Zusammenfassung der Ressource
Atmospheric Pressure
- In a low pressure system air rises in a clockwise direction
- If air weighs less than 1013 millibars, it is the low pressure system
- Air expands (becomes lighter) when it is heated
- light air is less dense- it is expanding
- As warm air rises, it will condense and form clouds
- Air that weighs more than 1013 millibars is heavier/denser
- If air weighs more than 1013 millibars, it is the high pressure system
- Air becomes denser as it is cooled
- This air sinks in an anticlockwise direction