If there is gravity why are the clouds in the sky?

22 Answers

  • 4 months ago

    A molecule of H2O is lighter than a molecule of O2 or N2.

    But the atmosphere is colder higher up.

    And when the molecules of H2O get up there, they condense out in the cold.

  • Jim
    Lv 7
    4 months ago

    waxing poetic:

    Clouds in the sky are like fish in the sea,

    One floats where one is balanced.

  • 4 months ago

    Because they have buoyancy In the atmosphere

    Just like Helium Balloons, they are less dense than air

  • 4 months ago

    And what about the birds and the bees?

    And the flowers and the trees?

    And the moon up above?

    And a thing called love?

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  • 4 months ago

    Clouds are essentially areas where water vapor has come out of solution with the air; If you've ever walked through fog, you know it can be quite damp.  Clouds consist of areas that water is dissolved into the air, and comes out of solution, constantly.  Rising currents of air can also keep clouds elevated, and when the air can no longer support the amount of moisture there is - we get rain. 

  • 4 months ago

    Because the water vapour in them is buoyed up by the atmosphere, in the same way as wood floats on water.

  • 4 months ago

    Question should be asked in meteorology (weather).

    Clouds are the result of updrafts. As air rises, pressure on it gets lower. Same gas, lower pressure = the air cools.  At some point, the humid rising air reaches its dew point and water vapor it contains turns to tiny droplets.

    The droplets should fall down (gravity) however the up-rising air entrains the droplets upwards.

    At the dew-point level (the cloud base) they are replaced by new droplets precipitating from the saturated air that keeps rising.

    As long as the updraft keeps up, gravity pulls the droplets down slower than the air pushes them back up. The cloud stays up.

  • Clive
    Lv 7
    4 months ago

    Because the pull of gravity isn't enough to pull the tiny droplets of water they consist of down to the ground.  If there were no gravity, they wouldn't even stay where they were and float off into space.  You might just as well ask why all the air isn't at ground level.

  • Matt
    Lv 5
    4 months ago

    The rest of physics. Clouds are large clusters of water vapour clinging together (sometimes with other airborn pollutants from geavy machine/factory exhausts) in gaseous form. It has different desnsity and weigh then air closer to ground level, so it raises to an appropriate level.

    Ever put liquids of different thicness into a clear glass? Same effect = heavy sinks, loose/light rises

  • 4 months ago

    Clouds weigh less than the atmosphere.

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