Comments on the second lesson of Tiangong Classroom 1
I learned a lot after watching the program "Tiangong Classroom".
In 20 13, China astronaut Wang Yaping really gave his first lecture in the sky, but eight years later, today's technology is very different from the past. Moreover, the quantity and quality of cameras have improved this time, which has also caused great pressure on astronauts. And she will hold the camera in her hand, which is no easier than holding it on land.
Teacher Zhang asked us a few questions. In the space station, the cube is sown on six sides. What are the directions of roots and buds? The answer is that the roots spread into the soil and the buds grow back to the planting surface, facing the sun. Because of the gravity of the earth, the roots of plants on the earth grow underground, but in the microgravity environment of space, their roots will grow everywhere, and their roots will bend and grow in the soil.
The second question is, what will happen if the water in the teapot is poured into the cup? The answer is that the water is in the teapot and can't be poured out. In light environment, water will float on it, so it is impossible to pour water.
The third question, can goldfish swim in the open fish tank of the space station? No, because water and fish are separated, and the water will swim for a while in a short time and then separate.
On the mechanical arm outside the cabin, the astronaut holds a small steel ball in one hand and a feather in the other, and throws it in the same direction with the same force in both hands. The predetermined distance is two meters. Who will arrive first? The answer is feathers. In vacuum microgravity, the mass is small, the acceleration is large, and the feathers arrive first.
After that, I learned some wonderful moments of space flight. After that, I visited the "space home" of some astronauts and learned about some equipment in space.
I also learned that on the ground, table tennis floats on the water, while in space, table tennis is immersed in water. On the space station, buoyancy almost disappeared. A water film, after adding water to the water film, put an artificial flower in the water film, and the flower becomes bigger in the air, just like blooming. After continuing to inject water into the water film, the water film will become a water ball. Inject a bubble into the water polo, and a positive image and a negative image are formed in the water polo. Inject the pigment into the water polo, then put the effervescent tablets into the water polo. After that, there will be many bubbles in the water polo, and the water polo looks more beautiful.
After this experiment, I learned a lot from this sky lecture, and I like this sky lecture very much.
Reflections on the second lesson of "Tiangong Classroom"
This lecture was very successful, and it was also my most unforgettable one. At first, I wasn't very interested. I thought I was just teaching on the ground. I thought it must be another boring moment. Unexpectedly, my favorite flying hero, Wang Yaping, prepared his lessons carefully and gave us a thrilling lesson. This time, God X took Wang Yaping, Nie Haisheng and Zhang to heaven. They are the pride of the Chinese nation and an example for the whole world!
During the lecture, Wang Yaping introduced to us the daily necessities and instruments they used in the Tiangong cabin. On the earth, the gravity of objects is measured by scales, spring scales, scales, etc. But here, they skillfully used Newton's second law F=ma to calculate the weight, which also reflected the wisdom of China people. Then I saw the simple pendulum movement, which can't be done on the ground and realized in space. When I saw the ball spinning 360 degrees, I couldn't blink because I was deeply attracted by it. It's incredible! Then Wang Yaping showed us the gyro directionality of the space version. She threw the non-rotating gyro in the air and gently pushed it, and a magical scene appeared: the gyro rolled forward slowly and kept going. When the rotating gyro pushes forward, it rotates steadily, which is different from the previous direction. Powerful and magical. Finally, she made a water film, added a little water, and turned it into a crystal clear water polo. When she squatted down to watch the water polo, the shadow was upside down. This doesn't seem logical at all, but it has been proved. When she added red liquid, the water polo was like a beautiful and flawless ruby.
After reading these experiments, I'm still unfinished. I really learned a lot. I seem interested in life in space. A series of questions come to mind: do they still have fun in it? What does weightlessness feel like? Looking at yourself in the water on the earth, you are positive. Why is it just the opposite when you get there? Is this also the principle of space? ..... These questions have aroused my curiosity, but space is mysterious and no one can understand it. Only by continuous practice and exploration can we make new discoveries. I really want to be an astronaut, go to space to see these magical sights, and maybe even see the sunrise at 16! But this is impossible, because astronauts can't have any scars. So I want to take more classes like this, so that we can feast our eyes and let everyone have a dream of flying.
