In the troposphere, temperature decreases as altitude increases primarily because Earth's atmosphere is heated upward from the lowest level. Although sunlight passes through the higher altitudes to reach the surface of t... More » Science Earth Science Erosion & Weathering

Air temperature decreases as altitude increases. Air is a mixture of gases, and at higher altitudes, air pressure decreases, which cools any gas. Air pressure on Earth is estimated to be about 14.7 pounds per square inch... More » Science Earth Science

When altitude increases, air temperature decreases. This is because, with an increase in altitude, there is a decrease in air pressure. When air pressure decreases, air cools down. More » Science Earth Science Atmosphere
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