At what rate does temperature decrease with height in the standard atmosphere?

In the standard atmosphere, the temperature decreases with height at an average rate of about 2°C per 1,000 feet. This gradient, known as the lapse rate, is a fundamental concept in atmospheric science and aviation meteorology. It reflects how, as you ascend in the atmosphere, the air pressure decreases, leading to a reduction in temperature.

This rate represents an idealized condition of the troposphere, the lowest layer of Earth's atmosphere, where weather and most clouds occur. Understanding this lapse rate is essential for pilots and meteorologists, as it affects aircraft performance and weather patterns.

The choices reflect common misunderstandings about the lapse rate, where the other temperatures are either too high or too low compared to the established norm of approximately 2°C. Thus, this rate is used for practical calculations regarding altitude and temperature changes that are critical for flight safety and operations.