You may have noticed dew on leaves of grass or metal surfaces like iron grills and gates on a cold winter morning. Is this due to condensation? Why can't we see this happening on hot summer mornings?
Answers
Answer:
1. What is dew
Ans : When the surface of the Earth gets cooled during the night and it cools the near atmosphere. This causes the water vapor to condense and So the condensed droplets clings onto the cold surfaces on the Earth.
2. Is this due to condensation
Ans: Yes, Dew is formed due to the condensation of water vapor into dew because of the cold atmosphere.
The critical point at which condensation begins is called dew point.
Extra Facts
Atmosphere should reach the saturation level ( The stage at which the atmosphere is fully saturated with water is termed saturation level ) for condensation to begin.
Forms Of Condensation Are
Frost
Cloud
Mist / Fog
Dew
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Dew
When the surface of the Earth gets cooled during the night and it cools the near atmosphere. This causes the water vapors to condense and the condensed droplets clings onto the cold surfaces on the Earth. Eg: You might have seen dew drops clinging onto the leaves in the early morning.
Frost
As you know there are places on Earth where the temperature falls below 0 degree Celsius. Instead of dew, tiny ice crystals are formed in such places. This form of condensation is known as frost.
Mist / Fog
The condensed tiny droplets of water formed by the cooling of air remains suspended in the atmosphere itself. They can be very well described as clouds close to the Earth surface. Fog or mist is the result of condensation around the minute dust particle in the lower atmosphere. This may obstruct visibility. If the range of visibility is less than one kilometer, It is fog If the range of visibility is more than one kilometer, it is called mist. The airports in North India gets temporarily closed during winter due to dense fog.
Cloud
Clouds are formed by the condensation of water vapor around the fine dust particles in the upper atmosphere