• Question: why does air not fall

    Asked by anon-193465 to Carl on 13 Nov 2018.
    • Photo: Carl Heron

      Carl Heron answered on 13 Nov 2018:

      Hi clone,

      All air particles in the atmosphere are drawn by the downward force of gravity. But the pressure in the air creates an upward force working opposite gravity’s pull. Air density builds to whatever level balances the force of gravity, because at this point gravity isn’t strong enough to pull down a greater number of particles.

      Does that make sense?

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