Excellent popular science composition

In daily study, work and life, when it comes to writing, everyone is certainly familiar with it. Writing is an important means to cultivate people's observation, association, imagination, thinking and memory. So have you ever studied composition? The following are the excellent popular science compositions I collected for you. Welcome everyone to learn from and refer to. I hope it helps you.

1 It was raining, and I came to the International Education Park, where a large-scale exhibition of marine biological sciences was being held. First of all, we are greeted by a luxurious and magnificent modern urban building. As soon as we entered the gate, we took the elevator to the marine biological science exhibition hall on the third floor.

As soon as I entered the museum, I saw large and small exhibition halls separated by wallpaper covered with marine popular science knowledge. There are fish of various colors and sizes in various fish tanks, and the most striking thing is the introduction on the wallpaper. For our young students, it is of great significance to carry out popular science education to protect the ecological balance.

Approaching the fish tank, there are all kinds of fish, including beautiful herringbone butterflies, strange barracuda and charming lucky cats. The most striking thing is the fierce Chinese alligator, which lies there quietly and seems to be rushing up at any time; One of the strangest things. It is called Stichopus japonicus. I thought it was just a fish with thorns, but when the stick touched it, it became a ball, and every thorn stood upright. This should be its weapon to defend its opponents.

Among so many marine creatures, I like turtles and longevity stars. Turtles are ancient and precious animals. They were born more than 200 million years ago and can live to 152 years old at the longest. I was surprised by a green turtle in the exhibition. Its huge body weighs hundreds of kilograms, wears armor and has four strong legs. Once in the water, it swam around, with a big head and a pair.

The popular science exhibition of marine life has made me understand the marine ecology and expanded the horizon of the ocean. We should actively participate in marine ecological protection and make our ocean more beautiful and magical.

Today, my mother and I came to Changshu Institute of Technology, because this university is holding a high-tech giant simulation dynamic animal science exhibition. At the art gallery. My mother and I parked the car and came to Pang Xun? Art Gallery, see Pang Xun? There are two big inflatable dinosaurs at the entrance of the art museum. One is thin on the left and the other is fat on the right. So cute!

My mother took out the admission ticket and gave it to the ticket inspector, and then we ran in happily. As soon as we entered, I saw a lot of people around something. I was short, so I went in and had a hard time getting into the innermost layer of the crowd. I observed that it was A Liang Lang who attracted so many people.

Then Liang Long shook his head and tail-oh, it growled, and many children teased it with things. I secretly smiled: hey, these are fake dinosaurs, and we have to feed them with something! We saw some dinosaurs elsewhere, such as Stegosaurus, Triceratops, Deinonychus and so on. Stegosaurus wagged its head like Liang Long. Even more interesting is Triceratops. I saw Triceratops lying in a pile of sand. When its body rises and contracts, its eyes blink as if it were really alive. This is the exhibition area that simulates the dinosaur behemoth.

Then my mother and I came to the knowledge page exhibition area again. There are many people in the knowledge exhibition area. Many people are writing with pens. My mother and I went to have a look. It turns out that someone is doing the contest on the back of the ticket, and someone is extracting information.

The bell rang and the long-awaited comprehensive practice class began. In this class, our Moore team will give you a lecture on "scientific change". In order to leave a deep memory for everyone, we have prepared for a long time.

First of all, we introduced what science is and why we should study science. We also collected stories of some famous scientists, such as Newton, Hawking, Einstein and Qian Xuesen. With Ye's explanation, the tense and interesting game began. The first game is "magic little towel". Zhou Yan and I took two small towels, folded them into accordion-like folds, and clamped them with our thumb and forefinger, so that Hercules Ye Feng Shuo could pull them hard, but they couldn't open them. The second game is "Coin and Golden Rooster Independence". Ma Jinjie put a thin bill on the table, put a coin on it, and then slowly pulled it away. This game is the most difficult. Ma Zhijie was both excited and nervous during the performance. The whole class held their breath and watched nervously. When the paper money was pulled into a straight line and the coins stood firmly on the paper money, the whole class suddenly heard thunderous applause. The third game is "straw sprayer". Wang Yousheng poured a glass of water, put a long straw and a short straw at right angles into the cup, and blew from one end of the long straw, but there was no water mist. Moderator, Ye, we can't wait any longer. He rushed forward and blew with a long straw. Water mist suddenly rose from the bottom of a short straw and sprayed on my face. The whole class laughed when they saw it.

