The second lesson of "Tiangong Classroom" is about to start. These are the expectations of the teenagers→

　　According to the China Manned Space Engineering Office, the second lesson of the "Tiangong Classroom" will start at 15:40 today (23rd) at the Chinese Space Station. The Shenzhou 13 crew astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu will cooperate with each other to teach .

This is also the third time that Chinese astronauts have given space lectures.

　　What is this lecture about?

Let's take a look at the class schedule: At that time, the astronauts will demonstrate on-orbit the "ice and snow" experiment in space, the liquid bridge demonstration experiment, the water-oil separation experiment, the space parabolic experiment, the introduction and display of space science facilities, and the interaction between heaven and earth. We sincerely invite all walks of life, especially the majority of young people, to simultaneously try to carry out relevant experiments on the ground.

This teaching event will be broadcast live by China Central Radio and Television Station to the world.

star sea boy says

　　As my country has made more and more breakthroughs in the aerospace field, it has also attracted more and more young people to look at the sea of ​​stars.

For the upcoming "Tiangong Classroom", what kind of imagination do teenagers across the country have?

We listen to them.

1

What are you most interested in about the space station?

　　Ye Zi, student of De'ai School in Jiangdong New District, Heyuan City, Guangdong: Space is a state of weightlessness. If you blow a balloon on the earth, it will fall. If you blow the balloon with your mouth in space, will it rise?

　　Zheng Zitao, a student at Shengli School in Huidong County, Huizhou City, Guangdong Province: If the water droplets are in a suspended state in the space station, you can hit the water droplets with a table tennis racket. Will there be a rebound effect?

　　Yu Zaiyuan, a student at Zhejiang Normal University Wuzhou Foreign Language School: I am most interested in the fact that air convection cannot be generated in a microgravity environment, so how do they boil water?

　　Huang Xinyi, a student at the Bancang Experimental School in Zigong, Sichuan: For example, raising small animals in the space station to see if these small animals live in the space station and live on the earth, and they are very energetic.

　　Zeng Shiyi, a student at Dongshan School in Meizhou, Guangdong: I heard that when the space capsule returns to Earth, it uses the return method of drifting, so what is the difference between this and the ordinary return method?

2

If you could get into the space station, what would you most like to do?

　　Zheng Jiaying, a student at Zhejiang Normal University Wuzhou Foreign Language School: I want to experience the space bike the most, because in the last class, teacher Wang Yaping showed us the space bike handstand to exercise our upper body.

And on Earth it is very difficult for us to stand upside down.

　　Cai Jinghan, a student at No. 15 Middle School in Yinchuan, Ningxia: I prefer to draw, so I thought about whether it would be different to draw on the space station, and I could draw those planets in space.

　　Ma Ningmei, a student at No. 15 Middle School in Yinchuan, Ningxia: I want to try to bring the watermelon to see if the watermelon will become bigger or become a pocket watermelon.

In terms of animals, I would like to try to bring the orangutan, because the behavior of the orangutan is very similar to that of humans, whether it will have some unique reactions.

　　Gao Haiyuan, student of De'ai School in Jiangdong New District, Heyuan, Guangdong: I want to test whether the water flowing out of the water gun is in the form of water columns or water droplets, because I saw a video before that the water flows out into water droplets, and then I want to try it at a high speed of the water gun. Will it also become the form of water droplets in the state of ?

　　Ye Kaixin, student of De'ai School in Jiangdong New District, Heyuan, Guangdong: If I have the opportunity, I want to shoot a shot in space. I want to see if the bullet will slow down or stop in space.

3

What experiment would you most like to do on the space station?

　　Cai Jinghan, student of No. 15 Middle School in Yinchuan, Ningxia: The frictional force experiment, I think the frictional force in space should be different.

Because in space, its gravity is different, and there is a balanced relationship between forces.

　　Zheng Jiaying, a student at the Wuzhou Foreign Language School of Zhejiang Normal University: I would most like to use a glass rod to stir the water in the cup. How will the water react?

Because in the last class, we could observe that the surface tension of water is amazing in microgravity.

　　Xu Chunyi, a student from Jiaojiang No. 5 Middle School in Taizhou, Zhejiang: What I want to do most is whether oil and water can be layered normally (like) on earth.

　　Li Mingsheng, a student from Jiaojiang No. 5 Middle School in Taizhou, Zhejiang: The experiment I most want to do is to explore the development of plants in the state of weightlessness. I want to know whether the stems and leaves of plants will be affected or promoted due to the state of weightlessness.