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122303
Renewable energy resources
Descrição
GCSE Physics Mapa Mental sobre Renewable energy resources, criado por taylor2em em 04-06-2013.
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physics
physics
gcse
Mapa Mental por
taylor2em
, atualizado more than 1 year ago
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Criado por
taylor2em
mais de 11 anos atrás
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Resumo de Recurso
Renewable energy resources
Hydroelectricity
Usually involves flooding a valley by building a dam (Building a dam is VERY expensive!
Rainwater is caught and allowed out through turbines
When MORE electricity is needed, more water can be let out through the turbine
Wave Power
Waves go UP and DOWN which can be used to drive a generator
It's fairly unreliable, (it's weather dependant)
It doesn't produce huge amounts of energy, but it can be useful at small villages
Tidal Barrages
They're big dams built across river estuaries with turbines in them
The water drives the turbine
Very reliable, but extremely expensive to set up!
Wind Power
The wind turns the blades
There's no pollution!
Spoils the view and very noisy
Only work when it's WINDY
Solar Cells
Used to generate electricity on a SMALL scale
Often used in remote places
In sunny countries they are very reliable
Geothermal energy
Only possible in places where hot rocks lie close to the surface
Water is pumped in pipes down to hot rocks
Water gets heated up and turns into steam to drive a generator
Very expensive
No enviromental problems and it's a brilliant way of producing energy
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