Test yourself: 5 hard theory questions, free Airspace, weather, regs and aerodynamics, FAA-style — instant score, every answer explained. No signup.
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The environmental lapse rate (ELR) is:
A
Always 2°C/1000 ft
B
The actual measured lapse rate at a given time and place
C
The same as the DALR
D
A theoretical constant
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See where you stand: 5 hard questions, instant score, every answer explained.