We played games, and Zhou Yan, Fang Lingchang and Bao Zongzhe were not idle. They are busy explaining the principle. Ye's hosting was also wonderful, and everyone cooperated very tacitly. After the game, we learned the principles of friction, center of gravity and air pressure. This activity is really meaningful!

Excellent composition of popular science 4 Today, our science experiment class is really wonderful. How wonderful is it? Don't worry, keep reading!

Our colorful sunshine holiday team brings you the "Soy Sauce and Salt Water Duet". Add a few drops of soy sauce to a cup of tap water to make soy sauce water, then add some salt to tap water to make strong brine, and then prepare a piece of paper, and our experimental tools are ready.

The experiment began. First cover the paper on the soy sauce cup, then reverse the soy sauce cup on the brine cup, and then take out the paper between the two cups. You will find that the soy sauce water suddenly seeps down and stays in place. There is an obvious difference between two cups: soy sauce water and strong brine.

Isn't it amazing that soy sauce water is not mixed with strong brine? I'll tell you the principle: originally, the density of strong brine is high, and the density of soy sauce water is low, so the soy sauce water will float on the strong brine. However, if you put strong salt water on it, then two glasses of water will mix with each other and become light mixed water.

Other teams brought "floating eggs", "impenetrable water bags" and "unusual balloons" respectively, which made people feel very magical and wonderful!

This wonderful scientific experiment class ended with our applause and laughter, from which we learned a lot of scientific truth. Science is wonderful and there are many mysteries waiting for us to explore. We should plug in the wings of science and fly to a perfect tomorrow!

Excellent popular science composition 5 "whoosh, whoosh, whoosh" Hey, why is the playground so lively today? It turns out that this month is the science and technology festival of our school, and we have launched a special popular science show.

There are rocket model launch, remote control four-wheel drive off-road vehicle model, remote control pattern machine flight show, remote control 3D stunt model plane, remote control electric motorcycle, remote control multi-axis aircraft and robot.

Among them, the most amazing thing for me is, of course, the remote-controlled electric motorcycle: after the rocket model was launched, a little man came to us on his war horse. Liu joked beside me, "Hey! What's your name? " "Whoosh, whoosh!" It turns out that his name is wooshing! At this point, the motorcycle has driven to the other side of the playground. The children there have reached out and can't wait to run to the green to catch him. Motorcycles go faster and faster, and sometimes they make several difficult moves, even adults make mistakes. Suddenly, the little man did a backflip, and our hearts were in our throats for fear that he would fall. As a result, he was safe and sound. Finally, he made a perfect one. We were amazed and applauded warmly!

The performance was over, but we were still unfinished. The sun slowly set, as if we wanted to miss this wonderful time.

Have you ever seen a mighty giant dinosaur, a huge luminous pearl and a magical dinosaur egg? Take everyone to Pinghu Museum today to feast their eyes!

More than 4 billion years ago, our earth was born! So how did humans come into being? Let me tell you something!

The earliest era is the geological era, that is, the era of geological division. Then there is Archean, which is the early stage of the formation of the earth. Then came the age of bacteria and algae, which was Proterozoic. After Proterozoic, it was the Sinian period, that is, the era of bathing and nudity.

The following is the CAMBRIAN, which is known as the big explosion of life. Then came the Ordovician, an era when parrots dominated. Followed by the biological landing period-Silurian. Followed by Devonian, the famous fish period. After Devonian came Carboniferous, and insects entered his world.

Then came the Permian, the heyday of amphibians. The Permian was followed by the Triassic, and dinosaurs began to appear. The following is the most familiar Jurassic, which was the heyday of dinosaurs. Gradually, dinosaurs went from prosperity to extinction, which was the meteorite world-Cretaceous, and finally dinosaurs died out. Tertiary is the era of angiosperms and animals, and apes began to appear. Finally, the Quaternary is the age of mankind.

This is the history of our great earth.

