weather theoryFAA-published question bank (Private Pilot, 2008)
What types of fog depend upon wind in order to exist?
A
Radiation fog and ice fog.
B
Steam fog and ground fog.
C
Advection fog and upslope fog.✓ Correct Answer
Explanation
PHAK Chapter 12 states that advection fog and upslope fog both depend on wind: advection fog needs wind to move moist air over a cooler surface, and upslope fog needs wind to push moist air up sloping terrain. Radiation fog and ground fog form in calm conditions.
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