1. Tidal Power By: Katie Thomas (The Scientist)

2. Tidal Barrage Power A huge barrage is built (much bigger than a hydro-electric dam) As the tide goes in and out, water moves through barrage which turns turbines At low tide (when there aren’t many waves) the water behind the dam gets released and turns a turbine = electricity! Basically, the barrage uses the tidal waves to generate power and stores the rest of the water until it’s needed

3. Diagram of Barrage 1. Water comes in here 2. Water gets held for later use 3. When the tide gets low, the stored water is let out to turn the turbines

4. Real Tidal Barrage in France

5. Tidal Stream Power This type is like Tidal Barrage Power It uses ocean currents to generate electricity (great for islands or coasts with fast currents) It can use tidal fences (stretch across) or tidal turbines (like underwater wind turbines) to generate The up and down movement of water = electricity from the movement of the turbines

6. Diagram of Tidal Stream As the current moves toward the turbine it turns and generates electricity Turbine These turbines are a lot like wind turbines but they are much more durable because of the high pressured water.

7. Real Tidal Stream Generator

8. Mechanical Energy>Electrical These types of tidal power are generated by the mechanical movement of the waves converting into electricity This occurs when the waves move past the turbines and turn them to create electrical energy Therefore, the electricity is generated by turning mechanical energy (turbines) into electrical energy (the electricity generated)

9. THE END