ENERGY RESOURCES

Created by: Najeeha
Created on: 03-05-15 18:18


	ENERGY RESOURCES-Water (hydroelectric, tidal and wave)
	Advantages renewable-no waste of non-renewable resources no release of CO2 no release of SO2 Low maintenance-no fuel has to be paid for can become a tourist amenity if a new large lake is created for fishing	Disadvantages only suitable for hilly mountainous regions with high rainfall-only suitable for particular sites which may be inconveniently located for electricity users occupies a large area-loss of scenic amenity land has to be flooded-loss of habitat unusable during droughts-not enough water behind the dam (waves)-needs a suitable site where waves are consisitently strong some designs are noisy needs to be able to withstand rough weather
	Evaluation Water can be in the form of hydroelectric energy when a damn is built accross a river to trap water to create a resevoir.Or it can be tidal in which the damm is built accross an estuary, or it can be in wave in which floats move up and down with the waves. In hydroelectric and tidal energy the gravitational potential energy of the water at the top of the dam is converted into kinetic electricity as the water falls. This is used to turn turbines giving them kinetic energy. The turbines cause generators to rotate which transfers the energy into electrical energy.Wave power is different as the water is not falling through a height onto turbines. The kinetic energy of the water in the wave is used to turn the turbines to give them kinetic energy. The turbines then cause generators to rotate which transfers the energy into electrical energy.

ENERGY RESOURCES-Water (hydroelectric, tidal and wave)

Advantages

renewable-no waste of non-renewable resources
no release of CO2
no release of SO2
Low maintenance-no fuel has to be paid for
can become a tourist amenity if a new large lake is created for fishing

Disadvantages

only suitable for hilly mountainous regions with high rainfall-only suitable for particular sites which may be inconveniently located for electricity users
occupies a large area-loss of scenic amenity
land has to be flooded-loss of habitat
unusable during droughts-not enough water behind the dam
(waves)-needs a suitable site where waves are consisitently strong
some designs are noisy
needs to be able to withstand rough weather

Evaluation

Water can be in the form of hydroelectric energy when a damn is built accross a river to trap water to create a resevoir.Or it can be tidal in which the damm is built accross an estuary, or it can be in wave in which floats move up and down with the waves. In hydroelectric and tidal energy the gravitational potential energy of the water at the top of the dam is converted into kinetic electricity as the water falls. This is used to turn turbines giving them kinetic energy. The turbines cause generators to rotate which transfers the energy into electrical energy.Wave power is different as the water is not falling through a height onto turbines. The kinetic energy of the water in the wave is used to turn the turbines to give them kinetic energy. The turbines then cause generators to rotate which transfers the energy into electrical energy.

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ENERGY RESOURCES