Fifth grade science composition 1 What is science? Science is a complex science. Science depends on serious and rigorous observation, bold experiments and wisdom, and it will fail countless times. Only by unremitting exploration can it succeed. Many great inventors and scientists are like this. For example, Edison was like this. Edison finally invented the electric light in order to make people's lives bright, but Edison failed many times to invent the electric light and finally succeeded. But Edison's success depended on unremitting efforts and bold exploration. Successful
For another example, Einstein didn't know how many storms he experienced on the road of science, but Einstein didn't slack off and didn't lose heart. One step at a time, he finally sat on the throne of scientists. I don't know how many hardships they experienced behind this success. It can be said that they worked hard! Therefore, every successful person has paid a high price behind the land. No pains, no gains. This is the true portrayal of the proverb "You can be a master only if you eat hard." Just as we are studying, we should not be complacent; To go up a storey still higher, by going up one flight of stairs is needed. However, the results of this exam are not ideal, and we should not be discouraged. We must make persistent efforts to be winners in learning. In our life, we are inextricably linked with science. Without scientific research, we can't live for a day, and our life is now generally scientific.
For example: battery cars, computers, electric cars, etc., so we should love science, study and study science, so we should study hard, work hard to serve the motherland and be the main force in scientific research.
On Friday afternoon, it was a joint class activity class in our grade. We followed the teacher into the small theater, and our hearts were full of expectations!
The theme of today's lecture is "science in the kitchen". Is there science in the kitchen? Everyone thinks it's strange. The teacher stepped onto the stage and said to everyone, "There is science everywhere around us." Everyone is even weirder. I saw the teacher take out a piece of chocolate and ask everyone, "What if you put a piece of chocolate in the microwave for one minute?" "melt!" The small theater rang with a neat and loud answer. The teacher broke the chocolate into small pieces and put them on the plate, then put them in the microwave oven for one minute. Sure enough, the chocolate melted into "chocolate sauce". The teacher asked everyone to taste it, and the students praised it while enjoying the delicious food. Many students said, "Don't buy chocolate sauce in the future!"
Next, the teacher took out some potato chips and asked, "Do you want to eat potato chips?" "Yes, very much, of course!" Everyone replied noisily. The teacher said, "I can make non-fried natural potato chips with potato chips." The students craned their necks with a grain of salt to see what had happened. I saw the teacher put potato chips into a plate with paper towels and put them in the microwave oven for three minutes. "wow! Potato chips! " Everyone was particularly excited and cheered: "Don't buy potato chips in the future!"
After everyone was excited, the teacher explained the scientific mystery to us, which greatly stimulated the students' interest! When I saw more scientific experiments on the publicity card issued by the teacher, the students couldn't wait to get into the kitchen and practice at once!
I like science very much. I have been ordering Future Scientists and Happy Science since the first grade of primary school. I often read these books, and I have done many small experiments in them, such as: undulating eggs, strange creatures, poisonous vegetable salads, harmless nettles, old fruits ...
One day, while I was having breakfast, I took an egg, peeled it off, accidentally slipped down, bounced it, and then broke it. I am reminded of the experiment "Jumping Eggs" in Future Scientists. So, I asked my grandmother for a big egg, poured 150 ml vinegar from the vinegar bottle into a bowl, took a glass, and started the experiment on my desk. I put the egg into the glass carefully first, hoping it won't break. Then pour the vinegar into the glass, and the whole egg is not eaten. Soon after, the eggs bubbled, and after a while, a layer of skin on the surface disappeared. Put the eggs in this cup of vinegar for two days. Turn it over several times and make sure that the egg sinks to the bottom. If bubbles make the egg rise, hold it down with a spoon. Two days later, I succeeded, and the egg shell was gone, and I bounced up at four or five centimeters. I was very happy!
I was inspired by this experiment: no matter what you do, you should practice more, be careful and be careful again. You can't always rely on your parents and others. Only by working hard on your own can you master the skills of survival and not be eliminated by society. I will use my knowledge to serve the society and the motherland.
I often go to my aunt's house to see my little sister, who is only a few months old and is in trouble.
This weekend, my mother and I went to see which "troublemaker". Hardly had I entered the room when I heard my little sister's loud cry. Her voice was deafening, and her face was as red as pig liver. It turned out that she was going to pee, so I quickly picked up a piece of cloth and rushed over, fearing that she would pee on the bed. Just then, she had already peed half a step away, but the bed was not wet. It turned out that she was wearing a diaper, but it was not wet, but it was only aggravated. I'm puzzled. So I decided to do an experiment.
I tried my best to get a diaper from my aunt. I cut it open with scissors first, and found that it was just some powder and some cotton. I thought that the powder must be the key object, so I poured about 3 grams of powder into a basin of water. Miracle appeared, and the water was "drunk" by the powder, and all of them evolved into an unknown crystal. I was shocked at once. So I checked the computer, and it turned out that the diaper was made of super absorbent resin, which was made of starch and acrylate as the main raw materials. The water absorption is ` 500~ 1000 times of its own weight, so if you wear this underwear, adults won't urinate for a long time, and it's not enough for this underwear to absorb, so you don't have to be afraid that the baby will wet the bed.
Look! This is the science in life. Science can be ordinary or noticeable. You know, many scientists discover science from ordinary things and draw conclusions after deep thinking. Newton, for example, discovered "gravity" from the trivial matter that an apple fell to the ground.
Pay attention to learning everywhere, be good at discovering the science in life, and you will certainly gain a lot!
