Sixth grade scientific composition

In life, work and study, we often see the figure of composition. The composition must focus on the theme and elaborate on the same theme. Don't ramble, the theme is lax or even without a theme. How to write a composition to avoid stepping on thunder? The following are nine sixth-grade scientific compositions that I compiled for you. Welcome to share.

1 Science is everywhere. Only by exploring and studying with discerning eyes can we discover the mystery. Only with hard-working hands, to practice and verify, can we know the truth contained in it. As the saying goes, "You never know what you get on paper." Wow! Often the more difficult things people find, the more they hide a lot of knowledge. Once I drank mineral water, because the bottle mouth was too small, I wanted to pour the water into the cup. When I poured it into another cup, I was surprised to find that the water in the bottle could not be poured out at once, but leaked drop by drop. The amount of water is sometimes fierce and weak, sometimes big and sometimes small, and it will make the bottle sway. This phenomenon aroused my curiosity. I poured the water from the cup into a small bottle, but the sight in front of me stunned me: the water flowed down at once. The second monk Zhang really puzzled me. Why does the water in the small bottle surge for a while, but the water in the cup flows out unimpeded? I'm a little confused. Is it because of the quality of the bottle? I took another small bottle, filled it with water, and poured it into the cup, but the experimental results almost made me cry out-the water was still pouring down, but the water in the cup could still flow down smoothly. I tried to seep the water down bit by bit, but it still came out. What on earth prevented the water in the bottle from flowing out at once? I asked my mother. "Ha ha, we all know that when water is poured into a bottle, the air in the bottle is driven out. When the bottle is turned upside down, the water can't accept the air pressure on it, but there is atmospheric pressure outside the bottle mouth. When the water comes out, the outside air will drill into the bottle bit by bit, and the water can only flow out bit by bit, and when it comes out, it will make a' poof' sound. " Pour water out of the bottle under the pressure of air. I see! Science is really amazing. Use your head more, and the answer is right in front of you. As the saying goes, "what you get on paper is shallow, and you never know how to do it." Wow!

The so-called "makers" are those who boldly conceive, dare to innovate and are not afraid of 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!

My ideal is to be a scientist, to benefit mankind, to create our own national weapons, to defend our country, to make environmentally friendly cars, and to protect the environment, the earth and nature.

If I become a scientist, I will create a house. Although its appearance is not very good, it has these strange functions. If it can resist the heat when it is hot in summer and the cold when it is cold in winter, it also has the function of defense, which can ensure that you will not be submerged in floods and storms and will not be hurt when a typhoon comes.

I will also make an eco-friendly car. Unlike a solar car, it can only be started by sunlight. It uses carbon dioxide exhaled by people as fuel. It can be started by inhaling carbon dioxide exhaled by people into the engine, and the air is exhausted. This kind of car really kills two birds with one stone!

In addition to these inventions, I also have a great invention. That's an ocean insulation suit and an ocean insulation spaceship.

First of all, let me talk about space thermal insulation clothing! Space thermal insulation suits can allow astronauts to observe at 3 million degrees for ten hours, enabling astronauts to observe the sun at close range. Space heat-insulated ships, like heat-insulated clothing, have the function of resisting high temperature. It can send astronauts to the side of the sun, so that astronauts can avoid walking so much.

If I become a scientist, I will certainly create a beautiful life and high-tech products for mankind.

I have a dream, that is to be a scientist and make contributions to mankind.

If one day: my name will appear in the Guinness Book of World Records and the Nobel Prize, it is because I established the world's first immigration base under the sea, which completely solved the problem of hypoxia under the sea.

Due to the increasing population, the earth can no longer bear the total number of human beings. In the field of science, scientists put forward the idea of immigration. Imagine building an immigration base on Mars, but without oxygen and gravity. At this time, some people said that they could invent a pill that could breathe on Mars and stay indoors. ...

However, the invention of this pill is very difficult and impossible to complete. It takes a lot of manpower and financial resources to build rockets. After careful consideration, I came up with a good idea: we can build an immigration base on the undeveloped seabed. Fish genes and human genes were extracted and made into pills. After taking this pill, people can swim freely and breathe freely in the water. When they need to go out, they just need to put on frogman's frog shoes and tights. The vehicle is a domestic submarine. This kind of submarine walks without any bubbles, just like floating, as long as there is water, it can be started without any fuel. The house is waterproof so that you won't be affected at home.

If one day, people all over the world will feel the progress and greatness of science.

A bad thing happened today. I accidentally dropped the book into the water. I quickly fished it up, but it was too late. The book had become a "drowned rat". I put the book in the sun to dry sadly, and it wrinkled when it dried.

I went to ask my mother what to do, and my mother said, "put it in the refrigerator!" " Water will form ice below 0 degrees Celsius, and the ice will directly evaporate into water vapor, so the book can be restored. ""Is this true? "I think, finally, I tried to put the book in the freezer of the refrigerator.

A few days later, I opened the refrigerator, and the book had turned into ice, and all around it was frozen, but the book was still flat and there was no wrinkle at all. A few days later, I opened the refrigerator again, and the book was still frozen, but it was dry and kept flat a few days ago. In the later days, the area of ice became smaller and smaller, and finally it all dried up.

I am happy to dance with Pingben, which is really a good way! I'm not afraid of books getting wet anymore.

In fact, there are many sciences in life. As long as you are willing to use your head, the method must be much more difficult.

In my impression, there are three explanations for the composition of 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?

Sixth grade science composition 7 had a science class during the day and was very interested. In the evening, when I got home, I did an experiment called "underwater volcano".

The materials needed for the experiment are: a small bottle, a big glass jar filled with cold water, a string and a few drops of red ink.

The experimental method is very simple. The first step is to wrap a string around the neck of a small bottle.

However, what should I do if the vial is unbalanced at this time? You can wrap another rope around the bottleneck. This way, the eldest son can keep balance with the ropes on both sides of the bottle mouth. Step 2: Fill the vial with hot water. After filling, drop a few drops of prepared red ink into the vial. Step 3, slowly put the vial into a large glass jar filled with cold water and put it at the bottom of the jar. At this point, the steps of the whole experiment are completed.

Next, let's see what's new. In less than five minutes, I was surprised to find that the red water in the small bottle gave off a red "flame" like a volcano, forming a wonderful "volcano in water" phenomenon.

Through the experiment, I understand a scientific truth, that is, the law of "heat is light and cold is heavy", that is, the density of hot water is small and the density of cold water is large. After this experiment, I also love science more.

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.

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 scented detergent and bounced off the bottle like a naughty elf, with 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.