Temperature and stability · Question 3 of 12
By approximately how much does the temperature decrease per 1 000 ft in the ISA?
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Answer
- B By about 2 °C
Explanation
In the standard atmosphere the temperature decreases by 6.5 °C per 1 000 m, which is about 2 °C per 1 000 ft. 3 °C per 1 000 ft, by contrast, is the dry adiabatic cooling of rising, unsaturated air.