Thoughts and experience of the second lesson in Tiangong classroom 1
"The starry sky is boundless and there is no end to exploration." Yesterday afternoon, the second lesson of "Tiangong Classroom" started on time. The astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu of Shenzhou XIII once again turned into "space teachers" and held a popular science dialogue with 60 million primary and middle school students in China on the China Space Station, 400 kilometers above the ground.
At present, primary and secondary school students in our city are studying online at home. Under the call of the school, students watched this special space live broadcast in various ways to perceive the mystery of the universe and experience the fun of exploration from the difference between heaven and earth. In order to stimulate the enthusiasm of college students to pursue the "scientific dream" and realize the "aerospace dream", many primary and secondary schools have specially organized and planned related theme activities.
"Classmates, do you know which important stages our space industry in China has gone through?" Yesterday afternoon, all the students of Xinxing Primary School in Heping District watched the second lesson of "Tiangong Classroom" online at home. Before class, Class 4, Grade 5 held a meeting on "The Sea of Stars". Dreaming more than "online class meeting. Mr. Hou Shengjuan, the head teacher, connected Zhang Haijun, an engineer in the R&D Department of China Academy of Space Technology 5 18. Later, Zhang Haijun introduced the experimental content of the second lesson of the upcoming "Tiangong Classroom" in an easy-to-understand language.
"Oil floating on the water is a common scene for us, but in space, because there is no gravity, water and oil cannot be separated. Students, is there any way we can separate water from oil in space? Let's take a look at the space class together. " Before class, Zhang Haijun asked the students this question.
/kloc-at 0/5: 40, the second lesson of "Tiangong Classroom" officially started. Three "space teachers" demonstrated the experiments of space "ice and snow", liquid bridge demonstration, water-oil separation and space parabolic, and described the scientific principles behind the experiments in detail. One magical space phenomenon inspired students' yearning for space and their love for science. Applause and cheers also gathered in front of Hou Shengjuan's screen from many directions again and again.
At the same time, in Tianjin No.7 Middle School, more than 40 students from Grade One Tibetan class also collectively watched the second lesson of "Tiangong Classroom" in the school. They wore national costumes and waved the national flag in their hands, expressing their pride and pride. "China astronauts are amazing! As a teenager in China, I feel extremely honored. I want to study hard and hope to grow into an excellent female astronaut in the future. " Student Tenzin Mu Wang said.
As a physics teacher, AARON Li, the head of the Tibetan class, kept answering students' concerns on the spot. Looking at the staring, serious and excited faces, he knows that the seeds of science have taken root in the hearts of students, and patriotism is stirring in every student's heart.
"As Zhou Jianping, the chief designer of China's manned spaceflight project, said, China's manned spaceflight project will not be satisfied with low-earth orbit. Their dream is to send China people to the moon and Mars, and let China people become the leaders of human space exploration! Students, let us praise the motherland together, and the future belongs to you! " At the end of the activity, the students of the Tibet class sang "Singing the Motherland" with the headmaster Wang Baoqing.
Thoughts and experiences of the second lesson in Tiangong classroom II
In ancient times, people always wanted to send some probes into space. However, the 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, we used the "Long March II rocket" and "Shenzhou XII spacecraft".
The last time we went into space, it cost a lot of money. If we only went up for three or four hours and felt it was not cost-effective, we wanted to build a place where astronauts could live like a hotel, that is, the space station.
According to the plan, Space Station I consists of five parts: the first one is a "manned spaceship", which mainly picks up astronauts; The second one is the "experimental capsule for asking for heaven", 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 "True Experiment Module" and is also used for experiments. The fourth is the "Tianhe core cabin", where the astronauts of our country live; The fifth is the "cargo ship", which is mainly responsible for transporting all kinds of materials. However, this plan has not been completely completed. Now the space station has only two parts: "Tianhe core module" and "cargo spacecraft". It is said that in 2022, the space station will be completed.
Legend has it that there is a Guanghan Palace, which is on the moon, and our space station is floating 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 there is little danger. Astronauts who get 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 set up a space station 400 kilometers away from the earth.
On the earth, everything you throw will fall to the ground, which is Newton's "gravity". If we stand on the flat ground and throw things, we will fall; Then if we "throw" the spacecraft at a very fast speed, the degree of its fall will be consistent with the radian of the earth, and then the spacecraft 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 high.
