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Winds Storms an...

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  • Question 1
    1 / -0

    When warm air rises at a place, what happens to the air pressure there?

  • Question 2
    1 / -0

    What is the principle behind the working of hot air balloons?

  • Question 3
    1 / -0

    Where should an exhaust fan in the kitchen window be set up?

  • Question 4
    1 / -0

    On heating the air it _________(expands/contracts) and becomes  _______(less/more) dense.

  • Question 5
    1 / -0

    Hot air balloon rises up in the air because:

  • Question 6
    1 / -0

    Where should you place the air-conditioning unit to cool a room faster?

  • Question 7
    1 / -0

    Hot air rises because:

  • Question 8
    1 / -0

    A balloon is attached to the neck of a boiling tube and placed in a cold bath. Which of the following would be observed in the setup after a while?

  • Question 9
    1 / -0

    The emissions from a burning incense stick are seen to rise up always. Why is it so?

  • Question 10
    1 / -0

    A balloon  is fixed on the mouth of a bottle as shown in the image. What will be observed when the bottle is left in the sun for an hour?

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