"Tiangong Classroom" student feedback 1 "Flying dreams never lose weight, and scientific dreams have unlimited tension." This is a sentence from Wang Yaping, a "space teacher" who taught in space eight years ago. Eight years ago, among the students who attended the lecture, many people had pursued their space dreams and became astronauts. Although I didn't listen to Mr. Wang's lecture eight years ago, I still yearn for the Galaxy Universe in the rocket model in the Science and Technology Museum.
The "Feel Good" team showed us their living and working space in Trina Solar Space Station. Seeing Miss Wang's sleeping cabin with photos of her and her family, as well as her favorite doll, seemed to be in a university dormitory, so vivid and real. This 16 meter space station can see the end of the internal space, but every detail and every screw embodies the wisdom of astronauts. Tailor-made "exercise prescription" to protect the health of astronauts; Intimate small refrigerator, let astronauts eat fresh apples; The reclaimed water system provides sufficient drinking water. The astronaut's life in the space station is so "comfortable", and behind it is the powerful and clever China astronaut. The people of China have been dreaming of flying for thousands of years, from the Goddess Chang'e flying to the moon and Kuafu chasing the sun in fairy tales to the flying murals of thousands of families and beautiful women in Dunhuang Grottoes, all of which show the Chinese nation's yearning for flying into space and the universe. From1999165438+1October 20th, the first shenzhou spaceship was launched. At this point, 13 Shenzhou set sail with China people's space dream. Witnessed the progress of China's manned spaceflight project. From the one-day tour of Shenzhou 5 astronauts to the Shenzhou 12 March tour, and from Zhai Zhigang planting a five-star red flag in space, China's space strength was demonstrated to the world.
Space turn, space cell, buoyancy disappearance, water film tension, water polo optics, effervescent tablet experiment, I couldn't take my eyes off it, shouting magic! After today, I believe that many seeds of space dreams have been quietly buried in our hearts. "In China, looking up at the stars. There is poetry in the heart and home in the distance. " Let's chase our dreams together!
Students' feedback on "Tiangong Classroom" 2 Beijing time 202115: 40 On February 9, the first lesson of "Tiangong Classroom" officially began. After eight years, Chinese astronauts once again taught in space. "Space teachers" Zhai Zhigang, Wang Yaping and Ye Guangfu brought a wonderful space science lesson to the teenagers of China Space Station, which was the first space teaching activity of China Space Station.
During the 60-minute lecture, the astronauts Zhai Zhigang, Wang Yaping and Ye Guang Fu of the Shenzhou 13 flight crew vividly introduced the working and living scenes of the space station, demonstrated the magical phenomena such as cytology experiment, object movement and liquid surface tension in microgravity environment, and explained the scientific principles behind the experiment. During the lecture, astronauts interacted with teachers and students in the ground class in real time through video call.
The whole space teaching activity is broadcast live, with a main classroom on the ground of China Science and Technology Museum and four sub-classrooms in Nanning, Guangxi, Wenchuan, Sichuan, Hong Kong and Macau. * * * About 1, 420 representatives of primary and secondary school students participated in the live activities. This teaching activity is co-sponsored by China Manned Space Engineering Office, Ministry of Education, Ministry of Science and Technology, China Association for Science and Technology and CCTV, and supported by China Science and Technology Museum and related research and experimental units of manned space engineering. "Tiangong Classroom" space teaching activities actively spread manned space knowledge and culture, and continue to carry out various forms and rich contents of space science education.
The three astronauts first showed you the magical phenomenon of circling in space. This ordinary action with zero difficulty coefficient on the ground hides profound physical knowledge in space. The key word of space rotation experiment is angular momentum. Angular momentum is a physical quantity that describes the rotation of an object. This experiment shows that in microgravity environment, astronauts will be in a state of conservation of angular momentum without touching the space station, which is similar to the ideal state. When the astronaut's upper body turns left, according to the principle of conservation of angular momentum, the lower body will turn right. Another action is when the astronauts stretch their bodies. Because the mass is distributed far away from the rotation axis and the moment of inertia is relatively large, the angular velocity is slow, which is to say slowly in layman's terms. When the limbs contract, the moment of inertia is small and the angular velocity will increase. The intuitive feeling is that the speed is getting faster.
Buoyancy is associated with gravity, and there have been scenes in many sci-fi movies: once gravity disappears, buoyancy will be gone, and it will become more difficult for people to swim. Wang Yaping, a space teacher, did the buoyancy disappearance experiment, which illustrated this phenomenon. Buoyancy comes from the pressure difference of liquid at different depths caused by gravity. When gravity disappears, the internal pressure of the liquid remains unchanged and the buoyancy disappears. But it is difficult to make buoyancy disappear on the earth's surface, and this experiment is also difficult to show intuitively. Under the microgravity condition of the space station, the correlation between buoyancy and gravity can be clearly displayed.
When astronauts put a bubble into the water polo, because the buoyancy has disappeared in space, the bubble will not float upward, but stay in the water polo honestly, so the water polo is changed into two parts by the bubble, with air in the middle and water around the bubble. At this time, the whole water polo becomes two lenses, the outer ring becomes a convex lens, so it presents an inverted image, and the inner ring becomes a combination of two concave lenses. At this time, an image of integrity appeared again. So you can see two images in the water polo at the same time, one above the other. First of all, in weightlessness, water droplets will shrink into a water polo close to a perfect sphere under the action of surface tension, while on the ground, it is almost impossible to obtain a perfect water polo due to the influence of gravity. Secondly, this water polo can be regarded as a convex lens. If you stand out of the focal length of this convex lens twice, you will see an inverted real image. Finally, put a bubble in the water polo, because the buoyancy disappears in space, this bubble will not float out, it will stay in it honestly.