The word science seems to be far away from us at first sight. In our subconscious, science seems to belong only to authoritative experts who are knowledgeable and knowledgeable, and has nothing to do with us. However, around us, there are actually many scientific phenomena. Science is everywhere, and it is implicit in our lives. There is no shortage of science around, what is lacking is a pair of eyes that are good at discovering science.
I don't know much about the exploitation of resources in the depths of the ocean, the causes of earthquakes, and the laws of volcanic eruptions ... But there are countless small sciences in life, such as the wonderful use of rice washing water, the use of vinegar, and the change of weather.
Static electricity is a scientific phenomenon that I know in my life.
It was a cold winter and a dark night. I was about to go to bed, when I was taking off my sweater, I suddenly heard a "crash" sound, and there was a flickering light. At that time, I didn't know what static electricity was. Suddenly I heard such a strange sound, and I was naturally scared. That night, the night was already deep, and I didn't have time just to find out, so I fell asleep in a daze.
The next morning, I told my mother about the strange thing last night. My mother smiled and said, "That's static electricity." "Static electricity? What is that? " I'm puzzled. "Find out for yourself!" Mom smiled and walked away. I turned on the computer and searched for what static electricity was. The computer is really a good thing, which easily solved my doubts.
It turns out that static electricity is a kind of static charge. In dry winter, in our daily life, we often encounter this phenomenon: when we take off our clothes and sleep at night, we often hear crackling sounds in the dark, accompanied by blue light, which makes people stunned; When you get up in the morning to comb your hair, your hair will often "float". The more you manage it, the more chaotic it will be. When you pull the door handle and turn on the faucet, you will get an electric shock and often make a "bang, bang" sound.
Therefore, static electricity is harmful. Electrostatic sparks can ignite flammable substances and cause explosions. So how to prevent the harm caused by static electricity? The simplest and most reliable way is to ground the equipment with wires, so as to introduce the generated charge into the earth in time. This is the reason why we usually drag a chain that touches the ground after seeing the tanker. Increasing air humidity is also an effective way to prevent static electricity. When the air humidity is high, the charge can be discharged at any time. Of course, static electricity is not all bad. We can make good use of static electricity, such as electrostatic dust removal, electrostatic spraying, electrostatic flocking, electrostatic copying and so on.
I see. I'm so happy. I finally understand what static electricity is all about!
Static electricity is a little science in life. Therefore, science is in our life, depending on whether we will discover, understand and use it with our heart.
If Foshan wants to build a new science museum, I think: the appearance of this science museum must be attractive, and secondly, the projects in the museum should be innovative besides traditional ones.
Let's talk about appearance first. I thought: does it look like a UFO? Like a top? In a word, it can arouse people's curiosity and can't help but want to go in and have a look.
Then, this science museum must have a special planetarium with some high-definition telescopes so that people can look at the distant sky. Even looking at space, looking at the planets and stars in space, observing their appearance, understanding them and enjoying the wonderful landscape there. It's like being there.
There are also biology museum, nature museum and history museum. There are some microscopes in the biology museum, so that people can observe the microorganisms in the microscopes and see what they look like. There are also some simulated fossils and dinosaur models, and the dinosaur models can also do some simple actions and make simulated sounds. There are some insect specimens in it, and next to them, there is an introduction of this insect.
The nature museum should be close to nature, and the scene should be set to look like nature. Models of all kinds of small animals, all kinds of flowers and trees, as well as fresh air and birds and flowers, make people feel like they are in nature. The history museum should "move" history to modern times to let people know about history. For example, the previous stories of the Tang Dynasty, the Qing Dynasty and the Three Kingdoms period were all reflected by movies.
I also hope that everyone in the science museum can experience it personally, such as: electrostatic experiment, biological reaction, floating feeling in spacecraft, tornado, tsunami … and more tools can be made for people to experience it personally.
I think it would be better if the Foshan Science Museum can promote environmental protection, energy conservation and emission reduction at the same time. For example, you can post a notice in the nature museum: green-the source of life; Trees are green, and the earth has a pulse. If you can, you can also set up an environmental protection pavilion. In it, you can make a video of the tragic world of the fantasy future and make people realize the importance of environmental protection.
I think: If Foshan Science Museum can also open a breeding museum, children in cities who seldom see animals and plants can experience the fun of raising animals and plants for themselves, just like "QQ farms and pastures" on the Internet. It can not only arouse children's interest, but also increase their knowledge.
Will the future Foshan Science and Technology Museum be the same as I imagined?
In the second class on Friday, 7 th, Bao Yiming's mother, Teacher Pan, gave us a science lesson entitled "I love silkworm babies".
First of all, Teacher Pan told us how the silkworm baby came out. In the past, when it was a child, it was a small silkworm egg as big as millet. It molts every seven days, that is, it grows up once. Do you know how many times it molts? One * * * is four times. Small silkworm eggs will hatch into a small black silkworm baby in a few days. Then the silkworm baby molts slowly, and every time it molts, it changes a little, the first time it becomes a little white, the second time it becomes a little whiter, and the third time it becomes a little whiter. After molting for four times, the little silkworm baby becomes the kind of white silkworm baby that we often see. Teacher Pan also said that silkworm babies begin to spin silk when they grow up. We'll let them live in cardboard boxes, and then they'll start spinning, wrap themselves inside, and slowly become a big cocoon. Teacher Pan also told us that silk can be used as silk quilt, silk pillow, silk and so on. Oh, let me tell you something. Silkworm baby's poop can be made into a pillow core inside a pillow.
Finally, what makes us happiest is that Mr. Pan also gave each of us a package of baby silkworms and some mulberry leaves to take home.