Thursday, 1 December 2011

Source of Energy- Wind Energy

Wind Mill
Wind can be used to do work. The kinetic energy of the wind can be changed into other forms of energy, either mechanical energy or electrical energy.
When a boat lifts a sail, it is using wind energy to push it through the water. This is one form of work.
Farmers have been using wind energy for many years to pump water from wells using windmills like the one on the right.
In Holland, windmills have been used for centuries to pump water from low-lying areas.
Wind is also used to turn large grinding stones to grind wheat or corn, just like a water wheel is turned by water power.

wind farm- 3562003Today, the wind is also used to make electricity.
    Once electricity is made by the turbine, the electricity from the entire wind farm is collected together and sent through a transformer. There the voltage is increase to send it long distances over high power lines.

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