Hydro-tidal+2

[|Tidal Power Information]

**//Tidal Hydroelectric Power://**

 * Definition**: The power available from the rise and fall of ocean tides. A tidal power plant works on the principal of a dam or barrage that captures water in a basin at the peak of a tidal flow, then directs the water through a hydroelectric turbine as the tide ebbs.

• The tide moves a huge amount of water twice each day,
 * What is its source?**

As the tide moves in and out, underwater turbines are turned in one direction and then the other to generate electricity.
 * How is this source used to make energy?**


 * What equipment do you need to convert the “raw material” into energy?**

dam, tidal, fence, turbine

Shasta Dam in Northern California 1. Water flows into a penstock 2. Then into a turbine 3. This turns a generator 4. ELECTRICITY!
 * Give a real-life example of where it is used, and how.**


 * List two advantages and two disadvantages**.

GOOD:

 * doesn' t cost a lot
 * It produces electricity reliably.

BAD:

 * hurts sea life; many birds rely on the tide uncovering the mud flats so that they can feed. There are few suitable sites for tidal barrages.
 * Only provides power for around 10 hours each day, when the tide is actually moving in or out.

• The largest tidal power station in the world (and the only one in Europe) is in the Rance estuary in northern France. It was built in 1966. • A major drawback of tidal power stations is that they can only generate when the tide is flowing in or out - in other words, only for 10 hours each day. However, tides are totally predictable, so we can plan to have other power stations generating at those times when the tidal station is out of action.
 * The most unusual fact I learned was…….**