weather theoryFAA-published sample question (UAG, Aug 2021)
What are the characteristics of stable air?
A
Good visibility and steady precipitation.
B
Poor visibility and steady precipitation.✓ Correct Answer
C
Poor visibility and intermittent precipitation.
Explanation
Stable air resists vertical motion, so it produces stratiform clouds and fog, smooth air, poor visibility from trapped haze and smoke, and steady (continuous) precipitation, as summarized in PHAK Ch. 12. Good visibility and intermittent (showery) precipitation are characteristics of unstable air.
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