Water vapour in the air - condenses onto surrounding surfaces when the temperature drops.
frost will form on cold surfaces
Dew
The metal skin of the cars is colder than the surrounding air. This allows moisture in the atmosphere to condense onto the surface - which is what we see as dew.
The water vapor in the air goes from a gas state to a liquid state onto the grass.
If the temperature of the ground, grass, and other surfaces is warmer than the dew point of the air that comes in contact with the surfaces, dew will not form. Sometimes this happens when the air is really dry and the dew point is very low.
Water will condense onto surfaces when it is saturated or supersaturated (dew point equal to or above temperature).
DEW
Water droplets condensed from the air, usually at night, onto cool surfaces
Water will condense onto surfaces when it is saturated or supersaturated (dew point equal to or above temperature).
Water vapour in the air - condenses onto surrounding surfaces when the temperature drops.
frost will form on cold surfaces
Dew
dew, due, do
The air near the ground cools to the DEW POINT.
It forms because the air around the grills get so cold that they hit what is called the Dew point for the air. The Dew point is the Temp. at which the water in the air will form on surfaces.
drops of water form on surfaces near the ground Dew/condensate ; see relevant link .