Air movement driven by pressure differences travels in what direction?

Air movement driven by pressure differences travels in what direction?

• A. From low to high
• B. It does not move
• C. In all directions
• D. From high to low

Answer: (D)

Air moves along the pressure gradient, from higher pressure to lower pressure. This happens because the difference in pressure pushes air molecules toward where the pressure is less, creating flow that continues until the pressures equalize (or other forces balance it). So the natural direction of movement is from high to low pressure. It would not move from low to high, nor stay completely still, nor go in all directions independent of the gradient.

Air moves along the pressure gradient, from higher pressure to lower pressure. This happens because the difference in pressure pushes air molecules toward where the pressure is less, creating flow that continues until the pressures equalize (or other forces balance it). So the natural direction of movement is from high to low pressure. It would not move from low to high, nor stay completely still, nor go in all directions independent of the gradient.