In the space environment, we can do some experiments that can't be done on earth, such as finding some chips that are more compact than mobile phone chips, or something that can change color in some environments.
There are several small goals for this astronaut to go into space: to live for about three months; Debug 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.
Thoughts and experiences of the second lesson in Tiangong classroom 3
"I am a little bird, and I can't fly high if I want to fly ..." I hummed Zhao Chuan's "I am a little bird" and walked on the road, feeling a little lost. I'm like the little bird in the song. I'm human. How can people fly? I am very depressed at the thought of here. However, I still dream sometimes: my dream is to take a spaceship rocket, fly into space and travel to find a new living planet or other tasks, hehe, that would be great! But it doesn't seem realistic. Shenzhou 5 just took Yang Liwei alone. Can it be my turn? Alas!
I stepped into the house and turned on the TV as usual. I saw the announcer of CCTV news broadcast reporting: "At 9 o'clock this morning, China's Shenzhou VI manned spacecraft was successfully launched at Jiuquan Launch Center, with astronauts Fei Junlong and Nie Haisheng." I watch the news reports about Shenzhou VI carefully almost every day, and get to know the basic situation of Shenzhou VI, the astronauts' food, clothing, housing and transportation, and the difference between Shenzhou VI and Shenzhou V, etc. I am very excited and I feel incredible at the same time. My God, in just two years, China has successfully launched two spaceships!
You see, Shenzhou VI is much more advanced than Shenzhou V, and the number of astronauts alone has doubled. At the same time, Shenzhou VI's flight time has reached 1 15 hours and 32 minutes, which is several times more than Shenzhou V's 2 1 hour. What a big gap! In addition, there is food. Originally, God Five is simple, but God Six has more than 50 kinds. In space, even fish-flavored shredded pork and Kung Pao chicken can be eaten! This can activate my brain cells: yes! According to the current development speed, a spaceship will be launched every two years, and one astronaut will be added at a time. Should a spaceship be able to carry nine astronauts at a time by 2020? I can't help itching, rubbing my hands. I thought to myself, I
Plan, strive to be an astronaut and travel in space!
The necessary conditions for being an astronaut are: superb flying skills, solid theoretical knowledge, strong body, good psychological quality and reaction ability. Superb flying skills, good psychological quality and reaction ability can be cultivated slowly in the future. Now I will exercise regularly to enhance my physique, and at the same time, I must study hard and accumulate knowledge, hoping to become an astronaut when I grow up.
I believe that in the near future, my dream of flying will come true, and I will definitely realize this dream!
Thoughts and experience of the second lesson in Tiangong classroom 4
The stars and the sea did not stop, and the space heroes went out again. At 0: 23 Beijing time 10 16, the Shenzhou XIII manned spacecraft carried three China astronauts, Zhai Zhigang, Wang Yaping and Ye Guangfu, into space, and they became the second batch of "residents" in the space station and the core module of China. The "Tiangong Classroom" broadcast live around the world left a deep impression on people.
From the launch of Shenzhou-1 in 1999 to the first batch of astronauts in China Space Station in June 20021,China people's desire to "settle down" in space is gradually being realized. 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 Aerospace: "The pace of progress has never stopped" and "Great China, Great China people"!
Things change, 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 My Father, which tells the story of parents' ancestors' silent sacrifice and dedication for the construction of new China, exploded on the screen. One of the chapters, Poetry, was a tribute to China's space flight. In the eventful years of early research in the Gobi desert, young couples who were pyrotechnic sculptors and space engineers told their children: "Mom and Dad are people who wrote poems in the sky." After the sacrifice of her husband, the wife propped up her career and family with her weak shoulders. This touching scene made the audience break through the defense. If patriotism is the deepest emotion, then struggle is the longest confession. The figure of devoting herself to the national rejuvenation and the aerospace cause, combined together, is a magnificent poem in the world.
"Being in China, staring at the stars. There is poetry in my heart, and I am at home in the distance. " Speaking of poetry, the name of 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 "Tianwen" ... As an uninterrupted civilization among the four major civilizations in the world, Chinese civilization has countless fairy tales and historical legends, which spark with China's cutting-edge high technology, making China's space flight "traditional" and "modern". Named the manned spaceship "Shenzhou", it is full of beautiful implications.
