weather theoryFAA-published question bank (Private Pilot, 2008)
Every physical process of weather is accompanied by, or is the result of, a
A
movement of air.
B
pressure differential.
C
heat exchange.✓ Correct Answer
Explanation
Every physical weather process, such as evaporation, condensation, convection or radiation cooling, involves or results from an exchange of heat, which PHAK Chapter 12 treats as the driver of weather. Air movement and pressure differences are themselves consequences of uneven heating.
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