1. In the spherical flame experiment, Liu Yang threw a small steel ball into the flame, and the flame was obviously blue. As the small steel ball moves to the center of the flame, the color of the flame gradually turns yellow. This is because the small steel balls enter the flame, fully mix with oxygen, and burn to produce bright yellow flame.
2. In the wonderful table tennis experiment, Cai put the table tennis into the water polo, and the table tennis kept spinning in the water polo. Amazingly, table tennis doesn't move with the current.
3. In the experiment of conservation of momentum, I cooperated with Cai to pull a car to turn and accelerate in reverse during space flight. When the cart is accelerated in the opposite direction, the rear of the cart will shift to one side with the inertial force, and Cai will also pull the rear of the cart in the opposite direction to make up for the speed. The car finally drove in the direction of Cai.
4. See the experiment of gyroscope. Liu Yang picked up a gyroscope, spun it and released it. At this time, the gyroscope did not rotate as fast as it did on the ground and then stopped, but continued to rotate and slowly moved in one direction.
Relevant information of Tiangong classroom
1. Tiangong classroom background: Tiangong is the core component of China Space Station and an important milestone in China's space industry. In order to make use of the educational potential of this space laboratory, China National Space Administration launched the "Tiangong Classroom" project on 20 1 1.
2. Educational purpose: Tiangong classroom aims to combine space science with education, impart space knowledge to students and the public through space experiments and teaching activities, and encourage the younger generation to have a strong interest in science and technology. The goal of this project is to improve scientific literacy and train future scientists and engineers.
3. Classroom content: Tiangong classroom includes various educational activities, such as space experiments, scientific experiments, video conferences and lectures. The topics of these activities cover space life, astronauts' daily work, laboratory operation and so on. Through these practical experiences, students can better understand space science and technology.
4. Audience: The audience of Tiangong Classroom includes not only students, but also educators, popular science institutions, media and the public. The project spread space science knowledge to a wider audience through educational activities at different levels, which promoted the popularization of space science and the development of science education.