At the same time, I want to thank our flying hero. Without them, we wouldn't have seen that interesting thing in space. I believe that in the near future, China's heroes will only increase day by day, and China's dream of flying will also exist forever. They will coexist with rivers, the sun and the moon!
I really want to have such an interesting class again!
Experience of the second lesson of "Tiangong Classroom" 3
This afternoon, the teacher took us to watch the live broadcast of Shenzhou 13 Flying. It tells the difference between the classroom and the teacher, the teacher's space home, the magical change of cells, the phenomenon that table tennis is put into the cup, and the tension experiment of water film.
The water film tension experiment impressed me the most. First, drop the water drops of Mr. Wang and Mr. Ye on a sharp object, and a thin water polo is formed on the sharp object. Then, Miss Wang poured water into the water polo, which became more and more bulging, fatter and bigger. Then put in an origami flower folded on the ground. The flowers turn clockwise on the water polo, and the petals slowly open outward, nodding to a ballet dancer and dancing. After two or three turns, all the petals are scattered and become a flower in full bloom in space. The students all showed surprised expressions and screamed "Wow-".
Then, Mr. Wang took a thin needle tube, reached into the big bubble and pushed it twice, and a small bubble came out. At this time, Mr. Wang hid behind the bubble. Looking at the front of the bubble, I found a positive teacher in the small bubble and a negative teacher in the big bubble. I think it's amazing!
The teacher continued to pour water into the bubble. She put in a little dark blue pigment, which slowly spread around and finally filled the whole bubble. Blue bubbles are like our earth.
Finally, the most magical moment came. The teacher put half a yellow effervescent tablet into the water polo. The effervescent tablets didn't move at first. Slowly, the effervescent tablets melted, filled the whole crystal ball and kept bubbling. At this time, the scene is beautiful. The students leaned over and looked into the crystal ball for fear of missing this wonderful moment.
By watching this live broadcast, I understand that science is powerful and interesting, and science can really lead the future.
Reflections on the second lesson of "Tiangong Classroom" 4
Stepping into space is the progress of civilization. China can send astronauts into space with high space technology, which is the confidence of us in China!
In this interactive class, I felt the rapid development of China, our motherland and our yearning for space. I learned about the structure of the space station and the sequence of other manned rockets and cargo rockets accessing the space station, and realized that China dared to explore the mysteries of space, knowing that a day on earth is the first 30 days in the universe! If people don't exercise in outer space and stay in outer space for a long time, their blood will rise and they will die if there is too much blood in their brains.
In class, the teacher showed us the experiment of gravity disappearing in outer space.
Water doesn't float in outer space like the earth. When astronauts drink water in outer space, they should put the water in a bag. One of the experiments is the water film tension experiment. Make a water film first, and then add water to the water film to become a big water balloon. When the pigment is injected into the water polo, the water polo will change into other colors. Finally, put the effervescent tablets in, and the bubbles covered by the effervescent tablets are not fried, but in the water polo. After a while, the water polo was full of bubbles, and the water polo became bigger and bigger, but none of the bubbles in it broke, but none of them left it. This experiment is amazing. Water can be made into a ball without flowing down, and the bubbles emitted by effervescent tablets have not exploded yet. Exercise more in space, or you will get fat when you go back to earth. .......
It's amazing! From this study, I deeply realized China's progress in aviation, and also let me know the structure of rockets and life in space. There are many interesting things in space, waiting for the new generation of overtime workers in our motherland to discover.
Experience of the second lesson of "Tiangong Classroom" 5
China Manned Space Engineering Office announced that in order to give full play to the comprehensive benefits of China Space Station, China's first space science education brand "Tiangong Classroom" will be officially launched, and the first space teaching activity of China Space Station will be broadcast live to the whole world in the near future.
I am very excited to see this news, because I can see a series of wonderful phenomena of object movement in space microgravity environment. This reminds me of the 20 13 space lecture.
