Scientific knowledge composition 1. The composition about scientific knowledge is 400 words.
Is the development of science and technology beneficial or harmful? Without a doubt, of course it is Lida! What is the explanation? No need to explain! China's 8,000-year history of civilization is irrefutable evidence. History has been changing and technology has been developing.
Humans learn to use or cook food from primitive life, from relying on nature to thriving, from unarmed to metallurgical smelting. This is not progress, this is not development? If the disadvantages outweigh the advantages, then why do human beings choose progress in unison? Because only progress can make tomorrow better! It is sad for a person not to make progress, a country is declining without progress, and a world is dark without progress. Only by continuous progress can human life be sublimated.
God has given mankind a clever brain and a pair of hardworking hands. It is precisely because human beings choose to make continuous progress instead of enjoying success that they can stand at the top of today's food chain. Life is so comfortable, life is so comfortable, life is so wonderful. I e5a 48 de 588 b67a 686964 16f 3 13333336463。 Our average life expectancy is 30 years longer than that in ancient times, and we don't even have to go out to visit relatives and friends. Isn't this all the benefits of scientific development? Therefore, science and technology change history, and we don't need to question whether the development of science and technology is beneficial or harmful, it is beneficial! Rita! Rita! You said that the development of science and technology brought air pollution, you said that the development of science and technology produced white garbage, and you said that the development of science and technology caused the warming of the temperature ... Everything can't be perfect, so you can conclude that the development of science and technology does more harm than good? Different times lead to different problems. Except air pollution, all provinces and cities have put forward prevention plans. White garbage, unified treatment; Automobile exhaust causes the temperature to warm, and scientists have also developed solar-powered cars.
Look at now, solar water heaters, solar air conditioners, solar cells ... environmental protection and energy-saving solar energy are gradually entering thousands of households. Isn't this the development of science and technology? Although there are disadvantages, it is irrelevant compared with the scientific and technological development concept of benefiting mankind and protecting home. As long as there are drawbacks, scientists will try to solve them. We can't stop eating because of choking, and the pace of scientific and technological development will not stop for a moment. There is nothing wrong with the development of science and technology, which is profitable! Just because science and technology have been advancing and science has been developing, cunning sophistry, generalization and unreasonable entanglement can't change this truth.
It is true that technology has changed history. Without the development of science and technology, our life is unimaginable. Our days are dark. It was the development of science and technology that saved us, and it was science that saved us from the age of hydrothermal. We should respect him with awe. How can we say that the development of science and technology is full of drawbacks? Science and technology change history, and knowledge changes destiny.
We have entered the 2 1 century, an era full of high technology. Science has changed our lives, and science has changed our destiny.
"Knowledge is power". Why do we, the people of China, a vast country with a population of 65.438+0.3 billion, stand tall in front of the world? Because our technology is constantly developing! Our technology is constantly improving! The advantages of scientific and technological development outweigh the disadvantages, which is an eternal theme! With the development of science and technology, human civilization has taken a big step forward, from the previous carriage to the car, from the previous oil lamp to the electric light.
2. Writing of scientific papers
In the vast world, there are many problems and mysteries hidden, some of which are common and some are very strange.
I have met some strange things. I remember that day my mother bought a pot of flowers called mimosa from the flower and bird market. I saw that its branches are very thin. From a distance, the leaves are connected, but they are actually made up of many smaller leaves.
Looking at its playful appearance, I couldn't help reaching out and touching it. Who knows that as soon as I touched it, its leaves closed tightly and slowly opened after a while. This is really fun! Playing, I can't help wondering, why does it have this reaction? So I looked up the information about mimosa on the Internet.
It turns out that there is an enlarged organ called "leaf pillow" at the base of its petiole. There are many parenchyma cells in the leaf pillow, which is very sensitive to the outside world. Once it touches the leaf, * * * will immediately spread to the occipital, at this time, the cytosol in parenchyma cells begins to flow to the intercellular space, which reduces the expansion ability of cells, reduces the intercellular pressure at the lower part of the occipital, and leads to the phenomenon of leaf closure and petiole drooping.
1-2 minutes later, the cell fluid gradually flows back to the leaf pillow, so the leaves return to their original appearance. The above phenomenon of Mimosa leaves is a physiological phenomenon, and it is also the result of Mimosa adapting to the external environment for a long time in the process of system development.
