cafes, music starts at night, and it is "drumming".

The sound is that people can't sleep well

I once heard a story: Russian scientists decided to let some earthlings immigrate to the moon. One day, a spaceship landed with four aliens in it. One of the aliens turned into a tree. This is because an old man came and patted the tree. The tree screamed in pain and shook all the leaves. After the old man left,

A young man came. He raised his knife, ready to cut it down. The alien turned around quickly and said to the alien in the spaceship out of breath, "No, people on earth can never go to our planet." They are so cruel! " When people heard the news, they hurried to protect the environment, but it was too late.

Take both sides of Yongshan Road as an example. After eating the fruit, the vegetable seller threw it on the road, the garbage truck was there, and the fish seller poured the smelly water on the road. Many people who came from the stone road covered their noses to speed up their steps and tried to get there quickly.

Please protect the environment and make the earth better!

Reflections on the Open Science Course "Exploring the Science in the Evolution of the Earth" (Chapter 10) I don't know when this river began to become no longer clear. When smelling, gases such as fishy smell and fishy smell are very close to the nostrils; The sky is no longer clear, lifeless and gloomy, watching our every move with a straight face; White garbage is scattered everywhere unscrupulously. ......

What caused all this?

This is an act of human destruction of the environment. Humans invented plastic bags, but they could not resist the pollution of white garbage; Man invented the car, but he couldn't stop the harm of exhaust gas; People cut down trees to sell money, but they don't know that it destroys vegetation and threatens human survival ... all these show that people are short-sighted and short-sighted creatures. 1 people are stupid enough to only care about immediate interests.

Humans, we hurt innocent animals and plants and destroy the ecological environment, but we are arrogant at 1. Is it outrageous, outrageous and pathetic?

Now, nature has had enough, and it wants to punish human beings. For the sake of the earth, and for the sake of human beings, people and ignorant creatures on the earth, 1, come out of the quagmire of destroying the environment and repent.

According to the data, global warming, ozone depletion, biodiversity reduction, forest reduction, acid rain spread, land desertification ... In life, birds no longer fly and sing, forests are no longer lush, and the sky is no longer blue and clear ... These are all serious warnings to the destruction of human environment and a serious threat to human survival.

Some people realize that they have begun to compensate for their mistakes, using energy-saving lamps, using baskets or cloth bags, using bicycles or walking ... refusing energy-consuming lamps, refusing white garbage and refusing exhaust pollution ... I hope these actions can educate and help those who are stubborn, compensate the resources wasted by us, make the earth more willing to serve us and make human life truly better.