1. Tidal power By Bobby Harry and Jon

2. Why we are doing this project Problem- fossil fuels pollute the air, create global warming, cost more and more and will run out in from 5-15 years. Question- are there other ways to power our world?

3. Extra facts The largest tidal power station is in Europe it was built in 1996. A tidal only be used 10 hours a day because of tides.

4. Location Most of the tidal bridges are in Yemen, Europe. Because there is a lot of water around Yemen.

5. Advantages Once its built its free. Doesn’t produce waste. It needs no fuel. It produces electrical reliably. Not expensive to maintain. Waves are predicable. turbines are eco friendly. It does not pollutions air. It is renewable and will never run out.

6. Disadvantages a barrier across a space is expensive and requires a giant open space to build. Fish cannot migrate through unless a fish ladder is installed. Can only produce for 10 hours. There are few suitable sites for tidal bridges.

7. How it works The ebb and flow of the tides can be used to turn a turbine, or it can be used to push air through a pipe, which turns a turbine. Then the energy created by the turbines goes up into a pipe witch takes the energy to the land.

8. Define The water flows through the under water turbines which spin and generate electricity.

9. conclusion We think that tidal power is a very good way to get energy. It is not expensive and eco friendly. It is also good because it uses water and 80% of the world is water. It also lets fish through it and it will never run out. It is also predictable and turbines are cheapish. It is also bad because it is only runs for ten hours. But overall it is very good and doesn’t pollute the air and that’s great.

10. video http://youtu.be/qRUl1mJQHmc