China people have changed from "visitors" to "tenants" when the Shenzhou 13 manned spacecraft rushed to the universe-the change of "identity" represents the enhancement of national strength, and this sense 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 extend to more far-reaching and unknown fields. China's space flight is moving towards a higher goal, which is the "yearning of the heart" 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"!
Thoughts and experience of the second lesson in Tiangong classroom 5
"Flying dreams never lose weight, and scientific dreams have unlimited tension." Eight years ago, Wang Yaping, a "space teacher", gave a lecture to more than 60 million students in China. Now she has once again embarked on a space trip, and will become the first female astronaut in China and the first female astronaut in China. Looking at the sound, the mysterious and distant deep space is getting closer and closer to us, and beautiful "flying dreams" are becoming a reality.
/kloc-in the early morning of 0/6, Shenzhou XIII was successfully launched, which was less than one month before the successful return of Shenzhou XII manned spacecraft. A new "space travel trio" composed of Zhai Zhigang, Wang Yaping and Ye Guangfu went to China Space Station by manned spacecraft. This mission will achieve a number of "firsts" such as radial rendezvous and docking with the core cabin, transfer from a rescue ship to a formal mission ship, and more space science experiments and technical experiments will be carried out on the basis of the Shenzhou-12 mission.
"Sit on the ground and travel 80,000 miles a day, and look at a thousand rivers in the distance." In 2003, the Shenzhou 5 spacecraft was launched with Yang Liwei at Jiuquan Satellite Launch Center, and it took 2 1 hour and 23 minutes to successfully return to the ground, realizing the dream of flying for the first time for the Chinese nation. /kloc-in the past 0/8 years, there have been seven manned flights, with intervals ranging from years to months. The frequency of "business trips" is faster, the connection is smoother, and the preparation is more calm, demonstrating China's ability to stand on its own feet in science and technology; From "one-day tour" to "seasonal tour", and then to the "in-depth tour" for half a year, the "business trip in space" takes longer, takes bigger, farther and firmer steps, and shows the pride of great power's self-confidence.
From "Two Bombs and One Satellite" and "Chang 'e" asking for the moon, to "Beidou" guiding the way, "Tiangong" range rover, "Tianwen" detecting fire, and then to "Shenzhou" series roaming the sky and "xi he" chasing the sun ... Breakthrough again and again, step by step, the Chinese nation's exploration of space has extended from the moon and Mars to the sun; As far as the eyes of the people of China are concerned, they are looking up at the bright starry sky, searching for dark matter and gravitational waves, and even looking at the deeper unknown areas in space.
"The romance of China astronauts is to turn the myth into reality". Indeed, more and more China space figures in the vast space are composing the romantic feelings of the Chinese nation for the vast stars into realistic poems to explore space. According to the arrangement, the astronauts of Shenzhou XIII will stay in orbit for six months, and China people will spend the Spring Festival in space for the first time. Looking forward to the New Year's Eve, we can hear the blessings of our compatriots from space for the first time.
Thoughts and experience of the second lesson in Tiangong classroom 6
China people have dreamed of flying for thousands of years, from the fairy tale of the Goddess Chang'e flying to the moon, the Cowherd and the Weaver Girl's Queqiao Club, Kuafu's pursuit of the sun to the practical feat of flying thousands of households, and the flying murals of the ladies in Dunhuang Grottoes all show the Chinese nation's yearning for flying into space and roaming the universe.
From 1999 1 1 20th to June/7th, 20021,China * * * successfully launched 12 shenzhou spaceship, which witnessed the great progress of China's manned space program. From the one-day tour of Shenzhou-5 astronaut Yang Liwei to the three-month tour of Shenzhou 12; Since Zhai Zhigang planted the five-star red flag of China people in space, it has proved the rapid development of China's space industry.
1October 16 Shenzhou 13 will also fly into space, and three astronauts, namely Zhai Zhigang, Wang Yaping and Ye Guangfu, will complete some scientific research tasks in the spaceship. Zhai Zhigang is an astronaut of Shenzhou 7, the first person to insert China's national flag into space, with rich experience; Wang Yaping is the space teacher of Shenzhou-10 and the first teacher from China to stand on the world podium. Ye Guangfu is the first time to go into space, and his quality is excellent in all aspects. The three of them will live in space for six months and complete five major missions.
