Science is closely related to life, and many phenomena in life can be explained by scientific knowledge.
In summer, the clothes in my wardrobe are basically bright and dazzling colors, and there are few dark clothes such as black. I found that black was popular now, so I pestered my mother to buy it for me. My mother disagreed and said to me, "Have you ever heard of' white in winter and black in summer'?" This proverb? This is the experience that people have summed up from their life practice. Do you know the scientific truth it contains? The natural environment in which we live is rich and colorful. As we all know, sunlight is a mixture of red, orange, yellow, green, blue, indigo and purple. Different objects have different absorption and reflection abilities for different colors of light. People can't see the light absorbed by objects, only the reflected light. Therefore, what color light an object can reflect, in our view, it has what color. The sun not only brings people light, but also brings a lot of radiant heat. For radiant heat, black only absorbs and does not reflect, while white is just the opposite. Generally speaking, dark things absorb more sunlight and radiant heat and reflect less; Light-colored things reflect more and absorb less. Therefore, people like to wear light-colored clothes in summer, such as white, gray, light blue and light yellow, which can reflect a lot of light and radiant heat and make people feel cool. It is best to wear black and dark blue clothes in winter. They can absorb a lot of light and radiant heat, and people naturally feel warm. "
One day, I came home from school, sweating profusely. I rushed into the kitchen to open the refrigerator and took out a bottle of drink, but the glass bottle cap wouldn't unscrew, and no matter how hard I tried. Dad was cooking, took the bottle, baked the bottle cap on the fire and unscrewed it easily. I don't understand. Dad explained, "Do you know why? This is the reason why it expands with heat and contracts with cold. When the bottle is placed in the refrigerator, the temperature is very low, and the bottle cap shrinks, so it is not easy to unscrew it by biting the bottle mouth tightly. After the fire is heated and expanded, the bottle cap becomes loose and can be opened without much effort. " I am happy to dance with my wine. This is really a good idea. It's so cool to drink in one gulp!
In fact, there are many small scientific methods in life, all of which contain scientific principles. As long as you are willing to use your head, the method must be much more difficult. As long as we pay attention to observation and start exploring the problems around us, we can all enter the world of science. Science is all around us.
The science of life is all around us. Science is closely related to life, and many phenomena in life can be explained by scientific knowledge.
In summer, the clothes in my wardrobe are basically bright and dazzling colors, and there are few dark clothes such as black.
I found that black was popular now, so I pestered my mother to buy it for me. My mother disagreed and said to me, "You have heard that winter is white and summer is black." .
Is this a proverb? This is the experience that people have summed up from their life practice. Do you know the scientific truth it contains? The natural environment in which we live is rich and colorful. As we all know, sunlight is a mixture of red, orange, yellow, green, blue, indigo and purple.
Different objects have different absorption and reflection abilities for different colors of light.
People can't see the light absorbed by objects, only the reflected light.
Therefore, what color light an object can reflect, in our view, it has what color.
The sun not only brings people light, but also brings a lot of radiant heat.
For radiant heat, black only absorbs and does not reflect, while white is just the opposite.
Generally speaking, dark things absorb more sunlight and radiant heat and reflect less; Light-colored things reflect more and absorb less.
Therefore, people like to wear light-colored clothes in summer, such as white, gray, light blue and light yellow, which can reflect a lot of light and radiant heat and make people feel cool. It is best to wear black and dark blue clothes in winter. They can absorb a lot of light and radiant heat, and people naturally feel warm.
"One day, I came home from school, sweating profusely. I rushed into the kitchen to open the refrigerator and took out a bottle of drink, but the glass bottle cap wouldn't unscrew, and no matter how hard I tried.
Dad was cooking, took the bottle, baked the bottle cap on the fire and unscrewed it easily.
I don't understand. Dad explained, "Do you know why? This is the reason why it expands with heat and contracts with cold.
When the bottle is placed in the refrigerator, the temperature is very low and the cap will shrink. If you bite the bottle tightly, it's not easy to unscrew it. After the fire is heated and expanded, the bottle cap will loosen and can be opened without much effort.
"I am very happy to dance with a drink. This is really a good idea. It's so cool to drink in one gulp! In fact, there are many small scientific methods in life, all of which contain scientific principles. As long as you are willing to use your head, the method must be much more difficult.
As long as we pay attention to observation and start exploring the problems around us, we can all enter the world of science.
Science is all around us.
I found the above on the internet, I hope to give points.
