The so-called "makers" are those who dare to think, innovate and fear authority. They don't always follow the rules, but dare to overthrow the routine life, like invention and creation, and are not afraid of fallacies. And our writing innovation interest class is just for these students who love invention and creation.
In my opinion, the real maker doesn't just stay in the lab all day and make a knowledgeable appearance, but can study some seemingly insignificant small problems in a monotonous life, so as to find the fun and sense of accomplishment of innovation. Innovation is not just a slogan, but a product of bold ideas and personal practice again and again. So, in fact, there are many makers around us!
Water Cut, Exploring the Secrets of Seed Growth, Steaming Ice ... In my spare time, I always do some small scientific experiments like this, and sometimes I write down my experimental steps and some feelings afterwards. I feel that I am not only doing experiments, but also being in close contact with nature and exploring the mysteries of science and innovation in the vast universe.
"Too superficial, I don't know anything." Of course, as a qualified maker, it is not enough to know a little written theoretical knowledge. You must create it yourself, so that you can understand the principles and mysteries. Last weekend, my classmates and I jointly designed a portable strong light small desk lamp. Although our knowledge is limited, its circuit is broken and it is easy to leak electricity, but this small desk lamp is the first product we designed together, and its significance is not light to us.
The first person who put forward this interesting idea was my deskmate in my interest class. She is usually a very thoughtful person who once designed a clay sundial herself. At that time, after hearing this idea, we were all very excited and immediately collected materials to implement it. Unfortunately, it's probably because we are too impatient. The result of our first experiment was not as exquisite as we thought: the cover of the desk lamp collapsed and the battery could not be connected.
However, we are not discouraged, but continue to experiment to preserve its advantages and avoid its disadvantages. Finally, we finally worked out a satisfactory plan. We made a simple bracket for the cover of the desk lamp, and then spliced it with various kinds of clay, so that it won't collapse in when it is used. As for the circuit problem, after puzzling, we asked the science teacher to help us plan. We are very satisfied with the result of this experiment. Although this desk lamp is still on and off, it is a precious treasure in our life.
After the design of the desk lamp, our respective innovative notes turned a new page full of brilliance. It seems that we can all see the bright light reflected by it, which is not only the light itself, but also the light full of our efforts and sweat, which is the light of our dreams!
There are many scientists I admire, such as Edison, Newton and Ai En Stein ... Among them, Galileo is my favorite. This is a scientist who taught me how to study hard and work hard.
Galileo's father was a bankrupt aristocrat. Since Galileo came to this world, his family has been extremely poor. In order to earn money to support his family and his wife, his father also plans to earn money to send him to school, hoping that he will become a cloth dealer when he grows up.
After school, Galileo is diligent and studious. He is always the first to raise his hand to answer the teacher's questions. Galileo was particularly interested in machinery. As soon as he saw the machine, he wanted to try it. Whenever a child goes to play, he secretly hides on the other side to study and often makes some small toys on campus. Later, Galileo studied Latin, Greek and philosophy, and Galileo's father gave up the idea of making him a cloth dealer. Galileo likes math, too. His father plans to make him a doctor of medicine when he grows up. However, because his family was poor, Galileo dropped out of school and went home. At home, he studied, invented the pycnometer and wrote a book "The Center of Gravity of Solids", so Pisa University asked him to be a professor of mathematics.
On another occasion, Aristotle said: an object with 10 kg and an object with 1 kg fall from the same place at the same time, and the speed is ten times that of 1 kg. This theory that goes against the laws of nature has become people's protection, because Aristotle once said the theory of "the center of the earth". Galileo proved this theory wrong with his own experiments.
Galileo's contribution deserves my admiration. I will study hard and make greater contributions to my motherland like Galileo when I grow up.
In science class, the teacher gave us an interesting experiment, and I want to practice it myself. I couldn't wait to prepare the experimental materials as soon as I got home.
