Atmospheric pressure usually decreases when humidity increases because moisture in the air displaces heavier nitrogen and oxygen molecules, reducing the weight of the air in the area.
Air mass - huge volume of air that is relatively uniform in temperature and water vapor. 2. But atmosphere has no walls, so heated air expands, becomes less dense. Thus, net result is that pressure actually decreases when heated.
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Answer:
Atmospheric pressure usually decreases when humidity increases because moisture in the air displaces heavier nitrogen and oxygen molecules, reducing the weight of the air in the area.
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Explanation:
Answer:
Air mass - huge volume of air that is relatively uniform in temperature and water vapor. 2. But atmosphere has no walls, so heated air expands, becomes less dense. Thus, net result is that pressure actually decreases when heated.