Test yourself: 5 hard theory questions, free Airspace, weather, regs and aerodynamics, FAA-style — instant score, every answer explained. No signup.
Free testmediumvisibility
Upslope fog forms when:
A
Moist air is forced up rising terrain
B
Air is cooled by radiation at night
C
Warm air advects over cold water
D
Rain evaporates below cloud base
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See where you stand: 5 hard questions, instant score, every answer explained.