Question

match the phrases to explain how air density changes with temperature, water vapor content, and altitude. air density decreases air density increases increasing altitude results decreasing temperature results with increasing temperature with a drop in water vapor content. in a decrease in air den in an increase in air den

Explanation:

Air density is inversely proportional to temperature. As temperature increases, air molecules move faster and spread out, reducing density. Water - vapor is lighter than dry air, so an increase in water - vapor content reduces air density. With increasing altitude, the weight of the air above decreases, leading to lower air density. Decreasing temperature causes air molecules to slow down and come closer together, increasing density.

Answer:

Air density decreases - with increasing temperature, in a decrease in air density with a drop in water vapor content
Air density increases - with a drop in water vapor content, in an increase in air density with decreasing temperature
Increasing altitude results - in a decrease in air density
Decreasing temperature results - in an increase in air density