Because the mimosa originated in the tropical region, where there are many storms, when the storm blows the leaflets, it immediately closes the leaves to protect them from the storm, thus gradually forming this physiological phenomenon. Searching the information of mimosa has also increased a lot of knowledge. There are so many magical places in a piece of grass. I wonder how many things in the world are still waiting for us to discover. This must be the mystery of nature.
3. Write a composition about scientific knowledge
Knowledge is power. Knowledge is power-inscription Knowledge is the source of all power and the capital for literati to express lofty aspirations. It is the source of strength for the country's prosperity and scientific development; It is the cornerstone of people's independence from the world cultural forest.
Because knowledge is power. "Jiangshan has talented people, and they have been leading the way for hundreds of years."
It is the literati's desire for knowledge, the literati's desire to display their talents, and the desire of those who achieve great ambitions. Preface to Wang Tengting made Wang Bo famous and expressed his depressed mood.
After studying hard for ten years, he succeeded only once. Now is the moment when his ambition can be expressed. However, it is deeply regrettable that he was ill-fated and died young. But Hou Meng is different. A poem "Linjiang Xian" filled him with hope for the future, and also took the opportunity to hit back at those who laughed at him.
Later, he was promoted to prime minister. It was knowledge that gave him opportunities and enriched himself.
Because knowledge is power. "Science is the primary productive force, and knowledge is the source of scientific development."
It is the country's emphasis on knowledge, because the development of the country cannot be separated from knowledge. This is the foundation of national prosperity and independence from the world.
Cao Gong is eager for talents and attaches great importance to Guan Yu. Warm wine to kill Guan Yu, five customs to kill six generals, are Cao Gong's appreciation of Guan Yu, and there is another way to release Cao Cao's Huarong.
Duke Zhou's vomit also reflected his thirst for talents. Because the development of the country needs talents, so does the governance of the country.
And knowledge is also the cornerstone of people's independence from the world cultural forest. The Nobel Prize is a praise for people who have knowledge.
Lu Xun, Contradiction and Mo Yan are all owners of knowledge, and knowledge has brought them the strength and breath of life value. Because they firmly believe that knowledge is power.
(article reading network:) some people may wonder: how can a person with rich knowledge become a nerd? Some people don't read much but have a successful career? In my opinion, people become bookworms because they don't know how to use their knowledge. The success of people who read little is only good at using their brains and working hard.
Knowledge is power, which makes you full of hope for life.
4. A 400-word composition about common sense of science and technology
Is the development of science and technology beneficial or harmful?
If you ask whether the development of science and technology is beneficial or harmful? Without a doubt, of course it is Lida! What is the explanation? No need to explain! China's 8,000-year history of civilization is irrefutable evidence. History has been changing and technology has been developing. Humans learn to use or cook food from primitive life, from relying on nature to thriving, from unarmed to metallurgical smelting. This is not progress, this is not development? If the disadvantages outweigh the advantages, then why do human beings choose progress in unison? Because only progress can make tomorrow better!
It is sad for a person not to make progress, a country is declining without progress, and a world is dark without progress. Only by continuous progress can human life be sublimated. God has given mankind a clever brain and a pair of hardworking hands. It is precisely because human beings choose to make continuous progress instead of enjoying success that they can stand at the top of today's food chain.
Life is so comfortable, life is so pleasant and life is so wonderful. Our average life expectancy is 30 years higher than that in ancient times, and we don't even have to go out to visit relatives and friends. Isn't this all the benefits of scientific development?
Therefore, science and technology change history, and we don't need to question whether the development of science and technology is beneficial or harmful, it is beneficial! Rita! Rita! You said that the development of science and technology brought air pollution, you said that the development of science and technology produced white garbage, and you said that the development of science and technology caused the warming of the temperature ... Everything can't be perfect, so you can conclude that the development of science and technology does more harm than good? Different times lead to different problems. Except air pollution, all provinces and cities have put forward prevention plans. White garbage, unified treatment; Automobile exhaust causes the temperature to warm, and scientists have also developed solar-powered cars. Look at now, solar water heaters, solar air conditioners, solar cells ... environmental protection and energy-saving solar energy are gradually entering thousands of households. Isn't this the development of science and technology?
