Lapse Rate is the rate of decrease of which atmospheric variable with height?

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Prepare for the Endeavor Air Indoctrination Training Test. Study with flashcards and multiple-choice questions, each offering hints and explanations. Get ready for your exam!

Multiple Choice

Lapse Rate is the rate of decrease of which atmospheric variable with height?

Explanation:
Lapse rate describes how temperature changes with altitude. It specifically measures the rate at which temperature decreases as you go higher, so temperature is the variable in question. While pressure, humidity, and wind all vary with height, the lapse rate is defined by how quickly the air cools (temperature) with elevation. In dry air, the rate is about 9.8°C per kilometer; when moisture is involved, condensation lowers the cooling rate to roughly 5–6°C per kilometer, and the environmental lapse rate typically averages around 6.5°C per kilometer.

Lapse rate describes how temperature changes with altitude. It specifically measures the rate at which temperature decreases as you go higher, so temperature is the variable in question. While pressure, humidity, and wind all vary with height, the lapse rate is defined by how quickly the air cools (temperature) with elevation. In dry air, the rate is about 9.8°C per kilometer; when moisture is involved, condensation lowers the cooling rate to roughly 5–6°C per kilometer, and the environmental lapse rate typically averages around 6.5°C per kilometer.

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