Page 125 - Science Course 1 (Book 2)
P. 125
Mo9-L4b: How is Air Circulation Created?
Heat transfer
by radiation
Heat transfer Heat transfer
by convection by convection
Heat transfer
by conduction
Stability describes whether circulating air motions
Key Concept will be strong or weak.
How is Air Circulation Created?
When air is unstable, circulating motions are strong,
How are air circulation patterns within the and during stable conditions, circulating motions are
atmosphere created? weak.
During unstable conditions, ground-level air is much
warmer than higher-altitude air.
Stable
Warm
Cool / Cold
Unstable
Cool / Cold
Warm
Conditionally
Stable
Warm
Cool Cool
Warm
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