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AIR AND WIND

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    all questions are mandatory
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  • Who needs air?
    All living things
  •  20
  • When you keep glass of water under sun light, what happens to the water after 2 days?
    The water level decreases
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  • Heat of sun changes water into
    Water vapour
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  • What does the air contain?
    Water vapour, dust, germs, smoke, gas.
  •  20
  • Where is air?
    All around us
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  • Vehicles, factories release_______________.
    Smoke
  •  20
  • How can we feel air. Give one example.
    Blowing air on our hand, riding bicycle etc
  •  20
  • Humans takeup________________ gas.
    Oxygen
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  • Plants take up__________________ gas.
    Carbon dioxide
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  • Tiny particles we see when we allow little sunlight to enter a dark room are______
    dust
  •  20
  • How does the air around us gets polluted?
    vehicles, factories, coughing/ sneezing, garbage
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  • We must breathe_________________ air.
    Fresh
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  • We should grow more___________ to keep the air fresh and clean
    plants/ trees
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  • _____________ are tiny living things that make the air around us dirty.
    germs
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  • What happens to wet clothes kept under sunlight?
    Water present in wet clothes get evaporated
  •  20
  • Say any 4 uses of wind.
    breathing, sail boat to sail, wind mills to move, kites to fly, dry clothes etc
  •  20