22-10-2012, 12:34 PM
DRIVE A CAR THROUGH WIND ENERGY
DRIVE A CAR.pptx (Size: 422 KB / Downloads: 61)
introduction
Wind is simply air in motion.
An ideal situation for the formation of local wind is an area where land and water meet.
Wind is called a renewable energy source because the wind will blow as long as the sun shines.
History of machines
Over 5,000 years ago, the ancient Egyptians used the wind to sail ships on the Nile River.
Later, people built windmills to grind wheat and other grains.
Wind production
Every year, wind produces only a small amount of the electricity.
One reason wind farms don’t produce more electricity is that they can only run when the wind is blowing at certain speeds.
Most turbines run 18 out of every 24 hours.
Conclusion
Some people believe wind turbines produce a lot of sound
some think turbines affect their view of the landscape.
wind is a clean renewable energy source that produces no air pollution. And wind is free to use.