Home › Part 107 Practice Tests › Aviation Weather Questions › Question 41
What is the standard rate at which temperature normally decreases with altitude in the lower atmosphere?
- A.About 5 degrees C per 100 feet
- B.About 2 degrees C per 1,000 feet
- C.About 1 degree C per 10,000 feet
Correct answer
B. About 2 degrees C per 1,000 feet
Why
The average, or standard, lapse rate is roughly 2 degrees Celsius for each 1,000 feet of altitude gain. Actual conditions vary, and a reversal of this pattern is an inversion.
Source: FAA-G-8082-22 Ch. 5 (Weather Effects) · ACS knowledge area: Aviation Weather Sources and Effects · From the Aviation Weather practice bank (WEA-041).