Content & Questions Demo:
Air Pressure
Temperature & Air Pressure
The air pressure in the troposphere is strongly affected by temperature. Warm air molecules spread out and the air becomes less dense. This causes the warm air to rise.
Cooler air is more dense, so it is heavier. It sinks, and helps push the warm air up. The circulation that occurs as warm air rises and cool air sinks is called convection. Convection currents create wind. The rising warm air also carries water vapor up into the troposphere. When the air gets up and away from the surface of the earth, it begins to cool. Water vapor in the air also cools, condenses, and becomes liquid water. Convection that occurs due to differences in air pressure helps power the water cycle. |
SELF CHECK
Select all of the TRUE statements