oWoWhat is Hydroelectricity? oHoHow does it work? oAoAdvantages oDoDisadvantages oEoExamples and Pictures oFoFuture- for this renewable energy oFoFacts oOoOnline Quiz oQoQuiz have you been listening? oQoQuestion Time

 The name Hydroelectricity comes from the Greek word ‘hydro ’that means water.  When we use the energy in flowing water to produce electricity, we call it hydroelectricity.  Hydroelectricity makes a major contribution to the worlds energy supplies- more than any other kind of renewable resources

 There are two main ways of using the energy in flowing water to produce electricity.  Hydroelectric dams trap flowing water then release it again under greater pressure.  A river flowing through a valley is blocked by building a large concrete dam.  The valley is flooded by the river, creating a reservoir of water, like a man made lake.

 Once construction completed, operating costs are very low.  No waste or pollution is produced.  Electricity can be generated constantly, because water can be stored and used when needed.

 Dams are very expensive to build.  Hydroelectricity sites are often remote, which leads to higher distribution costs.  Suitable sites for large-scale projects are hard to find.

We think that the future for hydroelectricity is very bright, but finding a place to manufacture it could be quite hard during the economical downturn in Ireland. Hydroelectricity is a very smart idea, and in the future will probably produce lots of jobs in Ireland.

 One of the best ways to produce electricity is through moving water.  China generates more hydroelectricity than any other country in the world.  Hydroelectricity is the term referring to electricity generated by hydropower.  Lester Pelton invented hydroelectricity.

TThe name Hydroelectricity comes from the Greek word “____” that means water.  Dams are very ________to build.  The A swan dam is in _____.

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