The power of science 1 This morning, I stood at the window and opened it. I saw several birds flying happily in the bright sunshine, and some flew to the clouds. How free they are! I think if only I had a pair of wings!
If I had a pair of wings, I would immediately stand on the windowsill and fly high. I will fly to the field first, and see the farmer's uncle working hard to plant wheat seedlings. Sister Butterfly, Sister Dragonfly and Brother Bee are playing happily among the flowers, collecting honey.
Then, I will fly to the universe to explore the mystery of the moon and see if there is life on the moon. Can I plant flowers and trees, play football and basketball on it?
Then, I flew to the endless sea. In the sea, I carefully observed microorganisms with a magnifying glass, and saw all kinds of small fish, beautiful corals, giant sharks and hunched lobsters.
Finally, I visited the Guanghan Palace of Chang 'e's sister. Wow! Sister Chang 'e in Guanghan Palace is so beautiful that everyone will be elated when they see it. Sister Chang 'e invited me to eat delicious food. Especially the little jade rabbit around Chang 'e's sister, white and lovely, with white fluff, ruby-like eyes, three-lobed mouth, chubby body and long ears. After dinner, the band began to play music, and I was intoxicated by the wonderful piano sound. ...
A gust of wind blew and I woke up suddenly. It was my imagination. I think only scientific knowledge is the real wing. I want to study hard and have the wings of science.
The Power of Science Excellent Composition 2 Now we human beings can't live without the power brought by science. They bring convenience to our lives, make us live a happy life and lead us to the road of civilization.
Ningbo scientific exploration center is located in the cultural square in the center of the new town in the east. Seen from a distance, it looks like a huge observatory. The roof is a white spherical building, like a bright pearl embedded on the roof, which is very dazzling.
Our school organization here is really popular, hehe! Go through the crowded lobby on the first floor and come to the theme exhibition hall on the third floor. Our group first came to the "Human Skills" Museum and showed us how various organs in the human body work. I still remember that man's lung motivation. A transparent plastic human body has two pink organs on its chest, which are human lungs. I pushed the handle next to me up and down, and the lungs entered the working state and began to expand and contract. This is what people do when they breathe.
Then we went to the aquarium and the space museum on the second floor. We used shovels to cause tsunamis and huge waves on specific models, and learned a lot of colorful fish while playing. We also observed the planets with astronomical telescopes, and made simulated skydiving and rocket docking, which was really exciting and of course benefited us a lot.
Last week, my mother invited some friends to our home, and Aunt Zhou's brother Li also came. I am very happy.
As soon as I entered the door, I saw the table tennis racket on the coffee table and couldn't help but fight. I am watching my favorite reality show "Acceleration for All" with relish. Maybe he was bored playing alone and insisted on pestering me to play with him. He is a little guest in our family, and I can't refuse to play with him.
I was afraid to disturb the adults' chat, so I took him to my room to play. Ping-pong Ping-pong shuttled back and forth between the racket and the wall, and we had a good time. Just as we were getting carried away, the ball rolled to the ground, and Li had no time to dodge, only to hear "click!" 1, broke our laughter, and the two of us settled down in situ. He picked up the ball at a loss and held it in his hand. Looking at the deformed table tennis, I am also very sad. Suddenly something occurred to me. I have seen the method of table tennis recovery in extracurricular books before. I went to the kitchen to find a small bowl, poured some boiling water into it, and then put the suppressed table tennis in it. Li and I stared at it intently, but we saw that the flat part of table tennis was getting smaller and smaller. In a short time, the whole table tennis recovered its original appearance. Li danced with joy when he saw this amazing scene, and kept shouting: "Oh! The ball is ready, the ball is ready. " I told him that this is the principle of "expansion with heat and contraction with cold" and added, "You will understand when you grow up."
This also made me understand: the power of science is really powerful!
From the agricultural society to the present "it rains" era, it is science that has created miracles and changed our human life.
I heard that the Science and Technology Museum is holding an exhibition of "Interesting Popular Science Exploration", and my friends and I can't wait to visit it. It's really an eye-opener.
As soon as I entered the Science and Technology Museum, the maglev globe at the door attracted me. It seems to lead us to explore the mysteries of science. Have you ever heard of a fountain controlled by sound? The "Hand Boxing" in the Science and Technology Museum explained the mystery to us. This is a technology that uses sound to control resistance elements. The sound is vibrating, and the sound control element is a material sensitive to vibration. When there is sound, the resistance of the component becomes smaller, and then the circuit and chip control circuit are delayed, so the water pump works as soon as there is sound, and water is sprayed out.