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Scientific composition science in 400-word life is around us. Science is closely related to life, and many phenomena in life can be explained by scientific knowledge.
In summer, the clothes in my wardrobe are basically bright and dazzling colors, and there are few dark clothes such as black.
I found that black was popular now, so I pestered my mother to buy it for me. My mother disagreed and said to me, "You have heard that winter is white and summer is black." .
Is this a proverb? This is the experience that people have summed up from their life practice. Do you know the scientific truth it contains? The natural environment in which we live is rich and colorful. As we all know, sunlight is a mixture of red, orange, yellow, green, blue, indigo and purple.
Different objects have different absorption and reflection abilities for different colors of light.
People can't see the light absorbed by objects, only the reflected light.
Therefore, what color light an object can reflect, in our view, it has what color.
The sun not only brings people light, but also brings a lot of radiant heat.
For radiant heat, black only absorbs and does not reflect, while white is just the opposite.
Generally speaking, dark things absorb more sunlight and radiant heat and reflect less; Light-colored things reflect more and absorb less.
Therefore, people like to wear light-colored clothes in summer, such as white, gray, light blue and light yellow, which can reflect a lot of light and radiant heat and make people feel cool. It is best to wear black and dark blue clothes in winter. They can absorb a lot of light and radiant heat, and people naturally feel warm.
"One day, I came home from school, sweating profusely. I rushed into the kitchen to open the refrigerator and took out a bottle of drink, but the glass bottle cap wouldn't unscrew, and no matter how hard I tried.
Dad was cooking, took the bottle, baked the bottle cap on the fire and unscrewed it easily.
I don't understand. Dad explained, "Do you know why? This is the reason why it expands with heat and contracts with cold.
The bottle is placed in the refrigerator, the temperature is very low and the cap shrinks. If you bite the bottle tightly, it's not easy to unscrew it. After the fire is heated and expanded, the bottle cap will loosen and can be opened without much effort.
"I am very happy to dance with a drink. This is really a good idea. It's so cool to drink in one gulp! In fact, there are many small scientific methods in life, all of which contain scientific principles. As long as you are willing to use your head, the method must be much more difficult.
As long as we pay attention to observation and start exploring the problems around us, we can all enter the world of science.
Science is all around us.
Science and I The world we live in is both mysterious and interesting. We need to explore its mystery and uncover its true colors.
Scientific knowledge is an important part of scientific literacy, and scientific inquiry is a more scientific way for us to acquire knowledge, which can make us have a deeper understanding of science and scientific concepts and things.
Technology has already penetrated into our lives and integrated into one.
It is integrated with our life because it is closely related to everyone. There are sayings like "scientific fitness" and "scientific health preservation" everywhere in life.
It actually embodies the practicality and instrumentality of popular science in public consciousness.
I think middle school is the golden age to cultivate scientific interest and innovation ability.
Scientific inventions and creations are everywhere around us. As long as we analyze carefully, make bold assumptions, use our imagination and dare to innovate, then every teenager of us may become a scientist.
I am not proficient in science, but I still have some contact and understanding of science.
Once, I poured different amounts of water into the same cup, knocked it a few times and found that the sound was different. I went online (high-tech, very useful for the benefit of mankind) to find out why.
It turns out that knocking causes the cup to vibrate, and the cup vibration drives the water surface to vibrate, thus causing the air column to vibrate. The air fluctuates, bounces back after hitting the water surface, and forms a standing wave together with the original wave (our common stringed instruments also rely on the principle of this standing wave to emit sounds of different frequencies), thus making sounds.
Same.
Both the water column and the air column in the cup are vibrating, but the frequency and amplitude are different.
In fact, this profound scientific principle is around us, and we should learn to use it constantly for the benefit of mankind! We should always keep a sense of science and technology, actively participate in daily scientific and technological activities, look for science around us, learn to solve problems in life by scientific methods, and make life full of scientific fun!