Although there are disadvantages, it is irrelevant compared with the scientific and technological development concept of benefiting mankind and protecting home. As long as there are drawbacks, scientists will try to solve them. We can't stop eating because of choking, and the pace of scientific and technological development will not stop for a moment. There is nothing wrong with the development of science and technology, which is profitable! Just because science and technology have been advancing and science has been developing, cunning sophistry, generalization and unreasonable entanglement can't change this truth. It is true that technology has changed history. Without the development of science and technology, our life is unimaginable. Our days are dark. It was the development of science and technology that saved us, and it was science that saved us from the age of hydrothermal. We should respect him with awe. How can we say that the development of science and technology is full of drawbacks?
Science and technology change history, and knowledge changes destiny. We have entered the 2 1 century, an era full of high technology. Science has changed our lives, and science has changed our destiny. "Knowledge is power". Why do we, the people of China, a vast country with a population of 65.438+0.3 billion, stand tall in front of the world? Because our technology is constantly developing! Our technology is constantly improving!
The advantages of scientific and technological development outweigh the disadvantages, which is an eternal theme!
With the development of science and technology, human civilization has taken a big step forward, from the previous carriage to the car, from the previous oil lamp to the electric light. ...
5. A scientific experiment composition
In our life, science is everywhere. Without science, our life would be a mess.
There will be many interesting scientific phenomena in life. How did these scientific phenomena come into being? Let's take a look together! I saw an interesting scientific experiment on TV today, which is called "floating coins". How did the coin float? Out of curiosity, I wanted to try it myself, and then I rummaged around at home looking for materials. Where are the glasses? It's everywhere when it's not needed at ordinary times, but now it's gone! I turn left and look right, ah! It's hidden in the cupboard! Fill the glass with water, let me see, um, what else? Oh! Yes, and the most important coin is not ready! So, I rummaged around the house for coins. After a while, I came out with a dusty face and ten shiny coins in my hand.
Ok, everything is ready! Now, I want to "show my skills" and do this little experiment! I first put the cup full of water on the table, then picked up a coin with my hand and gently put it on the water. Hey! How did it sink? I did it another way. I picked up the coin with a clip, let the clip immerse in the water, and finally let go of the clip, but it sank! Play it again! Aha! This time it floated, and then I did it again, and it floated. But why on earth is this? It turns out that the surface of the liquid is like a tight rubber film.
There is a pulling force between parts, which is called surface tension. If we gently put a coin flat on the water, because the coin is very light, the surface tension of water can bear its pressure on the water, so it can float on the water without sinking.
After several tests and data verification, I am full of confidence, waiting for my mother to come back, I want to make her dumbfounded. At this time, my mother came back. I said to my tired mother, "Mom, come and see me perform a magic trick for school."
Sheng pulled and dragged her to the "audience". Everything is ready, ah! So nervous! Looking at my mother's face full of doubts, I'm really afraid of screwing up! Fortunately, scientific experiments are reasonable, so I don't need to be too nervous.
After reporting the name of the small experiment, I quickly put the first coin on the water. Oh, no, the first coin sank to the bottom of the water, and my heart was pounding. Looking at my mother sitting there with a gloating face, I have no bottom in my heart. The second coin was put down again. Hey, why not? I released the third one, yeah! It worked! But I want to see why the first two can't. Ah! It turns out that the first two coins are dimes and the last one is a penny! I'm still proud to find out why. After all, I have mastered some little knowledge through this scientific experiment.
There will be many scientific phenomena in our life. Just like today, every scientific experiment will have certain scientific reasons. Let's explore these mysteries together and discover and explore this wonderful science.
6. Introduce the composition of scientific knowledge
Knowledge is power. Knowledge is power-inscription Knowledge is the source of all power and the capital for literati to express lofty aspirations. It is the source of strength for the country's prosperity and scientific development; It is the cornerstone of people's independence from the world cultural forest.
Because knowledge is power. "Jiangshan has talented people, and they have been leading the way for hundreds of years."
It is the literati's desire for knowledge, the literati's desire to display their talents, and the desire of those who achieve great ambitions. Preface to Wang Tengting made Wang Bo famous and expressed his depressed mood.
After studying hard for ten years, he succeeded only once. Now is the moment when his ambition can be expressed. However, it is deeply regrettable that he was ill-fated and died young. But Hou Meng is different. A poem "Linjiang Xian" filled him with hope for the future, and also took the opportunity to hit back at those who laughed at him.
Later, he was promoted to prime minister. It was knowledge that gave him opportunities and enriched himself.
Because knowledge is power. "Science is the primary productive force, and knowledge is the source of scientific development."
It is the country's emphasis on knowledge, because the development of the country cannot be separated from knowledge. This is the foundation of national prosperity and independence from the world.
