A little bit of parents take their children, using the principle of salt water and fresh water density is not the same, play the egg suspension, the correct use of disposable paper cup to see who is the fastest to float the egg to the designated position. The parents who won the first place introduced to you the ingenious way to win the championship in private
Salt should be slowly put, put more eggs will not float to the designated position.
There are also gas weightlifters, chopsticks, pulling out paper and other small games on the scene. Through these games, the children understand the pressure, inertia and other scientific knowledge of the atmosphere. Many children play until more than 5 o'clock in the middle of the day before they reluctantly leave.
In recent days, the West decoration station of Xinhua Street community comprehensive service core city in Huadu District held a zero distance festival of science popularization. Many parents brought their children to play games and learn knowledge.
In the presence of the event, the most popular game is simple and strange paper cup boiled water and salted water suspended eggs.
When using paper cup to boil water, why does the paper cup not burn, but the water in the cup boils? The children are very curious. Because the boiling point of water is 100 degrees Celsius, and the cup burning point is higher than this temperature. Social workers explained.