Today, I actively participated in the activities of Dapuwan community-popular science knowledge quiz.

I came to the conference room on the third floor of the community early, and when I got there, "Wow! Cool! " I can't help crying. It turns out that the aunts in the community have prepared a comfortable environment for us. Brothers and sisters of Zhejiang Ocean University also put exquisite prizes on the podium.

At 9 o'clock sharp, the activity started on time. First, Big Brother explains the rules of the contest: whoever raises his hand fastest will take part in the answer. If he answers incorrectly, he will get a candy, and if he answers correctly, he will get two. Finally, he will see who gets the most candy, and the top three will win the prize. The game has started. After my brother answered the first question, I immediately raised my hand, but I was still one beat behind. A brother grabbed it, but his answer was wrong, so we had a chance. This time I seized the opportunity, answered the question correctly and won two pieces of candy. In the following answers, I became more and more brave, and I was almost the first to raise my hand to answer questions. The other students were very angry. Why did I answer all the questions? I looked at their unhappy expressions and thought: this kind of activity focuses on participation and should also give other students a chance to answer questions. So, I reduced the number of hands raised. When the activity drew to a close, I took the initiative to raise my hand to receive the prize. I got the right to answer the last question again, and I got it right. I'm so happy, because I got the first question right, and I finished the last one. I was so lucky that I finally entered the top three and won the prize.

Today's activities are really meaningful. I have learned a lot, not only increasing my knowledge of popular science, but also understanding that I should be humble and happy, so that I can treat others and myself happily.

This summer vacation, I had a rich and meaningful time, especially taking part in the popular science contest on behalf of our community, which left me unforgettable memories.

Entering the stadium, the host announced the start of the game nervously and orderly. Today's competition program is divided into three parts, including answering questions, compulsory questions and watching movies. I was a little confused by this tense atmosphere, and so was the second monk Zhang. As a result, after the first round, he only stammered two questions and didn't get good grades. He really regretted it and hated it, and vowed to get it back in the second round. So in the second part of the required questions, he gave full play to his advantages and answered them one by one. Finally, I handed in the answer sheet quickly and well. The third round was to look at the big screen to answer the questions. This is a story about a squirrel. When watching this short film, because of the cute and naughty image of the squirrel, there was a lot of laughter and laughter in the venue, and everyone was chattering and very lively, and the atmosphere was a bit relaxed. But I dare not relax and seriously capture the possible problems in the film. As expected, the host picked up the microphone and a new round of topic began: "How many times did the squirrel step on it?" I saw someone rushing to answer the question and shouted "three times" and "five times". I raised my hand high and answered loudly, "Four times". I saw that the host made a gesture of "OK" to get extra points. I don't want to mention how happy I am. Although it is a simple question, it is very important to be careful. ..... The game is still going on, the atmosphere is still very warm, and I have learned a lot from it. But I didn't get good grades. I think it's a question of participation.

The game is over. I feel that club activities have increased my summer activities and enriched my summer life. I will participate in more club activities in the future.

I am curious about many things, like once, my mother just bought an alarm clock, and I smashed it that day. Because I think its second hand seems to go faster than the big clock outside, I want to take it apart and have a look. The second hand has dropped and lost. I always like to ask my mother this question and that question. Mother is often confused and can't answer. So, just after our summer vacation this year, my mother couldn't wait to help me buy a copy of Touch Science for me to read at home.

I have carefully studied the whole book, which contains many interesting scientific experiments, such as box magic, ice brick cutting, clavicle surgery and so on. Among them, my favorite is clavicle surgery, which is very fun. In order to show my family, I secretly practiced alone in my room. First of all, I want to stand with my feet together against the wall, straighten my arms, and adjust my distance from the wall so that my fingertips are just right. Hey, hey, my arms seem really short. It's so interesting. When my parents come back from work, I will perform magic tricks for them. See them one leng one leng. Does anyone understand why? I have to decrypt it: it's not that your arms are getting shorter, but that when you put your arms behind your body, you will unconsciously lean forward to keep your balance. When you swing your arm forward again, in order to keep balance, your body will unconsciously lean back, so that your arm will be "shortened" and can't touch the wall.

