What causes the fog on lakes early in the morning?



  1. 0 Votes

    When you see fog above a lake in the morning time it is evaporation. When the sun rises, it causes a dramatic rise in the air temperature. The warm temperature simulates the water molecules on the surface of the lake to start moving around more, and some start to change into water vapor. Since there is more water in the air near the lake then in the air near by, you can see the difference in the moisture content, and see the fog above the lake.

  2. 0 Votes

    Fog is created when the difference in temperature and the dew point (the temperature at which water vapor condenses into liquid droplets at a certain atmospheric pressure) is less than 4 degrees F. So the fog on the lake, like laram said above, forms when water that has evaporated from the lake is condensed enough to form water droplets–also known as clouds. 

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