The robot lab on the second floor dazzled me even more. My long-awaited robot stood in front of my eyes. "Hi, welcome." It greets us. There is also a robot sitting on the piano, and euphemistic music flows out from your fingers, which is wonderful. The sound is like the echo of the mountain and the reminder of the stream. As soon as I turned around, oh, it was another robot. The blue metal skin sparkles under the reflection of sunlight, just like an armored soldier. I think: with the continuous progress of science and technology, in the near future, robots will definitely enter thousands of households and become good helpers in our lives.
After visiting the Science and Technology Museum, I looked at the modern city, rows of high-rise buildings, busy streets and a bustling scene. All this shows the charm of science, and modern science and technology are closely related to our lives. But behind these numerous scientific achievements, how many scientists have sacrificed their blood and sweat and even their precious lives. Madame Curie devoted herself to science because of her long-term study of highly radioactive substances. "Perseverance, dead wood cannot be carved; Perseverance can carve a stone. " Edison began to study electric light in his twenties, and it was not until 1879 that his carbonized cotton filament incandescent lamp was born, and the tungsten filament incandescent lamp we use now was invented in Coolidge only 29 years later. How difficult and tortuous the road of science is, and how magical and great the power of science is.
As a new generation of the motherland, we should strive to learn scientific and cultural knowledge well and contribute to the scientific and technological cause of the motherland when we grow up.
The power of science 5 science is the ladder of human progress; Science is the bane of Buddhism; Science is the only way to the future; Science is like a lighter, which ignites our hopes.
I remember one thing. When I was a child, I was ignorant and followed the old man to believe in Buddhism. Every morning, after my grandfather lit incense, I found a cloth mat, knelt on it, worshipped the Buddha and said, "Heaven and earth are in spirits, and all gods will keep me alive for a hundred years." Gollum laughed because of my simplicity and cuteness. Gradually, I saw those old people who looked like me, all of them died of aging quickly, and my trust in Bodhisattva was shaken.
A few days ago, I heard from my classmates that someone outside had AIDS, so it's not too late to see a doctor. But the old man refused to spend money, saying that he only needed a bodhisattva. Later, my family was infected with AIDS, and a kind-hearted person helped them. They no longer believe in Buddhism, so my trust in Buddhism has been reduced by more than half.
I don't believe in Buddhism today, because this kind of thing is mentioned on the news again. I don't believe in Buddhism anymore.
From now on, believe in science, completely disappear the thoughts of ignorant people, believe in science, start from me, start from now, start from small things, let's stay away from Buddhism and embrace science!
The Power of Science Excellent Composition 6 Human beings have existed in this world for a short time, but they have created the most brilliant world. It all depends on science. Science, like the air we live in, cannot be separated from it.
From the very beginning, human beings learned to use tools, gradually learned to farm, to four great inventions of ancient china, and then human science and technology became more and more developed. It was not until the first scientific and technological revolution that humans entered age of steam. They learned to spin by machine and invented the train. In the second scientific and technological revolution, mankind entered the electrical age. The electric light invented by Edison lit up the world, so there was no darkness in the world. The invention of radio made communication not far away for a long time. In the third scientific and technological revolution, the greatest invention at that time-computer appeared. Its appearance makes science and technology begin to advance by leaps and bounds and make accurate calculations in the scientific field. Later, the diode became a silicon chip, making the computer hardware weighing several tons the size of a thumb nail cover. In the last 30 years, the extensive use of the Internet has turned the earth into a global village, and the information exchange has changed from a few months in ancient times to just a few seconds, which has realized the rapid exchange of information around the world and led to the accelerated progress of science and technology.
It is not difficult to see from the above that the development of science and technology has brought great changes to our lives. However, ordinary us still have a long way to go if we want to have our own peak on the mountain of science and technology. Therefore, to truly love and apply science, I think we need to do the following:
First of all, be practical. It is difficult to achieve great things just by talking and not doing, so we should do a solid job of ourselves and climb up step by step, just like our student generation, we need to learn more knowledge and lay the most solid foundation for future study.
Secondly, we need interest. Some people say, "Interest is the best teacher." Almost everyone of us has hobbies and interests. With hobbies and interests, you have the motivation to continue to walk towards your dreams.
Then, we need innovative spirit. In this era, what we lack most is the spirit of innovation, the lack of new ideas, and just imitation, then science and technology will not progress and human life will not develop. Therefore, the spirit of innovation is the necessary nutrition for scientific and technological progress.
Third, we need to dare to imagine. Many great inventions in history are based on imagination that seems impossible to realize. For a well-known example, the mobile phone started with key operation, and later Apple founder Steve? ; Jobs thought that users could get closer to the device, so he began to try the touch screen, which sounded impossible at the time. However, Jobs and his team created a product that changed the world: the iPhone.