Cao Gong is eager for talents and attaches great importance to Guan Yu. Warm wine to kill Guan Yu, five customs to kill six generals, are Cao Gong's appreciation of Guan Yu, and there is another way to release Cao Cao's Huarong.
Duke Zhou's vomit also reflected his thirst for talents. Because the development of the country needs talents, so does the governance of the country.
And knowledge is also the cornerstone of people's independence from the world cultural forest. The Nobel Prize is a praise for people who have knowledge.
Lu Xun, Contradiction and Mo Yan are all owners of knowledge, and knowledge has brought them the strength and breath of life value. Because they firmly believe that knowledge is power.
(article reading network:) some people may wonder: how can a person with rich knowledge become a nerd? Some people don't read much but have a successful career? In my opinion, people become bookworms because they don't know how to use their knowledge. The success of people who read little is only good at using their brains and working hard.
Knowledge is power, which makes you full of hope for life.
7.400 words scientific common sense composition
Give you a straw, an ordinary straw for drinking fruit juice, and give you a potato, a fist-sized potato just bought from the vegetable market. Excuse me: can you penetrate potatoes with a straw?
Can't! You could say that. What would happen if you were given an auxiliary tool-a cup?
I was reading a popular science magazine at noon today and saw an article entitled "Penetrating potatoes with straws". I find it incredible. Potatoes are hard, that fragile straw ... think about it, and I think of that classic.
The advertising slogan "Anything is possible". So I prepared the experiment with the mentality of overthrowing this statement and witnessing the miracle. To tell the truth, I am extremely ambivalent, but most of them still can't do it. Seeing is believing, and then driven by curiosity, I found a cup, a potato and a straw.
I first put the potato rack on the cup, then grabbed the straw with four fingers of my right hand, then buckled the top of the straw with my thumb, and finally stuck it hard-the straw Huo Ran passed through the potato.
I can't believe I rubbed my eyes, but I still kept the graceful posture of straw and potatoes. I still don't believe it. I think of magic, which reminds people that when they see it with their own eyes, they will have hallucinations. I don't believe my eyes anymore. I called my mother, and she didn't believe me, but we changed straws, potatoes and cups. We did several experiments and the results were the same. I have to believe it's true.
Later, I understood that the key of this experiment is to fasten the top of the straw with your thumb. In this way, the straw cut off from the airflow becomes extremely hard enough to penetrate the potato.
I have to admit how ridiculous my "hypothesis" was before the experiment. A slender straw really has the ability to penetrate potatoes.
This little experiment woke me up. In life, how many "impossibilities" exist only in the brain and not in the real world. And I, because of the "impossible" in my heart, missed many opportunities to try!
When the straw penetrated the potato, it also penetrated the prejudice in my heart. Science is around us, we should learn to try to believe!
8. Composition of scientific knowledge
After reading 100,000 Why, I think this set of books is very good. This set of books includes mathematics, physics, chemistry, animals, human science, earth science, universe science and environmental science.
Volume, information science volume, engineering science volume and index data volume. 100,000 Why is very suitable for teenagers. There are all kinds of questions and answers in it. For example, why is there a positive value after tossing a coin many times?
The number of times on the front and back is roughly equal. In the process of work or study, there are bound to be some problems. We should read more books like 100,000 Why. With the rapid development of modern science, people have to understand it.
Understanding the world requires more and more scientific knowledge. Under the new historical conditions, if you are ignorant and backward and lack basic knowledge, you may be confused by some fake science and fall into blind superstition. To this end, I
We must strengthen our study, improve our quality and expose the true face of pseudoscience with correct scientific ideas, methods, knowledge and technology.
9. Composition of scientific knowledge
After reading 100,000 Why, I think this set of books is very good. This set of books includes mathematics, physics, chemistry, animals, human science, earth science, universe science, environmental science, information science, engineering science and index materials.
100,000 Why is very suitable for teenagers. There are all kinds of questions and answers in it. For example, why are the heads and backs roughly equal after tossing a coin many times?
In the process of work or study, there are bound to be some problems. We should read more books like 100,000 Why. With the rapid development of modern science, people need to master more and more scientific knowledge in order to know the known world. Under the new historical conditions, if you are ignorant and backward and lack basic knowledge, you may be confused by some fake science and fall into blind superstition.
Therefore, I must strengthen my study, improve my quality and expose the true face of pseudoscience with correct scientific ideas, methods, knowledge and technology.