When it comes to writing, no matter in study, work or life, we are all familiar with it. With the help of writing, we can improve our language organization ability. Then the question is coming, how to write an excellent composition? The following are seven scientific compositions of grade six that I collected for you. Welcome to read them. I hope you will like them. 1

Science is everywhere. Only by exploring and studying with eyes that are good at discovering 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, "What you get on paper is shallow, and you never know it." Wow! Often, the more difficult it is for people to find things, the more hidden a lot of knowledge. Once, when I was drinking mineral water, I wanted to pour the water into the cup because the bottle mouth was too small. 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 down one by one. 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, and I poured the water in the cup into the small bottle, but the sight in front of me stunned me: the water flowed down at once. I'm really puzzled by the second monk Zhang. Why does the water in the small mouth bottle surge for a while, but the water in the cup flows out unimpeded? I have some doubts, is it because of the quality problem 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 the water still swayed 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 the bottle, the air in the bottle is driven out. When the bottle is turned upside down, the water can't receive the air pressure from above, but there is atmospheric pressure outside the bottle mouth. When the water flows out, the outside air will drill into the bottle bit by bit, and the water can only flow out bit by bit, and it will make a' poop-poop' sound when it flows out. " Pouring water out of the bottle is under the pressure of air. So that's it! Science is really amazing. Use your hands and brains 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! Sixth grade scientific composition 2

All the truths in the world are obtained through experiments. The change of matter is a household name, so I made an experiment on this well-known change.

The experimental materials are white sugar, spoons and candles. White sugar and spoons are easy to say, but candles ... I rummaged through everything and finally found one in the corner of the garage. Ready, the experiment begins!

I put the candle in the foam and filled a spoonful of white sugar with a stainless steel spoon. I have consulted the textbook, there is too much white sugar! So, I poured the extra sugar back.

"click-"I pressed the lighter and lit the candle. The flame flickered, and the outer flame and the inner flame could be clearly seen. Loosen the lighter, as the teacher said, I hold the tail tip of the spoon, which is difficult to take, and the spoon shakes with the fire. I finally grasped the balance, and I carefully moved the part of the spoon containing white sugar to the outer flame of the fire. Flames greedily licked the spoon, as if eager to burn it to the end. I kept one hand still and fumbled for a pen and paper with my free hand, ready to record what happened later.

after about two minutes, the white sugar gradually melted and turned into a bowl of sugar water. At the same time, a part of the candle was melted into wax oil by the flame, which flowed down the edge of the candle and solidified halfway, and some dripped on the foam plastic and froze there. The candle was all red.

After a while, my arm was so tired that I had to change my hand. The yellow sugar water keeps bubbling, gradually getting deeper and thicker, becoming brown paste, and even the sweet aroma of white sugar is much lighter, replaced by a burnt smell similar to that of vegetables. The wax oil dripped more and more, and the candle became pitted.

The "sugar paste" keeps bubbling. When my hands were sour, my eyes drifted back, and I was secretly surprised: the white sugar, which was originally as white as jade, turned black from the Yijing! The air is full of pungent burning smell. I poked it with a pen. It's solid! I can't believe my eyes.

I quickly get my spoon back. I think if you bake it for a while, the white sugar will suffer with the spoon. Some words written on my paper are exactly the same as what the teacher said before.

Through this experiment, I fully understand the meaning of physical change and chemical change. I love science more, and I am interested in science. by going up one flight of stairs also loves experiments more.

In my opinion, the truth was born after a hundred question marks, after a hundred experiments, after the love of science, and after ... Composition 3 of Grade Six Science

Less than ten minutes after the morning self-study, we got a good news: in a moment, we will go to the newly-built science inquiry hall on the sixth floor to visit and study. What's new? Are you going to see the model soon? What are you excited about? I thought to myself. But when we got there, I knew that my thoughts were completely wrong.

just before I arrived at the science museum, my eyes were attracted by a bunch of golden satellites, large and small. The golden color seems to indicate the splendid future of our country. The designs are small and exquisite, and each stroke is so meticulous and ingenious that it is easy to remind people of the appearance of satellites. Further inside, there are all kinds of airplane models. Some are big, some are small, some are fat, some are thin, some look very tough, and some look flexible. All kinds of airplane models are dazzling. The teacher explained to us several planes that have a certain position in the world. Among them, my favorite plane model is "歼 歼 歼". It is small and flexible, and it belongs to the hidden series and is not easy to be found by radar.