Finally, we need to be good at thinking and discovering. Scientific and technological progress is not empty talk, it needs to be implemented in all aspects of human life, bit by bit. We don't have to make great inventions and discoveries. We should start with the little things in life and be good at thinking about how to make life better. Therefore, we should have a unique vision and have a unique view and cognition of things.
I believe that if we can have the above qualities, we will be able to love and use science. The development of human civilization is inseparable from the development of science and technology. I hope that human beings can live in the air of science forever!
The Power of Science Excellent Composition 7 Sunlight shines bright and warm sunshine, and the extremely hot temperature makes us sweat. "ah! Ah! Ah ah ah! The crested lark ... "Sweet songs came from the spacious playground on campus. Oh! It turns out that the annual "Mobile Youth Palace, Technology Caravan" has entered our campus.
On the playground, there are so many people that they are basically packed, leaving no gap. On the performance stage, two dance teachers gracefully danced Xinjiang dance, and the red skirt swayed enchanting in the breeze. I thought it was the goddess. The funny and lovely fat uncle who plays the trumpet danced "Little Apple" to the accompaniment of the new number. Two Latin dance teachers danced generously and excitedly; The teacher who plays the erhu is completely immersed in the beautiful singing, so intoxicated that he shakes his head and wags his tail with the singing; Teacher Qiao's scientific experiment of "Fire-breathing Dragon" and "Elephant Toothpaste" also made the audience scream and cheer. ...
"wow! Look! Look, fly-fly-plane! " The students on the side were too excited to speak. I looked in the direction of her finger, but I couldn't deny it, but I saw three model planes flying freely in the blue sky: No.1, No.2 and No.3. They spread their wings like eagles, flying in the vast sky, touching the soft clouds and chasing them briskly with a flock of birds. Look! No.1 machine showed everyone its unique skills. It made a 360-degree turn and ran vertically to Xiao Yun, which surprised all the audience and caught their attention. When plane 2 took off and landed, it also rolled in mid-air, as if to show off to everyone: students! Anyway, because I'm good. No.3 machine followed closely. In order to better attract everyone's attention, it flew parallel planes at low altitude for a while, and made a final sprint at high altitude for a while ... The unmanned plane appeared, and its four aircraft propellers, like goshawks, incited its wings to roll over a hurricane. The plane rotates in mid-air like a blessed land, allowing us to enjoy the visual effect.
Next, everyone made a scientific research visit and washed the car. Time also slipped away in everyone's hands-on ability. April 1 1 is a happy day and an unforgettable day. Colleges and universities let us once again enjoy a grand event in visual effects and auditory system. The extreme integration of science and art makes everyone suddenly enlightened and amazed, which shows the energy of science and art. Let us understand that we should cherish the happy learning and training opportunities now, study hard and give ourselves ideals and diligence.
The Power of Science Excellent Composition 8 Today, my father bought me a mobile phone, and I started playing with it when I got home. The mobile phone can be called PDA. At night, I had a beautiful dream with my mobile phone:
I came to the street with my beloved time machine. Suddenly, a man dressed in British clothes appeared in front of me. I was shocked! On closer inspection, it turned out to be Edison, a great scientist who invented the electric light bulb for us. I told him that this is 2 1 century. The light bulb he invented has been put into human life and has been widely used. After listening to this, his eyes were straight.
I took him to China Telecom again. He saw the mobile phone in the glass showcase and kept groping. I heard from the clerk that this man is really "the old country man's first time in town." I think so. I think Edison saw this mobile phone, but he thought it was a new thing. Edison didn't understand why companies that buy product patents thousands of miles away can hear voices from remote towns and villages instantly.
In order to understand the principle of this invention, Edison visited scientists and engineers in some scientific research institutions. Every interviewee knows his name and respects him. "We all came out on your shoulders!" They all expressed modesty and asked him to sign a photo. "Good for mankind, good, good ..." Edison stroked his long beard. "After I left, it seems that human beings have not stopped thinking and creating for a day ..."
In the 2 1 century, there have been many new changes, such as repairing gloves, which are devices with special actuators and sensors implanted, which can imitate the biomechanics of human hands. The purpose of designing "repair gloves" in the manipulator research laboratory is to make a "coat" with artificial muscles. This "coat" can help the human body to move again. Scientists, programmers and inventors all over the world are developing innovative technologies to copy, replace or help the human body. There is also neural transformation, and an Australian programmer developed a system. According to this system, people with amyotrophic lateral sclerosis can communicate with others only through the tips of neural signals in the future. Another scientist has developed a new man-machine interface: a person can receive neural signals by using electrodes on the skin surface, and then communicate with them through artificial intelligence analysis. After the cooperation of two scientists, this system is called neural transformation technology.
