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Private Pilot Airplane practice question 58
When warm, moist, stable air flows upslope, it
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Correct answer: A. produces stratus type clouds.
Stable air forced up a slope cools to its dew point but resists vertical development. The result is layered stratus clouds and upslope fog rather than showers.
References
- Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), p. 12-15, Weather Theory · search it in our library
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Question 58 from the FAA document Private Pilot-Airplane (PAR) Sample Questions (U.S. Government work, public domain) · ACS/LSC code PA.I.C.K3f. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.