What describes the movement of air from high pressure areas to low pressure?

• A. Humidity
• B. Precipitation
• C. Wind
• D. Condensation

Answer: (C)

Air moves from high-pressure areas to low-pressure areas because of the pressure gradient force, and that movement is what we call wind. When there’s a pressure difference, air naturally flows from stronger (high) pressure toward weaker (low) pressure in an attempt to balance it out, so you feel wind as the air streams around. Humidity, condensation, and precipitation are all about moisture in the air or changes of water between gas and liquid/solid, not the act of air moving from one pressure region to another. Humidity is the amount of water vapor present; condensation is water vapor turning into liquid; precipitation is water that falls as rain, snow, etc. So the phenomenon that best describes the movement caused by pressure differences is wind.