Transcription of Air Around us W - NCERT
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Air Around us W - NCERT
15 Air Around usWe have learnt in Chapter 9 thatall living things require , have you ever seen air?You might not have seen air, but, surelyyou must have felt its presence in somany ways. You notice it when theleaves of the trees rustle or the clotheshanging on a clothes-line sway. Pagesof an open book begin flutteringwhen the fan is switched on. The movingair makes it possible for you to fly yourkite. Do you remember Activity 3 inChapter 5 in which you separated thesand and sawdust by winnowing?Winnowing is more effective in movingair. You may have noticed that duringstorms the wind blows at a very highspeed.
Air Around us W e have lear nt in Chapter 9 that all living things require air. But, have you ever seen air? You might not have seen air , but, sur ely you must have felt its presence in so many ways. You notice it when the leaves of the trees rustle or the clothes hanging on a clothes-line sway. Pages of an open book begin fluttering
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