Essay on Seeing the World with a Drop of Water, Essay on World Water Day A drop of water, a tear

It's fun! I happened to do this experiment to my brother, and the rest of him always looked down on me (he scored better than me on exams, and he was in the third grade). I prepare a glass and a rectangular piece of white paper.

When everything was ready, I shouted, "Little brother! Come out for me!

Your sister, I'll give you a little magic! This shout was really useful, and my brother rushed to hear the wind and asked me excitedly what kind of magic trick it was. I deliberately sold a pass:

You know it when you look at it. "I filled the cup with water, then gently spread the white paper over the rim of the cup and held the paper with my hand to keep it from falling. I asked mysteriously

You say, what if I turned the cup upside down and took my hand away? "Nonsense, of course it's water leaking. Who doesn't know such a simple question!

Immature! The younger brother said without thinking. Juvenile ......Immature!

Your sister and I finally found time to play with you, and you still call me naïve! And is there a conscience?! I forcibly suppressed the anger in my heart and said with a sneer

Look carefully and never blink. Now is the time to witness the miracle. I turned the cup upside down and slowly moved my hand away.

I saw that not a drop of water in the cup leaked out. "How is that possible?! The younger brother's eyes widened, "Sister, did you do anything on the cup or paper?!"

If you don't believe me, you can try it. But let me warn you first, don't use half a glass of water. But my brother didn't listen to my advice and performed with half a glass of water.

He did it step by step the way I did, and to make it harder, he placed the cup above his head. As soon as he removed his hand, he immediately sprinkled his whole body. I couldn't laugh or cry, so I quickly brought a towel and dried him off while explaining the mystery to him.

Actually, it's the atmospheric pressure that really doesn't let the water flow out. When the cup is filled with water, the atmospheric pressure outside the cup is greater than the atmospheric pressure inside the cup, and the water naturally does not flow out. When half a glass of water is used, half of the cup is filled with air, and atmospheric pressure does not work, and the water leaks out.

The younger brother nodded in realization. From this, I also know that atmospheric pressure is very closely related to our lives, such as using a straw to suck drinks, etc., atmospheric pressure is inseparable from our lives.

The Yellow River and the Yangtze River ......The "Mother River" has a very long history, and they have all nurtured the sons and daughters of China. They are not only the hope of our survival and the driving force for progress, but also the source of our life.

In the past, they were very majestic and magnificent, and were highly praised by the sons and daughters of China and foreigners. But with the increase in population, overgrazing, deforestation, and so on, they have changed. Their bodies gradually withered, their milk gradually dried up, and their faces gradually became haggard.

Especially the Yellow River, which transports 1.6 billion tonnes of sediment per year in the lower reaches of the Yellow River.

Due to the destruction of the environment, the vegetation situation in our country can be described as miserable. The soil was loose and washed into the Yellow River, which had lost its original'Lingxiu is clear and has become a veritable "yellow" river. The catastrophe brought by the Yellow River is even more tragic.

However, human beings are still thoughtful and rational, and people began to replant trees near the Yellow River, although it is not as good as before, but it has also played a certain role. When the Yellow River flooded, there was no need to panic, people built channels to bring the water of the Yellow River into the farmland, irrigated the farmland, and alleviated the irrigation water of many farmland in the arid areas of the north.

Not only that, but people have begun to realize the importance of water resources in their daily lives. We have started to save water in our lives, and we can't finish mentioning many, many excellent examples, and we are glad that people have woken up. A drop of water, a tear, water is the source of life, in order for people to survive better, we must first cherish water resources.

Looking at yesterday, today and tomorrow, we have come to realize that while the inexhaustible resources of rivers can bring us infinite wealth, they also bring ruthless disasters. Water is a necessary condition for people's survival, so people have a greater responsibility to cherish and protect it. Seeing the improvement of the Yellow River's water, I firmly believe that if we continue like this, even if we cannot change back to the original state, we can continue to make human beings survive better.

A drop of water, a tear, this is something we must all remember.