Class 7 Physics Winds, Storms and Cyclones Wind

Wind

Moving air is called Wind.

  • Since air is a mixture of gases, wind is the flow of gases on a large scale.
  • Winds are caused by heating difference between different parts of the world and the movement of the earth.
  • Winds can be of classified on the basis of:
    • Duration: Long and Short
    • Strength: High, medium and low
    • Speed: Slow and Fast
  • High strength winds for longer duration, like cyclone or hurricanes, may cause hazardous effects.

 

  • Applications of wind include Windmills (to generate electricity), fan, flying kite, Hair Dryer etc.

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