In just 40 minutes, the astronauts only used five simple experiments to let everyone know more about the changes of objects and their principles in weightlessness. There are also water film experiments and gyro experiments, which let me know that I can do many incredible things in weightlessness, among which water polo experiment is the one I am most interested in! First, put a ring about the size of a magnifying glass into a drinking tap water bag, and it will become a water film after taking it out. Then, water drops will be continuously injected into it, and slowly the water film will become a crystal clear water ball. If you insert the needle into the water polo on the ground, it goes without saying that the water polo will explode. However, it is a miracle that we can inject ink into the water polo with a needle in space, but the water polo is "unscathed"! This made the audience dumbfounded.
Armstrong, the first man to land on the moon, once said: One small step for me, one giant step for mankind. Although we can only watch space lectures on TV screens thousands of miles away now, I believe that one day we can go to space in person, communicate face to face with lecturers and feel the fun of space.
Experience of the second lesson of "Tiangong Classroom" 6
At that exciting moment, astronauts Zhai Zhigang, Wang Yaping and Ye Guang Fu successively entered the Tianhe core cabin, and the related work will be carried out as planned.
China's high-tech development has advanced by leaps and bounds, Shenzhou VII has been successfully launched, and a major breakthrough has been made in the research and industrialization of 5G Internet. The first world-class high-speed railway between Beijing and Tianjin was opened in China, the first research achievement of human genome sequence was published in China, the major reconstruction project of Beijing Electron-Positron Collider was successfully completed, and Dawning 5000A ranked among the top ten supercomputers in the world.
The dragon dives deep, and Chang 'e explores the moon. China's scientific and technological strength is constantly improving. Major scientific and technological achievements are constantly emerging, and scientific and technological innovation is increasingly active, injecting new vitality into high-quality economic development.
The Millennium dream is realized today. On July 23 last year, Tian Wen-1 was launched from Wenchang Space Launch Site by the Long March 5 Yaosi carrier rocket and successfully entered the scheduled orbit. Tian Wen-1 arrived on Mars in February, 20021,and captured it. In May, 20021year, the orbiter was lowered, the landing patrol was separated from the orbiter, the surface of Mars made a soft landing, and the rover left the landing platform to carry out patrol detection, so as to scientifically detect the surface morphology, soil characteristics, material composition, water ice, atmosphere, ionosphere and magnetic field of Mars, and realize the technological leap in the field of deep space exploration in China [5]. Deep space exploration will promote the all-round development of space science, space technology and space applications, and make greater contributions to serving the overall development of the country and enhancing human welfare.
As of February 3, 20021year, the total flight mileage of Tianwen-1 probe has exceeded 450 million kilometers, which is about 654.38+700 million kilometers away from the earth.
We are standing at the historical intersection of "two hundred years", and the new journey of building a socialist modern country in an all-round way is about to start. The journey is long, only struggle. Through struggle, we walked through Qian Shan. We will continue to struggle, forge ahead and create greater glories!
The astronauts of Shenzhou XIII will stay in orbit for six months as planned. During this half year, the main task is to further verify the key technologies for the construction and operation of the space station. Specifically, it should be further verified with the core cabin, Tianzhou No.2 and Tianzhou No.3.
Strong science and technology, the country is strong. The road to self-confidence is successful, which is praised by China Aerospace. The successful launch of Shenzhou XIII manned spacecraft once again made us feel the strength of our motherland.
Experience of the second lesson of "Tiangong Classroom" 7
In ancient times, people always wanted to launch some detectors into space. However, a single function cannot complete people's exploration of space. So, people began to think of ways: how to let people go to heaven! This time, the "Long March II rocket" and "Shenzhou XII spacecraft" were used.
Last time we went to space, we spent a lot of money. If we only go up for three or four hours and think it is not cost-effective, we want to build a place like a hotel where astronauts can live, that is, the space station.
According to the plan, Space Station 1 consists of five parts: the first part is a "manned spaceship", which mainly carries astronauts; The second one is the "Quest Experiment Module", which is used to do some experiments that cannot be completed on earth; The third is the "dream experiment module", which is similar to the "real experiment module" and is also used for experiments. The fourth is the "Tianhe core cabin", where Chinese astronauts live; The fifth type is "cargo ship", which is mainly responsible for transporting all kinds of materials. However, this plan has not been completely completed. At present, the space station has only two parts: Tianhe core cabin and cargo spaceship. It is said that in 2022, the space station will be completed.
