Whysky Is Blue
(p.naga prasad)
Why is sky blue Our earthis wrapped in a blanket of gas called atmosphere. The atmosphere which is the air we breath is made up of gases like oxygen,nitrogen,carbondioxide,water vapoour and tinyspeeks of floating dust. When sun light withthis layer the gases split up the white light into its different colours of here different colours- red,orange,yellow,green,blue,indigo and violet the blue is psread about themost and so appears tofill the sky. Where there isno atmosphere,as on themoon, the sky appears to be black. Though the surface of moon maybe brightly lit,there is no get around and tobreak up the passing sunlight onto colours. The black sky,with all stars and planets shining brightly,is what the astronauts see when this craft leave the earth?s layer of gas and move into vacuum of outer space.
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