After entering the science inquiry hall, the teacher asked us to sit down, and we were first tested on a knowledge we had learned. That's the lever ruler, saying that if you want to multiply the number of squares by the number of nuts, put it in the right position. The teacher asked another question: "Everyone knows that alcohol lamps are often used, but if one day, if the cap of the alcohol lamp is gone, what should we do to give you enough to put out the alcohol lamp?" As soon as the words came out, the students talked about it in succession, but in the end, no one gave the correct answer. The science teacher announced that the final answer was that hi pulled the gadget in his hand gently, and the fire on the alcohol lamp was extinguished as soon as he loosened it. It turned out that what Miss Li was holding was a small air cannon, which used the impact of air to extinguish the fire on the alcohol lamp. It's effortless and safe. It's a great way. In fact, this is not what I like best, but a small object with meaning. Miss Li poured water into a bottle, but when the bottle was filled with water, the water suddenly "wow" and all spilled. This little experiment gave people a warning; People should not be complacent, once they are complacent, all their efforts will be wasted.

Back in class, I was still immersed in the joy of small experiments. I thought that boring science could be so interesting. This is really a wonderful trip to the science exploration museum! Sixth grade scientific composition 4

Grandma finally came to my home, and I sat on the sofa watching TV. Suddenly, I heard grandma mumbling, "Well, I'm a little hungry. Let's play for a few minutes!" " So grandma took out the braised pork in a metal bowl and said, "Let's play in the microwave for a few minutes!" " Grandma just wanted to put it in the microwave. Mom saw it and ran to grandma's side, grabbed the metal bowl from grandma's hand and said, "mom, do you know?" Metal bowls can't be played in the microwave oven, otherwise they may explode. " This sentence was heard by me and I thought: it's okay, it's okay! Usually, when my mother is away, I don't mess with things in the microwave oven, otherwise it would be miserable? I would have become a "little black chicken"! I quickly ran to my mother and asked in a low voice, "Why do metal products explode when they are hit in the microwave oven?" "This is because-"mom said solemnly, "putting metal products in the microwave oven, especially larger metal products, is easy to cause microwave reflection and loss of magnetron. Magnetron is a high-power device that emits microwaves in microwave ovens, so it is easy to explode. " "Oh ~" I nodded and said.

"Students, do you know? Metal products can't be heated in the microwave oven! Remember ~ "

The first ray of warm sunshine in the morning shines into my room. With the ringing of an alarm clock and my mother's nagging, I finally got out of bed. After getting dressed, I yawned and walked into the bathroom. After a busy time, I came to the table again.

"wow!" I suddenly lifted my spirits. It turned out that there were just boiled eggs in the pot on the table. Ha ha! It's my favorite! I quickly picked up one, alas! It's hot! I slammed the egg on the table, blowing in my mouth, shaking my left hand and gently peeling it off with my right hand, but the eggshell seemed to be against me and stuck to the protein tightly, so I couldn't peel it off, and I also peeled off pieces of protein.

Mom came out of the kitchen and saw me in such a mess. She picked up the pot and said, "Wait!"

"Mom, what are you doing?" I looked at my mother in disbelief like monk Zhang Er.

I saw my mother take the pot to the sink, turn on the tap and give the eggs a "cool bath". She came out and handed me an egg. I was a little hesitant when I took the egg, so I had to crack it gently. I didn't expect it to be peeled off after two or three times, and the protein inside was smooth and flat. Take a bite, it smells good!

Mom said with a smile, "The newly cooked egg is hot and expanding. When it is washed with cold water, it will contract when it is cold. In this way, the protein and eggshell are separated, and the egg is easy to peel!"

oh! It suddenly dawned on me that it is the truth that heat expands and cold contracts!