Legend has it that there is a Guanghan Palace. On the moon, our space station floats in space. The sun radiates "energy" to the earth every day, but when we bask in the sun on the earth, the sun is far away from us and the danger is very small. Astronauts who spend too much sun in space may get cancer, so it is stipulated that the space station should not be higher than the earth 1000 km. After considering various factors such as funds and experimental results, scientists finally built a space station 400 kilometers away from the earth.
On the earth, everything you throw will fall to the ground. This is Newton's "gravity". If we stand on the flat ground and throw things, we will fall down; Then if we "throw" the spaceship at a very fast speed, it will fall to the same extent as the radian of the earth, and then the spaceship can fly along the earth. The space station flies very fast, and it can circle the earth in an hour and a half.
Since ancient times, it is impossible for people to see the whole sky on the earth. If you can see clearly from the space station, you can see far, because you stand tall.
In the space environment, we can do some experiments that we can't do on earth, such as finding some chips smaller than mobile phone chips, or things that can change color in some environments.
There are several small goals for astronauts to go into space this time: to live for about three months; Debugging all kinds of equipment; Do some incredible experiments; Get out of the cabin and see the whole picture of space and space station.
China's space station allows us to explore more mysteries of space.
Experience of the second lesson of "Tiangong Classroom" 8
Shenzhou XIII manned spacecraft will be launched in the early morning of June 10. In response, Zhao, a spokesman for the Ministry of Foreign Affairs of China, said on June 5438+05 that less than a month ago, China ushered in the triumph of the Shenzhou 12 manned spacecraft, and in the early morning of June 5438+06, China will once again watch the Shenzhou 13 fly into space with excitement. "This not only vividly interprets China's manned spaceflight spirit, which is particularly hard-working, especially capable of fighting, especially tackling key problems, and especially dedicated, but also reflects the scientific exploration spirit of China people who dare to pursue their dreams, dare to explore and never stop."
At the regular press conference of the Ministry of Foreign Affairs held on the same day, Zhao said that on June 5438+05, the press conference of Shenzhou 13 manned mission was held in Jiuquan Satellite Launch Center, and the spokesman of China's manned spaceflight project introduced the relevant situation. Shenzhou 13 manned mission is the key technology verification stage of China Space Station, and Chang 'e-6 mission is the decisive battle and the final battle at this stage, and it is also the key battle to link the past with the future in the on-orbit construction of the space station.
"What I want to say is that the Shenzhou XIII mission shows China's new efforts and contributions to manned space exploration, the common cause of mankind. China will continue to increase the depth and breadth of international cooperation and exchanges in the field of manned spaceflight, and make positive contributions to mankind's exploration of the mysteries of the universe, the peaceful use of space, and the promotion of building a community of human destiny. " He said.
Zhao said, it can be noticed that compared with Shenzhou 12, there are many differences in the group work arrangement of Shenzhou 13 mission, including that China female astronauts will be stationed in China Space Station for the first time and carry out extravehicular activities, China astronauts will stay in orbit for the first time for six months, and China people will spend the Spring Festival in space for the first time. "We look forward to hearing the blessings from our compatriots in space on New Year's Eve. Let's wish the Shenzhou XIII manned spacecraft a successful launch. "
"Tiangong Classroom" Experience 2 9
Tiangong is a space station independently developed by China. Needless to say, the name "Tiangong" was not casually named. It's like a palace with everything.
The space station is a "space hotel laboratory", where astronauts can stay for a short time and conduct various space research and experiments. Then why build a space station? The space station can test all kinds of technical equipment that may be used for space flight in the future. You can also get a "weightless" environment-a special environment that is difficult to stay on the ground for a long time. However, the cost of going to and from space is quite high. Being able to stay in space for a longer time at a time can reduce costs and improve work efficiency. So such a place with comprehensive functions that astronauts can live for a long time was born.
First of all, introduce the planning of our "palace".
Tianhe core cabin is the bedroom in the palace, mainly for astronauts to live in. Goods and manned spacecraft are used to transport goods and people, just like vehicles on the ground. The candlestick experimental module and the dream experimental module have not been completed yet. They are R&D laboratories in the "Palace" for various space experiments and scientific research.
