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Explain why, smoke always rises up....

Explain why, smoke always rises up.

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As we know that smoke is the combination of hot air and hot air becomes light weight with respect to cold air. Thus, it always rises up.
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LAKHMIR SINGH & MANJIT KAUR-WINDS, STORMS AND CYCLONES-EXERCISE
  1. Tornado reaches:

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  2. List some effective safety measures for cyclone.

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  3. Explain why, smoke always rises up.

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  4. Would you like to buy a house having windows but no ventilators ?

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  5. How will you help your neighbours in case cyclone approaches your vill...

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  6. Which of the following plays an important role in the early-warning sy...

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  7. Explain why, if you hold a thin strip of paper just below your lips an...

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  8. What conclusion do you get from the observation that if you hold a thi...

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  9. Explain why, when we blow air in the space between two inflated balloo...

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  10. Cyclones cause widespread destruction and loss of life in coastal area...

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  11. Which of the statements given below is correct ? In winter, the wind...

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  12. What planning is required in advance to deal with the situation create...

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  13. What is a tornado ? Describe the damage which can be caused by a torn...

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  14. What is a thunderstrom ? Explain how a thunderstrom is formed. Name tw...

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  15. A violent strom lifts people and cars off the ground and hurls them hu...

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  16. Which of the following phenomenon does no occur in the atmosphere ?

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  17. The end of a cyclone comes quickly if the cyclone :

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  18. Which of the following factor does not contribute to the development o...

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  19. A column of rapidly rotating winds having the appearance of a dark, fu...

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  20. High speed winds are accompanied by :

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