First, carry out key technical tests of space station assembly and construction, such as mechanical arm-assisted cabin transposition and manual teleoperation;
The second is to carry out 2-3 extravehicular activities, install the dual-arm combination adapter and suspension device of large and small manipulator, and prepare for the subsequent space station construction task;
The third is to further verify the health, life and work support technology of astronauts staying in orbit for 6 months;
The fourth is to carry out scientific and technological experiments and applications in the fields of aerospace medicine and microgravity physics, and carry out diversified popular science education activities;
The fifth is to comprehensively assess the functional performance of each system in the project to perform space station tasks and the matching between systems.
This time, Wang Yaping will complete the extravehicular task and become the first female astronaut in China.
Here, I wish the three astronauts peace in space in advance and successfully complete the flying mission.
Thoughts and experience of the second lesson in Tiangong classroom 7
Wang Yaping, the astronaut of Shenzhou 10, gave a lecture in space on June 20th at 10. The first space lecture will be held at that time. According to the plan, female astronaut Wang Yaping will be the keynote speaker, thus becoming the first "space teacher" in China. At that time, local education departments and middle schools will organize watching, and Tiangong No.1 will also become the "highest" platform in China.
1. Small experiment in space teaching
1 Teacher Yaping told us that the special mass measuring instrument in space was made according to Newton's second law. The force on an object is equal to its' mass times its acceleration. In the mass measuring instrument, a spring cam mechanism can generate a constant force, and a speed measuring system can measure the acceleration of the object. According to Newton's Law, the mass of the object can be measured.
2, small ball simple pendulum experiment:
Fix it with a bracket, tie a small ball with a thin thread at the front end of the swing shaft, and then pull the ball up to a certain position to release the hand. As a result, the ball is suspended in the current position and does not swing back and forth like the ground. Why is this? Think about it, everyone. Say your answer!
When Teacher Yaping gave the ball a thrust, the ball actually made a circular motion around the pendulum axis. This is because: as long as we give the ball in weightlessness a small initial velocity, the ball will make a circular motion around the pendulum axis. But on the ground, we have to give the ball a large enough initial velocity to achieve it. Different skies have different physical phenomena. Popular science is everywhere. Pay active attention to it and let us learn more.
3. Gyro experiment:
Suspend the stationary gyro in the air and give it a disturbing force. At this time, the gyro begins to roll and the axial direction has changed greatly. But when the gyro is rotated first and then given a disturbing force, will it still move as before? At this time, the gyro does not roll, but moves forward with shaking. Isn't that interesting? Gyroscope has good axial alignment when it rotates at high speed on the ground, which is also applicable in space. Therefore, many equipments in Tiangong are oriented by gyro combination, and some instruments are made by gyro orientation principle to measure the attitude and orbit of spacecraft.
4. Water film experiment:
Use a metal ring and a water bag, gently put the metal ring into the water bag, and wait for the miracle! Pull out the metal ring slowly, and a large water film will be formed on the metal ring. In weightlessness, ordinary water can also form a beautiful water film, which is difficult to achieve on the ground. Do the students know the reason? Leave it to everyone to think about!
When teacher Yaping gently injected water into the water film, the water film gradually became thicker. With more and more water injected, the water film turned into a shiny water ball. The water film has become a big water polo, a strange phenomenon in space!
5. Water polo experiment:
Inject red liquid into the water polo, and the red will slowly disperse in the water polo, finally forming a big red water polo. Very beautiful! What a wonderful sight!
Question: "Hello, astronaut teacher. Just now, you demonstrated a lot of wonderful phenomena about water. So was this water brought to Tiangong-1 from the ground? Can domestic water in space be recycled? "
Commander Nie Haisheng told everyone that the domestic water used by Tiangong-1 was brought from the ground. It is very important to recycle water in space, but it requires advanced technology and complex equipment. In the short-term flight, disposable water will be used, and in the future, our space station will adopt advanced resource regeneration and recycling technology.
"Hello, astronaut teacher, what's the difference between the scenery you see in space and the ground? Can you see UFOs? Will the stars still twinkle? "
Teacher Yaping replied: "Through the hanging window, we can see the beautiful earth, the sun, the moon and the stars, but so far, we have not seen UFOs. Because we are outside the atmosphere, there is no obstruction and interference from the atmosphere, so the stars we see are exceptionally bright, but they don't flicker. Similarly, because there is no atmospheric barrier, the sky we see is not blue, but deep black. In addition, tell you a wonderful phenomenon, every day we can see 16 sunrise. "
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