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5962302
Atmospheric Pressure
Description
year7 Geography (Weather) Mind Map on Atmospheric Pressure, created by dobby is free on 02/08/2016.
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geography
weather
year7
Mind Map by
dobby is free
, updated more than 1 year ago
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Created by
dobby is free
almost 8 years ago
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Resource summary
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
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