In the ground environment, you can see bubbles floating when you put effervescent tablets into water polo. However, in the weightless environment of China Space Station, the bubbles produced by effervescent tablets thrown into the water do not float, but squeeze each other, which will eventually form a very interesting appearance. This water polo will also be supported by bubbles, and the water polo will expand a little.
This time, everyone can intuitively feel the difference between the space environment and the ground environment of the space station. The astronaut's space teaching content is an inspiration for students, and it is also a very important role in this space teaching to stimulate children's curiosity by means of experiments and interaction between heaven and earth. It is not simply instilling knowledge. After reading the contents of these experiments, students can explore what will happen again and try more possible schemes on the ground. Let students understand the deeper things behind this.
Students' Feedback on Tiangong Classroom 3 Yesterday, I watched a lively and wonderful "Cloud Classroom" through CCTV live video, witnessed the first space lecture of China Space Station, and followed the space lecturer Wang Yaping to visit our China Space Station, which opened the mystery for us.
In the first lesson of Tiangong Classroom, I think the most amazing thing is the experiment of effervescent tablets. Teacher Wang Yaping first took out a water bag and demonstrated the process of drinking water in the "Tiangong", which made me feel so interesting. Drinking water is like playing eat small fish and the big fish. I opened my mouth and swallowed the floating water drops. Then the experiment began: I took out a small ring and squeezed some water into it. Suddenly, the water drops became a film and stuck to the small ring like tape, filling it up. Teacher Wang continued to inject water and turned it into a crystal clear water polo. Then, he sucked out small bubbles from the water polo inside and began to inject blue liquid. In an instant, the crystal clear water polo turned into dark blue "soil", and finally he put half an effervescent tablet into the blue "soil". Effervescent tablets explode in the "earth", constantly producing many small bubbles, dancing in it like happy' elves'. The more I think about it, the more amazing I feel! It seems that this "earth" water polo has not been broken by small bubbles.
This class makes us feel the mystery of the universe, experience the fun of exploration and stimulate my curiosity about the science of the universe. It made me secretly swear to study hard, strive to be an astronaut when I grow up, and experience and explore more mysteries in our space station in China.
"Tiangong Classroom" student feedback 4. Through the video, I saw the magical phenomena of space turning, buoyancy disappearance experiment, water film tension experiment and water polo optical experiment, and looked up the information at night to understand the scientific principle behind the experiment. In the live broadcast, I witnessed one magical experiment after another, and also understood many scientific truths, and planted scientific seeds in my heart. Space dream, space power. I want to study hard, strive for the upper reaches, and make contributions to the aerospace industry of the motherland when I grow up!
Astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu gave space lectures at the China Space Station during the live broadcast of students' view in Tiangong No.5 classroom. By watching the live broadcast, the children learned about the living and working environment of astronauts in China Space Station, and felt that astronauts dared to challenge and explore the unknown space spirit. When watching the experiments such as "water film tension experiment", "space turn" and "water polo optical experiment" demonstrated by astronauts in the space station, the students gave out bursts of amazement, from which they felt the mystery of the universe and experienced the fun of scientific exploration.
Feedback from students of Tiangong Classroom 6 Today, we watched the personal lectures of three astronauts on the space station, which gave me a better understanding of the wonderful life in space and shocked me.
The lecturer in space teaching is Wang Yaping, who first popularized an important knowledge-microgravity. In this environment, things that are not "fixed" will float, which is amazing. In this wonderful environment, Mr. Yaping and the "tool man" conducted many experiments, such as walking, turning and water film experiments ... What impressed me most was how to turn in space. I was shocked and amazed by repeated experiments, and at the same time, I also had a lot of doubts. Faced with these doubts, teacher Zhang of CCTV explained this humorously.
Through this successful space lecture, I also learned a lot about space and explored many mysteries of space. I really want to go to space to have a look in person!
Students' Feedback on Tiangong Classroom 7 Today, I watched Tiangong Classroom with excitement and pride. Its content is extremely rich, involving physics, chemistry, biology and other experiments. At present, only China and the United States can independently complete this form of space teaching. To this end, I am proud of China's developed space engineering. Three astronauts introduced the working and living scenes of China Space Station in orbit, and demonstrated the phenomena of cytology experiment, object movement and liquid surface tension in microgravity environment. And communicate with the ground class in real time, spread the knowledge of manned space flight, fully stimulate our exploration of scientific mysteries, and sow a seed of space dream for our young mind. Here, I would like to thank China astronauts for their efforts in popular science education and wish China Aerospace a better future!
Students' Feedback on Tiangong Classroom 8 Today, we watched the Tiangong Classroom of Shenzhou-12 Space Group, and also learned about the internal structure of Tianhe Space Capsule and how to "turn around" and "walk" in space, all of which are related to the conservation of angular momentum. I found the astronauts' turning posture a bit strange, also because of the "angular momentum". When the astronaut is at rest, the angular momentum is zero. But when you turn around, the "angular momentum" changes. In order to keep balance, the lower body must turn in the other direction. More interestingly, without gravity, buoyancy also disappears a lot. Table tennis is put into the water bottle and actually drops to half of the water bottle.
By watching the Tiangong class, we learned a lot of physics laws that sound profound with interesting and simple experiments. Tiangong class is really interesting and can increase a lot of knowledge!