I went into the kitchen, opened the cupboard, first took out white vinegar and baking soda, and then took out the detergent from the cupboard and put it on the table. Finally, I took out a small glass and a stick. In order to see more clearly and make white vinegar more beautiful, I brought a pen with blue ink.
All the tools were ready and I started the experiment. I chose a glass from the materials and took out a white vinegar bottle. This bottle of white vinegar is still new, with packaging. I carefully cut a small hole in the plastic tightly wrapped around the bottle mouth. With this breakthrough, the package was torn in half. Exposing the bottle cap, I opened it and poured white vinegar into the cup. After half a cup, I stopped pouring and began to drip ink. As soon as I took out my pen, I smelled a smell of white vinegar, which was particularly pungent, like the north wind in winter. Cold and sour, several times more than citric acid. Although lemon will make your teeth sour, it has a fruity smell. And white vinegar, not only does not have the fragrance of fruit, but also mixed with the spicy taste of alcohol, which makes me blind. I thought to myself, "White vinegar is so sour and smelly. It is not easy to do an experiment. " My heart beat a retreat. However, an example of a scientist who tried a thousand times and finally succeeded came to my mind, and my mind was revived.
I cleaned the nib and put it on the rim of the cup. Holding my breath, I slowly squeezed the ink sac down with my hands and squeezed out five drops of blue ink. Five drops of ink drop by drop, sink into the bottom of the cup, quietly, like a blue coral reef. I accidentally touched the cup with my hand and it moved forward a little. The coral reef moved, swayed with the shaking of the water, swayed upward, and "diffused" and gradually dissolved into the water. The water turns blue, like the light blue when the sea meets the sky, with silk in the blue.
I squeezed a few drops of delicious detergent, and bounced off the bottle like a naughty elf, and there was a faint lemon smell all the way. A burst of sweetness suddenly filled the cup, covering up the sour white vinegar and forming a clear film at the junction of vinegar and air. I use a small stick to stir clockwise, and the sound of "Ding Dong" is endless. In a short time, vinegar was covered with foam, and hundreds of small bubbles were colorful and thick like a layer of broken glass slag under the sunlight, like pearls. You can see yourself through the glass. I thought with satisfaction: it should be good to stir it like this.
Then came the most important step-adding baking soda. I put Xiao Su in the spoon in my bag. Baking soda is white, as white as snow. When I am ready, I slowly lift the spoon and hang it at the mouth of the cup. Suddenly, a little baking soda fell into the cup, into the vinegar, making a "zi zi" sound, accompanied by some small bubbles. Then, I poured baking soda into it at once, and there was a "rushing" sound. Caked baking soda fell into the sea of vinegar like a huge iceberg and was swallowed up at the fastest speed. It took only two seconds to reach the bottom of the cup. Soon surrounded by baking soda insoluble in vinegar, the whole iceberg was swallowed up, and the subsequent bubbles rose rapidly like a volcanic eruption, like a fountain spewing spring water, from the original half cup to half cup. "Not enough, not enough!" I poured some more baking soda. This time, baking soda made a big hole in the foam like a waterfall and went straight to white vinegar. I put the stick in and stirred it. Now, like a hornet's nest, the bubble is soaring. I was too surprised to blink for fear of missing something. Through the glass wall, I saw the baking soda deposited at the bottom of the cup melting and bubbling, and the foam had rushed out of the bottle mouth against the foam, which was unstoppable. I am quick-sighted and quick-footed, so I took out a basin and put the cup in it. This dreamy blue foam floated into the basin like fog for a long time, squeezing the stick in the middle. After the "volcanic eruption", the foam receded a few minutes later, and the peace before the experiment was restored. This spectacular sight made people very shocked and happy at the same time-the experiment was successful and it took me a long time to calm down.
What is the secret of "volcanic eruption"? I decided to ask a secret: white vinegar reacts with baking soda to produce carbon dioxide. Although the thermal effect of this reaction itself is almost zero, carbon dioxide increases the surface area of water, makes it evaporate faster and cools it down. Little Suda is sodium bicarbonate. When mixed with vinegar, it will react violently and produce a lot of carbon dioxide. I suddenly realized, picked up a pen and paper and began to record the experiment.
