1) According to the kinetic theory of gases, gases are made up of tiny particles called particles, and they move about randomly at high speed.
2) In an enclosed container, the air particles will collide with one another and with the wall of the container. The force they exert on the wall is air pressure.
3) When air is compressed, the particles collide more frequently, so the air pressure also increases.
4) The atmosphere around us consists of air that exerts pressure on everything on Earth. This is known as atmospheric pressure.
5) Air pressure is lower at high altitudes because air is thinner.
Factors Affecting Air Pressure
- Space of enclosed container:
When space of enclosed container increases, the air pressure will decrease. This is because there will be more space for the air particles to move around. So the air particles will collide less frequently with the walls of the container.
When space of enclosed container decreases, the air pressure will increase. This is because there will be less space for the air particles to move around. So the air particles will collide more frequently with the walls of the container.
2. Temperature of air in an enclosed container:
When the temperature increases, the air pressure will increase. This is because the air particles will move faster and collide more frequently with the walls of the container.
When the temperature decrease, the air pressure will decrease. This is because the air particles will move slower and collide less frequently with the walls of the container.
Always remember that air from a place with higher air pressure will always go to a place with lower air pressure.
There is not much in this chapter that I can explain, you just have to know the applications of air pressure. You should read your textbook to find out more.
No comments:
Post a Comment