There is science everywhere in life, but we don't pay attention to it. People can't live without science in daily life, but they need science more in production, labor, sports, health and military affairs. "Proud of advocating science and ashamed of ignorance" has spread a lot of common sense in daily life, which is the experience of predecessors. Therefore, we take these common sense of life for granted as correct and beneficial, and often do it without thinking. It becomes a habit over time, which also makes your life troublesome, because these so-called "experiences" and "common sense" are just contrary to common sense in life. To believe in science, only by respecting it can we avoid taboos and be less troubled by it. It's cold in winter, and the glass bottle cap often can't be unscrewed, no matter how hard we try. This is the reason why it expands with heat and contracts with cold. When the weather is cold, the bottle cap shrinks and tightly bites the bottle mouth, which is not easy to unscrew. After the fire expands, the bottle cap becomes loose and can be opened without much effort. When the old man wears a needle, she rubs it on her hair. Do you know why? This is actually lubrication to reduce friction. People's hair contains grease, so lubricating oil is added to the needle when wiping hair, which can reduce friction and make it easy to wear the needle. Lunch meat, black beans and tomato sauce beans are all delicious canned food, and they can be preserved for a long time without spoilage. This is because canned food is sealed and bacteria can't enter. When people make canned food, it makes use of the air in which microorganisms live. Some foods can't be heated at high temperature, otherwise it will affect their nutrition and taste. For these foods, we can quickly heat them to a certain temperature (generally 60℃~ 85℃) 15 ~ 30 minutes, and then quickly cool them. This heating method can not only kill most microorganisms in food, but also keep the original taste. This heating method is called Pasteur disinfection. It was invented by the French scientist Louis Pasteur. Science should study various natural phenomena and find out the causes and laws of their emergence and development. Every little problem may lead to scientific discovery. Newton was curious about the apple landing and discovered the law of everything. James watt was curious about the improvement of the steam engine by opening the lid after the water was boiled. As long as we pay attention to observation and start exploring the problems around us, we can all enter the world of science. Science is all around us. ....
I found ants. Sometimes, maybe you will find that there are always some "lazy ants" among the swarms of ants. Other ants work very hard, very hard, busy in and out, but what about these "lazy ants" No wonder people call them "lazy ants", because they don't go out for food, they do nothing all day and look around.
However, the fact tells people that it is this lazy ant who idles all day, after the ant colony cuts off the food source, and when those ants who usually work hard are at a loss, they "step forward" and lead their partners to move to the new food source it has detected.
Although lazy ants don't work, they use their wisdom to get everyone out of trouble in times of crisis. It can be said that their contribution is greater and more commendable than that of hardworking ants.
A biologist once divided all lazy ants into several groups and put them together. As a result, 80% of lazy ants become hardworking ants, but 20% of ants are still lazy. All the ants in their original ant colony stopped working and were in a mess. Until those lazy ants were put back, the whole ant colony resumed its busy and orderly work.
It can be seen that lazy ants are indispensable in the whole ant colony! Lazy ants spend most of their time on "reconnaissance" and "research".
They can observe the weakness of the organization, have the ability to maintain the survival of the ant colony in difficult times, can avoid putting all the ant forces into the work of carrying food, and at the same time keep exploring new foods, thus ensuring that the ant colony can continuously obtain new food sources.
It is important that diligent ants exist, but only when diligence and laziness complement each other will the whole group become stronger.
The principle of diligence, laziness and laziness, laziness is not necessarily a survival wisdom.
If you are lazy to do housework, you can be diligent in thinking.
Sometimes, as a student, you don't have to care too much about the trivial things in life, and you don't have to be obsessed with learning. There is no need to engage in sea tactics. Only by learning to analyze, learn to think and know what things are can we be more calm in the face of life and study.
There is a saying that "people who attend are not busy, and busy people will not."
Only by jumping out of the narrow vision can we find the key to the problem.
Learn the spirit and way of lazy ants, and stand tall to see far.
One Sunday 500 words ago, at breakfast, I peeled off a well-cooked egg and put it vertically on the mouth of a glass bottle, with a small part of the egg submerged in the bottle.
I used to press an egg with my finger, but when I pressed it into a bottle, it broke into several pieces.
At this moment, it suddenly occurred to me: Can you put this light egg in a bottle without damaging it? I asked my father this question. Father thought for a moment and said, "There should be no problem.
"Dad found a few pieces of waste paper, knead into a ball. He lit the paper with a match and carefully threw it into the bottle.
Dad said to me, "Look at this, I'm going to do magic!" " "He put an egg with a shell on the bottle mouth, pressed it gently with his hand, and heard a bang, and the egg completely fell into the bottle.
I was very surprised. "What's the trick?" Dad said, "I'll do a little experiment and you'll understand."
"Dad put the candle in a small plate, then put it in a basin of water, let the candle stretch out about a third of the water, light the candle, and then cover the candle with a glass bottle; Put some supports on the bottle mouth and hold the bottle up a little so that water can enter and exit the bottle; At the same time, make a mark flush with the water surface on the outer wall of the bottle.
The candle burned for a while and then went out.