This experiment not only enriches our scientific knowledge, but also makes us understand that as long as we have a pair of eyes that are good at discovering and a heart that dares to explore, we can discover the science in life.
In my mind, there are three explanations for science in grade six. One is science books, the other is science and technology, and the third is science in nature. Let me choose these. They all seem to be right. However, if I had to choose one, I would choose three.
What is science in nature? For example, how do people make airplanes? I think everyone knows. It observes and studies flying animals, such as bees and flies. If we don't observe them, it will take a lot of effort to build an airplane. Now, I think everything is clear. There are many things in nature that people don't know. Like an unsolved mystery. If we humans break one, knowledge will increase and science will progress. So, I also broke one, because I didn't know anything before. It's badly broken.
One day I saw a word, vegetable oil? Where did it come from? Peanut is also a plant. Why is there no oil? I think this principle must be overturned. I took a delicate piece of paper. It says: vegetable oil. It's oil. Let me add fuel to the fire. The oil is slippery. This is the characteristic. Look for it if you have characteristics. I embarked on a journey to find vegetable oil ... Walking, I found a small red bean with a length of 1 cm and a width of 1 cm. I thought to myself: this thing is a plant. Just dissect it and take it out. So, I dissected it. I don't know if I didn't see it, but I was shocked when I saw it. It's slippery inside. I was shocked. Make a fire quickly and put the small beans into the fire. Brush, the fire becomes several times bigger. Although I failed, I was so happy. Because, I finally know. As for peanuts. I also understand that peanut oil is invisible to the naked eye. It's in there. First, let me remind you. You must have a scientific basis to speak.
So to believe in science, only science is truth. Don't trust any gods or ghosts. What is the basis?
Science class is one of my favorite subjects. I hope the bell will ring slowly in every science class. This year's long-awaited "Xiamen Youth Fun Science Competition" finally arrived, and two other students and I took part in the competition with confidence under the leadership of Teacher Fang.
At the entrance of the competition area of the Science and Technology Museum, clusters of primary and secondary school students from all over the city are gathered, waiting for ticket checking with specially selected materials. Under the guidance of the teacher, the contestants reported to the designated competition area in an orderly manner. With the announcement of the referee, the competition began: the contestants began to make model airplanes in an orderly manner according to the usual training steps. Our team cooperated in cutting foam templates, matching components, pasting technology, etc. When fixing the wheels with glue, our group unanimously predicted that the airplane model would not work in the sink, so we decided to fix it again with 502 spare glue, but 502 glue was like a naughty hot child. At first, it stayed in the bottle. Impatient, I directly unscrewed the lid and squeezed it down with the power of the universe. Suddenly the spirit 502 came out to the exit and a big drop flew to the wheel. I looked down with a bang, and it was not an important problem to keep my hand on. What is even more frightening is that the foam board was completely corroded by the high-temperature 502 glue and broke into two pieces. Suddenly, the three of us looked at each other-silly!
"Redo"-we have to face these two words, starting from the original state: scribing, cutting, pasting and assembling ..... But when pasting, the referee's voice came from the microphone, saying that it's time for the game, so students should hurry up! At this time, we are extremely nervous, and I feel that I am sweating all over. Everyone grasped the work in their hands and was forced by time to finish the model airplane in a hurry. However, after being put into the sink, the model airplane stood motionless under the electric drive. Obviously, the model airplane made by our group failed in this model airplane competition! It is obvious that our group got' duck eggs' in the model airplane competition in the morning. Looking at our dejected teacher, he encouraged: "Failure is the mother of success! Don't lose heart, learn a lesson, there is a game in the afternoon, come on! "
After listening to the teacher's words, we raised our heads and United again, striving to make the afternoon project the best and earn back what we lost in the morning. In the afternoon competition, the origami boat carries things, and our group tries to keep the stress area of the paper boat small, so that the heavy objects carried by our paper boat will not overturn. Our group was the first of all primary school groups to finish it, so the referee asked our group to ship things twice. In every transportation process, we dare not take it lightly for fear that the paper boat will fall into the water because of us. Our group achieved good results in this paper boat loading competition.