Science is hidden everywhere in life. As long as we carefully discover and observe it, it will not only bring convenience to our life, but also increase a lot of knowledge!

When it comes to high-tech, multimedia computers may appear in front of everyone. Yes, this thing is almost indispensable from door to door, and my home is no exception. Before that, please think back to the world's first electronic computer stored in the Smithsonian Museum in Washington, USA, which was called "Eniac" born in 1946.

Now, this favored child is no longer this computer, but the multimedia computer I mentioned earlier. This name is not unfamiliar to everyone. It can be used to watch TV, listen to radio, make phone calls, send faxes, listen to CDs and watch vcd…… ... It has a wide range of functions, and it can also be obtained from five different countries. It can be said that scholars don't go out and know everything in the world! These functions can be regarded as absorbing me tightly. I not only listen to CDs, but also do countless things with this computer. For example, the teacher arranged for us to look up information, and it would be too much trouble to look it up in books. It would take several hours to look it up, but with the multimedia computer, it would be extremely easy, and more abundant information could be found in just a few minutes. Sixth grade scientific composition 5

Nowadays, science and technology are changing with each passing day, and we are in by going up one flight of stairs every day. Then if in the future, I think the ordinary pen used now will certainly be transformed by science and technology.

I think the pen of the future should be a machine, which has three functions. The first function is: convenience, a pen can be changed into many kinds of pens and erasers. There are five buttons on this pen with different words written on them. The first button says "lead", which means a pencil can write erasable words; The word "circle" is written on the second button, which means a ballpoint pen and can write blue words; The word "steel" is written on the third button, which means that the pen can write black, neat and beautiful words; The fourth button says "2B", which means 2B pencil, which can be used to draw beautiful pictures; The fourth button is "rubber", which means rubber, which can erase the words written by pencil; The last button is very special. There are many small buttons on it, which are written with many colors. This button is the color pen button. Each button can switch the original pen to the pressed pen with one click.

The second function is to change the color of the pen and change the mood. The pen tip of this pen can rotate, and each rotation can change the color of the whole pen. It can turn green and relax after finishing homework; Turn red, if you are relaxed during the exam, you can get nervous when you look at red; Turning black can make anxious people calm down. He can also change into other colors to adjust his mood.

the last function is not to be stolen. As long as you use the blue tooth transmitter you gave me when you bought this pen, the pen will stick out four feet and follow the Bluetooth route, and finally the pen will be returned to its original owner.

isn't this future machine pen that I came up with great? But it won't be that cheap. 6

At the moment, our life is very convenient, so what will our life be like after 55 years? Let's enter the future of scientific creation together! In the future, scientists will study with experiments one by one, and their scientific creations will be bought with perseverance and sweat. I had such a dream in my dream

I slept soundly that night, and found that I came to a magical world, where there were various means of transportation, some cars were flying in the sky, and some cars were running very fast with twenty or thirty wheels. While I was admiring these, I was puzzled when a white-haired grandmother came face to face. I was wondering how her grandmother could walk so fast. When I saw her feet, I fully understood, because she wore a pair of wonderful ones. There are five buttons in front of the shoes. Press the red button to walk quickly, the blue button to dive, the orange button to climb trees, the green button to fly, and the yellow button to dance at will. Wow! Look at me. I can't see anything.

I looked here and there. I don't know if I was too happy. I cried out. My mother came over and asked me how I was. I just saw me in bed. It was a science fiction dream. It was wonderful! Think about it. If my dream can come true, I believe the traffic will not be so crowded. People can drive very simply and walk very leisurely. I look forward to my dream coming true. On Saturday, I looked bored at the eggs turned upside down on the table.

I suddenly remembered the composition my teacher asked us to write: My First Scientific Attempt, so I immediately bought a book about scientific experiments and began to read it carefully.

I have prepared many props: eggs, salt, water, a glass and a spoon.

The experiment started. I stared at the steps written in the book and thought: What experiment can eggs do? It's a fragile thing, and I'm looking forward to the completion of the experiment.