2. Our power point is about wind turbines and how they give us energy.

3. How long have they been used? Wind power has been around as long as sails have been used to propel boats

4. How it works. To make wind power we use wind turbines all so called windmills A wind turbine is a device that converts kinetic energy from the wind into electrical power

5. How are wind turbines are made? wind turbine consists of three basic parts: the tower, the nacelle, and the rotor blades. The tower is either a steel lattice tower similar to electrical towers or a steel tubular tower with an inside ladder to the nacelle.

6. How it helps us today It helps energy come into schools, homes like it helps light come into our houses when we flick a switch it puts energy in that we can charge our phones and other energy needing things so we can say they help us.

7. How does it help the enviroment Wind Turbines Helping the Environment.; Wind Turbines have blades, just like an electric fan, but instead of using electricity to generate wind, the turbines do just the opposite. Wind rotates the blades, which spin a shaft connected to a generator and the movement leads to the generation of electricity. Thus, the kinetic energy of the wind is converted into mechanical energy of the propelling blades, which can then be used to do mechanical work like grinding grains, pumping water etc. or with the use of a generator utilized to produce electricity.

8. Here is some wind turbines

9. BY KEISHA AND LEAH