The one-day science competition is over, but I don't think it's over in my heart. Due to my impatience and mistakes, the main model airplane production of this competition ended in failure in the morning. I feel very guilty and uneasy! But neither the teacher nor the team members blamed me. In the afternoon, we still cooperated and encouraged each other and achieved good results. Therefore, through this competition, I learned a lesson: in the future, no matter in study, examination, competition, life and so on. The most undesirable thing is impatience, because once people are impatient, it is not easy to control their emotions, and unpredictable mistakes or mistakes will occur. I must guard against arrogance and rashness in my future study and life and be a down-to-earth person.
If I were a scientist, I would invent something that would change history.
In the 1930s, I will invent a time machine, which will use the gap in the universe to expand and let me go back to the past, from a few minutes and hours to thousands of years and tens of thousands of years. For example, we can transport the atomic bomb and other weapons to Yuanmingyuan through the time machine, beat the British and French allied forces around, and protect our Chinese treasures, so that China can avoid spending tens of thousands of dollars on Yuanmingyuan cultural relics, China can have one more wonderful garden, and we can have one more national treasure.
If we can adjust the time machine to Jurassic, see the heroic posture of dinosaurs and witness how dinosaurs died out, we can solve this eternal mystery.
If I were a scientist, I would make a three-purpose car that can travel in water, land and air. If you want to go into the sea, press the blue button; If you want to go to heaven, press the white button; If you want to go by land, press the brown button. No matter in the sky, underground or in the sea, you can drive freely and conveniently with a click, without worrying about traffic jams.
If my wish can come true, how wonderful the world will be!
Last week, my mother bought me a book called "Encyclopedia of Juvenile Science". In the evening, we couldn't wait to choose two experiments from them.
The first experiment is a magnifying glass. We first poke a round hole in the middle with a piece of cardboard and scissors, then tear a piece of transparent glue and stick it on the round hole, put a straw in the water bottle to suck some water, and then drop a drop of water from the straw on the transparent glue, and the magnifying glass is ready. We tried it and it really zoomed in. We use it to read the small words on the medicine box, and the words become very big and clear. Dad said that this is the wish of air refraction, and the haha mirror in Children's Palace is also based on this principle.
The second experiment is to make a spinning snake. Draw a spiral shape with a square piece of paper, then cut it along the line with scissors, paint it with bright colors, and put it on its head. When I finished, I lit a candle at the bottom and it began to spin slightly. Because I made the snake too long to spin, I cut it short and put it on the candle. The rotation was a little better, and I felt a little angry, so I cut it short and put it on the stove, and began to spin wildly. Dad said that the scientific reason for this experiment is the rising of hot air.
This book is so interesting that my mother promised to accompany me to do an experiment every night.
Have you tried science in your life? Maybe not, but I did it. Come and have a look!
I found this experiment on TV by accident. In wartime, in order to send information safely without being discovered by the enemy, intelligence workers used a method called "writing secret letters". Seeing this, I am curious. Why can't we see the written words? Better, let me make a scientific attempt!
I took out a science and technology book and found the steps to do the experiment. I dipped some white vinegar with a clean brush, then spread a piece of white paper on the table and wrote a poem on the paper with a brush. The words are dry, and there are no traces of words on the white paper. Then dip a clean brush in the carrot liquid and evenly spread it on the white paper, and the words will appear.
What is the principle? I checked the computer, and the computer showed that the secret of white vinegar secret letter was the natural pigment of carrot. As long as carrot juice is coated on an acid-containing object, it will appear on white paper. I'm especially glad I found the answer.
"It is more valuable to explore the truth than to have it." Einstein said this sentence is really a famous saying. As long as you are a conscientious person in life, have a keen heart and a pair of observant eyes, you can discover scientific mysteries that you never knew.