At this time, I found that the water level in the bottle had risen to one-fifth of the hollow part of the bottle.
How is that possible? Dad told me: when the candle burns, use up the oxygen in the bottle, which only accounts for about one-fifth of the air.
When the oxygen is used up, the flame goes out and water is pushed into the bottle by external air pressure.
In the experiment of pushing the eggs into the bottle, because the shelled eggs blocked the whole bottleneck, the outside air could not enter the bottle to replace the consumed oxygen, so the air pressure in the bottle decreased and the eggs were sucked into the bottle.
I didn't expect that as long as we pay attention to everything from time to time, there will be many new discoveries in life! Science is everywhere in life. Science is everywhere in life. It not only brings us convenience, but also brings us a lot of fun.
If you don't believe me, let me give you an example.
Once, I went to the grocery store to buy snacks, and my aunt gave me a fifty-cent coin. I put it in my pocket without looking.
I will take out this coin when I go home.
Ah! The surface of this coin is too dark to read the words clearly. Can this money be spent? I tried to wash it with water, but after washing, the coin should look like it or not, and it is intact. I have no choice but to waste a little and throw it away.
Just as I was about to throw the coin into the trash can, I suddenly heard a voice shouting, "Grandson, don't throw the coin away!" " "When I saw it, it turned out to be grandma, so I said to him," Don't keep it, I have a good way to make it new! ""Say that finish, grandma took the fifty-cent coin, mysteriously took me to the kitchen, put the white coin in a plate, put some vinegar and drowned him. After a while, grandma took out the fifty cents and wiped them with toilet paper.
A 50-cent coin is simply different, glittering and as good as new.
What's going on here? I asked grandma.
Grandma said, "I read this in a book. The book didn't say what it was." So I started looking up books.
I found the answer in the book. It turned out that the nickel coin turned black because the copper plating on the surface of the coin was oxidized in the air, forming black copper oxide.
Acetic acid and amino acids contained in vinegar can react with copper oxide. When copper oxide is removed, a pentagonal coin becomes as new as before.
I am very happy, because I have learned some scientific knowledge! You see, science is everywhere in life.
As long as you are willing to observe carefully and think seriously, you can learn more scientific knowledge and become a little scientist! There is science everywhere in life. "Ah, such a small thing difficult? This is ridiculous.
"I said easily after receiving the task, my mother asked me to boil eggs.
"You don't look down upon this task.
"My mother said mysteriously," but this task contains many scientific reasons.
"All right, all right.
"I immediately ran to the kitchen, took out three eggs and started cleaning.
Next, it's time to fill the pot with water.
"Well, the water should be put in the eggs to be flooded, so it's neither more nor less.
This is also a science.
"I thought, conveniently turn on the tap to pick up the water.
It's almost time to touch it. I'm about to start my lesson in boiling eggs.
Because of my cooking experience, it can be said that I am familiar with it. Turn on the valve switch and exhaust fan of the natural gas pipeline, and I'll wait by.
"It's really simple.
"I thought contemptuously, lit a fire and put the eggs in the pot.
The water is slowly heated, and the eggs lie quietly at the bottom of the pot, which reminds me of an idiom-boiling frogs in warm water.
One minute, two minutes ... The water finally boiled. Looking at the boiling water, I think this boiled egg must be perfect.
At this time, my mother suddenly came in and said with a smile, "Save resources."
"The words sound just fell and my mother turned off the fire.
"Mom, why did you turn off the fire?" I asked strangely.
"This is to use the waste heat of water to heat eggs.
In this case, I think it can save resources.
"Mom said proudly.
"Oh, this is life science, it's amazing.
"I said to myself.
Finally, the eggs are all out of the pot.
So I started peeling.
As a result, this is the trouble.
The skin of the egg clings to the egg, as if unwilling to leave.
If I peel it hard, it will fall with the egg white.
"No, I don't believe this can beat me!" I encouraged myself, and then I continued my peeling process.
I was as anxious as Wukong. When Wukong learned that Master had been taken away by a monster, he scratched his head, but he couldn't finish peeling the eggshell.
No way, I had to start thinking: "they all say that heat expands and cold contracts." The temperature of eggs is very high now. It may be better if it is frozen and peeled. "
"With the idea of giving it a try, I threw the eggs into a bowl of cold water.
A minute later, it is estimated that the baby's eggs have been soaked enough in it, so I fished them out.
Sure enough, peeling is much easier now.