We should study science, love science and apply science. Science is actually around us.

10 I've always liked reading princess books. A few days ago, my aunt came back from a business trip and gave me a set of "100,000 Why" books, so I began to try to contact popular science books.

I don't know if I didn't see it, but I was shocked when I saw it. It turns out that there are endless mysteries and wonders in popular science books, which attracted me at once. I turned a blind eye to "why" one by one, and suddenly became interested in scientific knowledge: why can't I drink boiled water repeatedly? Why can gas masks prevent viruses and so on? Among them, I am most interested in why washed eggs go bad easily. I took a curious look, oh! It turns out that there is a layer of colloidal substance on the surface of newborn eggs, which can block these holes in eggs. This layer of colloidal substance can be dissolved in water. So you wash the dirt of eggs with water, and you wash the jelly together. In this way, the small hole in the eggshell is like an open window, through which bacteria enter, so the egg will soon go bad.

It turns out that there are so many "why" in life that I don't know, but I never care. Today's reading opened a door to scientific inquiry for me. Because there are endless "why" waiting for us to discover and explore. So now we should study hard, think hard and ask questions well, so as to provide first-class technology for mankind and benefit everyone in the future.

I like this book very much, because it makes me understand that I should study hard and learn more new knowledge!

1 1 We saw some other animals on the billboard on the wall: birds and reptiles. My mother and I came to the bird area. The first thing we saw was a picture of a peacock. The male peacock is spreading his long and gorgeous feathers to please the female peacock!

The second hummingbird, I know hummingbirds can hover and fly straight up and down. Here, I know that hummingbirds can fly back. Some hummingbirds flap their wings as many as 90 times a second. We saw many birds, such as yellow throat noise, red-crowned crane, bee tiger, skua and naked eyebrow thrush. My mother and I walked forward again, saw the exit, and walked out of the knowledge page exhibition area.

Go to the second floor, the rainforest exhibition area. As soon as we went upstairs, we saw a cicada caught by a big mantis. Mantis is cutting cicada with sickle. Cicada was in great pain and was running away, but finally mantis caught cicada.

Let me look behind the mantis. Wow, I was shocked. There is a yellowbird behind mantis! The yellowbird is eyeing the mantis! At this time, I suddenly remembered the idiom mantis catches cicada, and yellowbird comes last.

Ah, doesn't this reflect the story of mantis catching cicada and yellowbird coming behind? I told my mother what I found, and my mother also said, yes, it really shows that mantis catches cicada, and yellowbird comes last. But how can this mantis be many times bigger than yellowbird?

At present, the global population is nearly 7.6 billion, and it is still growing. In order to solve this problem, people have the idea of building an air city.

People have built a huge sky city, just like an elevated building. People say, "Will it block the sun from the ground when it is completed?" Actually don't worry! Can shrink! How time flies! It's the Spring Festival of 20xx in a blink of an eye. On this day, people received a greeting card from another planet. Aliens want to visit the earth!

A few years later, aliens arrived as promised. We show the earth to aliens. They are very curious about the earth and like it very much. They want to settle here. Due to the arrival of aliens, the population of the earth has increased again, and even the city of the sky can't live. So we built Ocean City and Underground City. Ocean City is mainly made of glass. On a sunny day, the sun shines on the sea and the whole city shines. It's spectacular. There are many transparent glass pipes between the land and Ocean City, and people can reach the seabed from the land in the blink of an eye by tram. Here, people play with clownfish, say hello to dolphins, and then play hide-and-seek with Uncle Octopus and Miss Crab anytime and anywhere ... At night, the starlight in the air shines brightly in the dark like a natural crystal lamp through seawater and glass. People fall asleep listening to the sound of the waves, have a good dream all night, and feel at ease.

Underground city, as its name implies, is a city built in underground soil, and it is also the favorite city of aliens. They absorbed the minerals in the soil and converted them into energy for utilization, and invented many novel and interesting things.

All right, forget it. I want to explore the city of the sky.

Today, my mother bought me a popular science book about animals.

