Transcription of Air - NCERT
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Air - NCERT
Our earth is surrounded by a huge blanket of aircalled atmosphere. All living beings on this earthdepend on the atmosphere for their survival. Itprovides us the air we breathe and protects us fromthe harmful effects of the sun s rays. Without thisblanket of protection, we would be baked alive by theheat of the sun during day and get frozen duringnight. So it is this mass of air that has made thetemperature on the earth OF THE ATMOSPHEREDo you know that the air we take in while breathing isactually a mixture of many gases? Nitrogen and oxygenare two gases which make up the bulk of theatmosphere.
trap the warm air and thus raise the temperature of the cities. Air Pressure You will be surprised to know that air above us pr esses us with a gr eat for ce on our bodies. However , we don’t even feel it. This is because the air presses us from all directions and our body exerts a counter pressure. Air pressure is defined as the pressure ...
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