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Winds, Storms and Cyclones — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceWinds, Storms and Cyclones5 Marks
Question
Explain wind storms and cyclones along with their effects?
✓

Answer

A windstorm is just a storm with high winds or violent but with little or no rain. The main effects of tropical cyclones include heavy rain, strong wind, large storm surges at landfall, and tornadoes. The destruction from a tropical cyclone depends mainly on its intensity, its size, and its location. Severe tropical cyclones are responsible for large number of causalities and considerable damage to property and agricultural crop. The destruction is confined to the coastal districts and the maximum destruction being within 100km from the centre of the cyclone and on the right side of the storm track.
Principal dangers from cyclones are:
  • Very strong winds.
  • Torrential rain.
  • High storm tides.
In case cyclone approaches our village or town, we can help our neighbours in following way:
  • We should not ignore the warnings issued by the meteorological department through $TV,$ radio, or newspapers.
  • We should make necessary arrangements to shift the essential household goods, domestic animals and vehicles, etc. to safer places;
  • Avoid driving on roads through standing water, as floods may have damaged the roads; and keep ready the phone numbers of all emergency services like police, fire brigade, and medical centres.
  • Do not drink water, that could be contaminated. Always store drinking water for emergencies.
  • Do not touch wet switches and fallen power lines.
  • Do not go out just for the sake of fun.
  • Do not pressurise the rescue force by making undue demands.
  • Cooperate and help your neighbours and friends.
With help of satellites and radars, Cyclone alert or Cyclone watch is issued $48$ hours in advance of any expected storm and a Cyclone warning is issued $24$ hrs in advance. The message is broadcast every hour or half hour when a cyclone is nearer the coast. We should not ignore the warnings issued by the meteorological department through $TV,$ radio, or newspapers. We should make necessary arrangements to shift the essential household goods, domestic animals and vehicles, etc. to safer places.

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