Before human beings appeared, the earth was ruled by a group of extremely powerful creatures, who lived freely in ancient land, sea and sky. The earliest rulers of the earth were dinosaurs. When dinosaurs died out under natural conditions, the most humble mammals gradually changed greatly. After thousands of years of evolution, they have finally become prominent creatures on the earth. The long-nosed jerboa's slender tail seems to be very suitable for catching insects. In fact, the long-nosed jerboa also likes to catch snakes as food. Sometimes, some small mammals will become food in their mouths. Nicholas monkey looks very strange, with a big head, big eyes and big ears. Their orbital spacing is very narrow, and the outer drum bone is tubular. Niculu monkeys have sharp teeth that can be used to crush the shells of insects. The fossil of the Niculu monkey was found in western Europe. For hundreds of millions of years, in the process of life evolution, nature has created thousands of species. From 240 million years ago to 530 million years ago, there were many monsters on earth. The cruelty and strangeness of these monsters are far beyond our imagination. Although they are extinct at the moment, fossil research proves that they did appear on our planet, and even had a moment of power, and they ruthlessly competed for hegemony on the ancient earth. About 200 million years ago, mammals began to appear on this earth. These animals have fur or fluff on their skin and feed their young with milk. They are warm-blooded animals. Even if it gets cold, they can generate heat by themselves and keep their body temperature. The earliest mammals were very small animals that ate insects and looked like mice.

The earliest mammals laid eggs and fed their offspring with milk. This kind of animal is called monotremes.

I learned a lot from this book, and I'll talk about the rest next time!

14 Some people think science is difficult to understand, while others think science is too abstruse to explore. In fact, science is everywhere around us, no matter how big or small, it can be solved by scientific methods.

Let me talk about the little thing of chopping wood. Perhaps many people think that chopping wood is a simple matter. Just pick up an axe and chop it hard. Actually, it is not.

One day, my father bought a big bundle of firewood, smiled at me and said, "Sister Yu, let's have a competition today to see who has the greatest ability, shall we?" Of course I won't bow my head and admit defeat. Isn't that chopping wood? Don't trust me. I can't

The game started, only to see my father simply break up. I also split it with all my strength. At this time, I found that my father cut wood so lightly, so I thought, "Hum, my father must have kept that sharp axe for himself." I whispered to my father, "Dad, let's change axes. I like yours. " Dad switched with me without saying anything. My axe is like a duck to water in my father's hand, and I have done better. Before long, my father's share was finished. Look at me, my hands are blistered, I'm so tired that I'm sweating, and my task is still far away.

I must admit defeat, but I must lose clearly. I asked my father, "What is this?" Dad said: "If you don't chop along the grain of wood, you will waste a lot of energy. If you use a scientific method, you will be very labor-saving." Also, if firewood is long, it should be cut, not flat on the ground, but on the top of your head, which will cut it. "I used the method my father said to chop wood, and it was finished in a short time. The scientific method is really useful, so I have to give up.

Although I lost, I am glad that I have gained another life experience, and science is around us.

I had nothing to do today, so I ran downstairs to play.

As soon as I arrived at the clearing, I saw a small ant under the Cycas basin and a dead dragonfly next to it. It looks as if it is going to transport the dead dragonfly back to the cave. But how can it be taken away by a little ant? Judging from the way it turned around, it must be trying to find a way.

After a while, it went back alone. I thought it was going to give up. Who knows, in a short time, a large group of ants emerged from the hole it entered. Oh, I went to find help. This large group of ants carried the dead dragonflies back.

I wanted to play with them, so I thought of a way to block their way with all kinds of small stones. But they seem to have a compass and go in the direction of the hole. So I threw another stone on the dragonfly and all the ants ran away. I thought they would stop there, but they just returned along the same road and continued to carry dragonflies. And with "many hands make light work", they finally carried the dragonfly back to the hole and broke it into pieces and carried it into the hole.

I really don't understand why they have such a strong ability to find their way. With this question, I went to check the relevant books. Finally I found the reason in an encyclopedia. It turns out that ants have a kind of secretion with a unique smell-tracer hormone, which is discharged from the anus. When the patrolling ant finds food, it will disperse these tracer hormones on the way back so that other ants can find it by smelling secretions. In this way, even if their route is temporarily interrupted, they can find their original route by smell.

I am glad that I have gained another kind of knowledge.