I can't tell you how happy I am to see pieces of eggshells flying in the air and entering the trash can.
at once ...
There are scientific elements everywhere in life. The 20th century was a century of giving orders. Who will call the shots? Relying on modern science and technology, the development of modern science and technology can really be described as "like a spring breeze coming at night, blowing open the petals of ten thousand pear trees".
Archimedes once said, "Give me a fulcrum and I can move the earth." .
In the 20th century, people finally found that fulcrum, that is, science and technology.
Science comes from the bits and pieces of life. For example, in order to prove the law of free fall, Galileo threw a wooden ball and an iron ball of the same size from the leaning tower of Pisa, and both balls landed at the same time, thus refuting Aristotle's theory that the heaviest one fell first.
One hot afternoon, Newton was lying under an apple tree, thinking about the laws of planetary motion. A ripe apple fell from the tree and hit him, which made him open his eyes and discovered the law of gravity.
Watt was on vacation at grandma's house, and he happened to find that the lid of the kettle was knocked over by boiling water, so he invented the steam engine.
I also made a small discovery. Once I accidentally knocked over my milk tea at home, and the milk tea spilled all over me, thinking, "It's a good thing my mother is not at home, or I will be scolded and wash my own clothes."
So I took off my clothes and put them in the water. The clothes sank. When I put away the washing powder, my clothes floated on the water again.
I thought it was novel, so I made a basin of clean water and put a piece of paper money in it. Soon I sank into the water. I put some washing powder in it, and then the paper money floated again. It was really interesting.
There is science everywhere in life, which needs us to discover.
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At the end of the composition about science in life, science is everywhere, from the mysterious universe to everything around us.
Take an incident in my third grade as an example. It happened to be Sunday, and I felt bored because I had finished my homework.
So I went to play with my fourth-grade cousin, who happened to be free.
So she suggested playing table tennis.
As soon as I heard this, I clapped my hands and shouted "Yes, yes!" So she gave me a table tennis board.
Then she took me to the table tennis table in her backyard.
She said to me, "Ready, I'll serve."
"Say, just listen to 1 of" dong ",the ball flew towards me like a rocket.
I was in a hurry, so I just picked it up and the ball landed.
Just as I was about to pick it up, my little cousin came with a "wow", impartial, and just stepped on the table tennis, only to hear that the table tennis collapsed with a bang.
My sister frowned and said angrily, "Don, you pay for it!" "No, no, no, if you want to pay, also the little cousin to pay.
"Sister and I quarreled loudly.
Grandma, who is famous for saving, laughed when she heard the news and learned what had happened.
I saw her pour a cup of boiling water and put the ping-pong ball in it.
After a while, a miracle happened, and the flat table tennis ball gradually became round in hot water.
Table tennis is back! This will surprise my sister and me.
We pestered grandma to ask why, and grandma said she didn't know either.
I was puzzled, and my sister suggested going to my neighbor's house to search for the answer online.
It turned out that table tennis was put into hot water, and the air inside was heated and expanded, thus restoring its original state.
Life is full of science! Only when we are serious can we find them.
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Science in life (for reference only) On weekends, my mother cooks in the kitchen. Suddenly, the oil in the pot burned. I saw it and shouted, "mom, water it!" " "Mother didn't go to get water, but quickly picked up the lid. After a while, the fire went out.
I was surprised to ask my mother, "Firemen's uncles always put out fires with big waterwheels. Why not use water? " Mother smiled and said, "Fire fighting doesn't always use water, especially when the oil is burning.
Because oil is lighter than water, pouring oil into the pot will explode, which will not only fail to put out the fire, but also easily lead to a bigger fire. "My mother also told me that fire needs oxygen. After the oil pan caught fire, it was quickly covered with a lid. After a while, the oxygen in the pot disappeared and the fire went out. " Deformable door "The door of my room is a solid wooden door, which is very beautiful and very skillful".
In summer, there are always days when it is disobedient, and it is very laborious to close the door, as if it has gained weight; It seems to be thinner in winter, and there is always a small crack when closing the door.
I asked my father what was going on, and my father explained, "It may be that the wood was not completely dry when the uncle worker made the door. In summer, the weather is hot and the temperature is high, so the wooden retractable door becomes fat and can't be closed. In winter, the weather is cold, the temperature is low, the wood shrinks, and the door becomes thinner and cannot be closed tightly. This is why it expands with heat and contracts with cold.
"Listen to dad, I think, life is full of science, so be sure to study science!
Please indicate the source? Scientific composition in 400 words of life