How much does atmospheric pressure drop for every 1000 feet that the geographic location rises above sea level?

The atmospheric pressure decreases approximately 0.5 psi for every 1,000 feet of elevation gained above sea level. This decrease is due to the thinning of the air as altitude increases; the higher you go, the less air is above you, leading to reduced atmospheric pressure.

This concept is crucial for various applications, including aviation, firefighting, and any operations that depend on atmospheric pressure readings. Understanding how atmospheric pressure changes with elevation helps drivers and operators anticipate how performance might be affected due to lower air pressure, which can impact engine efficiency and component operation.

While the other options suggest larger drops, they do not accurately reflect the typical rate of pressure change with elevation. Hence, the value of 0.5 psi is a well-established figure in meteorology and related fields, providing the correct benchmark for atmospheric pressure variation concerning elevation.