The chicken drinks a little water, and then a little water comes out of the pot, so a pot full of water is enough for the chicken to drink for a day.
Do you know why the water in the pot doesn't flow out?
Think about it carefully, let's do an experiment to verify it!
Mineral water bottle
The glass is bigger than the bottle mouth.
A basin of water
Fill mineral water with water and stand upside down in the glass. Here's a trick. You can buckle the glass on the mineral water bottle first, and then stand upside down, so that the water will not spill.
See if father drinks beer? When the beer is almost full, they will put the beer bottle in the cup so that the beer will not fall behind.
When the mineral water bottle is lifted up a little and a little air is added, a little water will come out and the water level of the cup will be higher.
When the water in the bottle comes out a little, but the air doesn't go in, the air above the bottle becomes larger and the pressure becomes smaller, but the outside atmospheric pressure remains the same, so there is a pressure difference between them. When this pressure difference is equal to the gravity of the water in the bottle, the water will be balanced and will not flow out or flow in.
The water outside drops, some air enters the bottle mouth, and the atmospheric pressure increases, so the water in the bottle can't be filled, and then it flows out. At this time, the bottle mouth was sealed again, and air was not allowed to enter, reaching a balance. Until the water in the bottle runs out.
An interesting little science experiment. Now you can explain how the water feeder works! Go and do the experiment.
By the way, I have compiled 154 simple and interesting scientific experiments, which can be done at home without buying experimental materials. The article is just one of them. You can ask me for it. I also compiled the audio picture book of 1000, and I can share it with you.
I am Wang Hao, an expert in children's science experiments, and I am on WeChat &; QQ(7572320), code: I see it. Focus on children's scientific enlightenment, improve children's practical ability, accompany children to grow up happily in interactive communication, and welcome parents and teachers to communicate!
Teacher Wang Hao's personal blog "Wang Hao", welcome to exchange and learn!