On the average, for every 1 km increase in altitude in the troposphere, the air temperature_____ .
A) remains constant
B) drops about 6.5°C
C) rises about 6.5°C
D) rises only during the day

Question

On the average, for every 1 km increase in altitude in the troposphere, the air temperature_____  .
A) remains constant
B) drops about 6.5°C
C) rises about 6.5°C
D) rises only during the day

Quizplus · Accepted Answer

This is known as the lapse rate and is a result of the decrease in air pressure and the expansion of air as altitude increases. Therefore, the air temperature drops about 6.5°C per 1 km increase in altitude.

On the Average, for Every 1 Km Increase in Altitude