weather theoryFAA-published question bank (Private Pilot, 2008)
What are the processes by which moisture is added to unsaturated air?
A
Evaporation and sublimation.✓ Correct Answer
B
Heating and condensation.
C
Supersaturation and evaporation.
Explanation
Moisture is added to unsaturated air by evaporation (liquid to vapor) and sublimation (ice directly to vapor), as PHAK Chapter 12 describes. Condensation removes vapor from the air, and supersaturation is a state, not a process that adds moisture.
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