people have used the power of wind for thousands of years

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People have used the power of wind for thousands of years.

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Page 1: People have used the power of wind for thousands of years

People have used the power of wind for thousands of years.

Page 2: People have used the power of wind for thousands of years

Windmills were simple turbines that could produce mechanical energy.

Page 3: People have used the power of wind for thousands of years

Nowadays farmers use windmills to make a small amount of electricity – enough to power a few farm machines.

Page 4: People have used the power of wind for thousands of years

To make enough electricity for lots of people, power companies build ‘wind farms’, with lots of wind turbines.

Page 5: People have used the power of wind for thousands of years
Page 6: People have used the power of wind for thousands of years

Wind farms are built in flat, open areas where the wind blows at high speed.

Page 7: People have used the power of wind for thousands of years

Bigger is better – the bigger the wind turbine, the more wind it reaches and the more electricity it produces.

Page 8: People have used the power of wind for thousands of years

This diagram shows some parts inside a wind turbine:

The wind turns the blades, they turn the turbine. The generator makes electricity and sends this power along the lines.

Page 9: People have used the power of wind for thousands of years

And this video will show you a wind turbine in action.

Page 10: People have used the power of wind for thousands of years

Definitely! Some schools in Europe and in the USA have their own wind farms!

Page 11: People have used the power of wind for thousands of years
Page 12: People have used the power of wind for thousands of years