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#4 Why do we get fog?

Fogged Out!

Come January, the cold sets in and many places in the North are “fogged out”. To top the list of fogged out places is no other but our National Capital, New Delhi! Fog often results in chaos. Flights get canceled, trains get delayed, traffic on the roads comes to a grinding halt and people choose to skip their morning walk to stay in their warm beds.

Image Courtesy: Brocken Inaglory

The dictionary explains fog as little droplets of water in the air close to the Earth’s surface. Somewhat like a low flying cloud!

But why do we get fog? How does this phenomenon happen? 

Explore Response
#4 Answer
TEAM EXPLORE: Fog is somewhat like a cloud that is flying closer to the ground. But why are these clouds flying so low? We know that air contains water vapour. The warmer the air the more water vapour it holds. As the air rises, it cools. The water vapour in the air also cools and forms tiny water droplets. Billions such water droplets together form clouds. Fog too is formed in a similar way. But the air...

Best Response
Master Shamu Bose 14 years.
January 20, 2014
Brilliant
Fog is condensed water vapours in air. When the air near the ground becomes so cool that it cannot hold water droplets in it,fog...




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Answers (4)
Master Manan Verma, 14 years | Posted January 15, 2014
Fog happens when humiditiy reaches so high that air is not able to hold water vapours in it. The vapours cool near the ground and fog is formed.
Master Shamu Bose, 14 years | Posted January 17, 2014
Fog is formed when warm air meets cooler air. Due to this, vapors get cooled and turn into liquid in the form of tiny water droplets. Thus, we see them as clouds close to the ground.
Miss esha arora, 16 years | Posted January 18, 2014
The way that fog is formed is by infrared cooling. Infrared cooling happens due to the change of seasons from summer to fall and winter. During the summer the ground absorbs solar radiation. As air passes over it is made warm and moist. When the seasons change this mass of warm moist air collides with the cooler air that is now prevalent. This causes the water vapor in the air mass to condense quickly and fog is formed.
Master Shamu Bose, 14 years | Posted January 20, 2014
Fog is condensed water vapours in air. When the air near the ground becomes so cool that it cannot hold water droplets in it,fog appears in the form of small clouds close to the ground.


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