The power of science is really great. I also want to study hard, realize my dream of being a scientist as soon as possible, and benefit mankind like Edison.
In America, you can often see colorful hot air balloons flying in the sky. Most hot air balloons carry a "basket" so that we can ride it into the sky.
But why can a hot air balloon rise into the sky with nothing? What power entrusted it to heaven?
In fact, the principle is very simple, because the hot air inside the hot air balloon is lighter than the cold air outside, but if it is a little more, it is because the hot air balloon is filled with helium gas lighter than the air, so the hot air balloon can rise, and the gas molecules can move in all directions at a very fast speed, so the gas can't keep a fixed shape like a solid, but spread in all directions to fill the space of any shape. During the heating process, the gas molecules in the hot air balloon diffuse with the increase of temperature, so the gas molecules on the average area are less and less, and the hot air balloon begins to float.
In this case, we can also simulate it at home. Buy a balloon at the stall, a balloon with a rope. This kind of balloon is much lighter than the flightless balloon, but there is just a force to hold it up, which shows that it has a certain weight. When I let go of my hand, the balloon will go straight up, but when a gust of wind blows, the balloon will deviate from its direction.
On the other hand, the parachute descends. In case of a crisis on the plane, almost all people use this. Parachute is semicircular, which can use air resistance to slow down the landing speed. After the parachute is deployed, the wide umbrella surface is much larger than the air resistance of a single human body, so it can slow down the landing speed of the human body.
The power of science is really great.
The power of science 10 Science is not only a branch of the knowledge system that reflects the objective laws of nature and society, but also a powerful force for the development of the country and mankind.
I heard the teacher say the word "science" when I was a child. I didn't understand its meaning at that time. All I know is that I can't suck my fingers because I have bugs in my hands. You have to take an injection and take medicine when you eat. When I entered primary school, I met some great scientists, such as Galileo, Einstein and Qian Xuesen ... At that time, I had a reverence for scientists and a desire to study science. Now, I am a seventh-grade student. I am on the great ship Discovery, sailing in the ocean of scientific knowledge: from creatures, animals to plants, from the solar system, the Milky Way to the boundless universe, we find the truth through study, experiment and observation.
Open the thick history and see a series of horrible historical fragments, and my thoughts are brought to the dark old China-
More than a hundred years ago, foreign powers used gunpowder invented by our ancestors to make foreign guns and guns, killing countless Chinese children; More than 70 years ago, Japanese imperialism ravaged the land of Jiuzhou and wantonly pursued the "Three Lights" policy, killing many people in China. ...
Looking back on the history of blood and tears, let us always remember that the country should be strong, science and technology should develop, and backwardness should be beaten.
Look! After the founding of New China, the country became increasingly prosperous, science and technology developed gradually, and China was taking off. From China's restoration of the legal status of the United Nations to China's accession to the World Trade Organization, from China's successful development of "two bombs and one satellite" to the successful realization of manned space flight, these marks China's great achievements in politics, economy and military affairs, and are brilliant achievements of China people's unremitting self-improvement and scientific and technological development. China has really risen! Chinese people are proud of this.
Science benefits mankind and science benefits the future. As the successors of the motherland's construction, the future of science lies with us, and we have a long way to go. We suck the South Lake water, remember the teacher's inculcation, explore knowledge under the cold window and study hard. "Let's stand on the shoulders of scientific giants, uncover more scientific mysteries and create more brilliant scientific and technological civilization!"
The Power of Science Excellent Composition 1 1 Since I was a child, I have loved to fantasize about why birds can fly in the sky and humans can't. By chance, when I was cleaning in the library, I accidentally knocked over a book, which was 100,000 Why. I saw an article "Why can birds fly in the sky" in the catalogue, so I found the answer to this question according to its page.
It turns out that birds can fly in the sky because their bodies are like spindles and their heads are small, so flying can reduce air resistance. The middle of the bird's skull is empty and its body is very light. The wings of this bird are much bigger than its body. It keeps flapping up and down, stirring up the surrounding air, and the body can fly briskly.
After reading this question, I want to move on to other questions. However, it occurred to me that before I finished cleaning, I mopped the floor and borrowed this book.
I finished reading this book in the next few days. My brain has added a lot of new knowledge, which has made me understand many problems that I didn't know before. I think science is very interesting. As long as you use your brain to discover and understand, you will know many interesting things.