There are all kinds of imaginable dangers in space, among which the threat comes from the sun as we know it. As we all know, the sun is the foundation of life on earth. It provides endless energy and nourishes the growth of all things. But the rays and gamma rays it releases are very deadly. These two rays can easily penetrate your skin and destroy all cells in your body. Then why can we bask in the sun every day on the earth? That's because the earth's magnetic field and atmosphere will reflect or absorb them. This safety factor must be considered in the site selection of the space station. Internationally, the distance from the ground 1000 km is generally chosen. For the sake of safety, our "Tiangong" is located 400 kilometers above the ground. This can be protected by the earth's magnetic field and atmosphere, killing two birds with one stone.
In ancient times, it was said that the Temple of Heaven was in the clouds, and all kinds of immortals lived there. At present, many astronauts and scientists live in the "Tiangong". They are working hard for the progress of China's space science and technology in high altitude, so that we can no longer rely on foreign technology, and we can really look at the whole universe while overlooking the earth and have a deeper understanding of space.
So our "heavenly palace" is really a veritable heavenly palace! Perhaps this is the origin and beautiful meaning of the name "Tiangong".
The door of "Tiangong" has been opened, and the future can be expected!
Comments on the second lesson of Tiangong Classroom 10
Xinghai didn't stop, and space heroes came out again. At 0: 23 on June 6th, Beijing time 10, Shenzhou XIII manned spacecraft carried three astronauts from China into space, namely Zhai Zhigang, Wang Yaping and Ye Guangfu, who became the second batch of "residents" of the space station and the core module of China. The live broadcast of the Tiangong classroom left a deep impression on people.
From the launch of Shenzhou-1 in 1999 to the launch of the first astronauts of China Space Station in June 20021,China people's desire to "settle down" in space is being realized step by step. Over the past 22 years, we have witnessed the history of China's manned space flight from weak to strong, and netizens on social media have also praised China's space flight: "The pace of progress has never stopped" and "Great China, Great China people"!
Things change, and years are like poetry. Every launch, flight and transcendence of China space show the world our space journey from scratch, from existence to excellence, and from earth to space. This process seems to be an understatement, but the real journey is unforgettable. During the National Day, the film My Father, which tells the story of parents and grandparents' silent sacrifice and dedication to the construction of new China, exploded on the screen. One chapter, Poetry, is a tribute to China's space flight. In the eventful autumn of early research in the Gobi Desert, young couples who are fireworks sculptors and space engineers told their children: "Mom and Dad are people who write poems in the sky." After her husband died, her wife propped up her career and family with weak shoulders. This touching scene made the audience break through the defense line. If patriotism is the deepest emotion, then struggle is the longest confession. The figures dedicated to national rejuvenation and the aerospace industry, together, are a magnificent human poem.
"In China, looking up at the stars. There is poetry in the heart and home in the distance. " Speaking of poetry, the name China Aerospace has the romantic connotation of China people. The lunar exploration project is called "Chang 'e", the lunar rover is called "Jade Rabbit", the global positioning system is called "Beidou", the space station is called "Tiangong", and the Mars probe is called "Tian Wen" ... As an uninterrupted civilization among the four major civilizations in the world, Chinese civilization has countless fairy tales and historical legends, which sparks with China's cutting-edge high technology, making China's space flight both "traditional" and "modern". Named the manned spaceship "Shenzhou" is full of beautiful meanings.
This year marks the100th anniversary of the founding of China's * * * production party, and also the 65th anniversary of the establishment of China's space industry. China people changed from "tourists" to "tenants" when the Shenzhou 13 manned spacecraft rushed to the universe-the change of "identity" represents the enhancement of national strength, and this kind of national pride arises spontaneously, which should be remembered in the hearts of every Chinese son and daughter. This space lecture is not only full of creativity, but also means that the legend of China's space flight will be extended to more profound and unknown fields. China's space flight is moving towards a higher goal, which is the "heart yearning" for the boundless space. I believe that this poetic confession in the name of the country will eventually condense into a common aspiration of "struggle, Chinese children"!
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