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Generating electricity

Electricity is a very convenient form of energy that can be generated using
different energy resources. Some of these resources are renewable and some are
non-renewable. Each resource has advantages and disadvantages.

Fossil fuels
Fossil fuels for power stations




Energy transfer for the generation of electricity from a…

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Fossil fuels release carbon dioxide when they burn, which adds to the greenhouse
effect and increases global warming. Of the three fossil fuels, for a given amount of
energy released, coal produces the most carbon dioxide and natural gas produces the
least.

Coal and oil release sulphur dioxide gas when…

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A wind turbine

Wind turbines have huge blades mounted on a tall tower. The blades are connected to a
nacelle or housing that contains gears linked to a generator. As the wind blows, it
transfers some of its kinetic energy to the blades, which turn and drive the generator.
Several…

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Advantages
Water power in its various forms is a renewable energy resource and there are no fuel
costs. No harmful polluting gases are produced. Tidal barrages and hydroelectric power
stations are very reliable and can be turned on quickly.

Disadvantages
It has been difficult to scale up the designs for…

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Advantages
Geothermal energy is a renewable energy resource and there are no fuel costs. No
harmful polluting gases are produced.

Disadvantages
Most parts of the world do not have suitable areas where geothermal energy can be
exploited.

Solar energy
You should be able to outline how solar energy is used…

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Solar panel

Advantages
Solar energy is a renewable energy resource and there are no fuel costs. No harmful
polluting gases are produced.

Disadvantages
Solar cells are expensive and inefficient, so the cost of their electricity is high.
Solar panels may only produce very hot water in very sunny climates, and…

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This list shows the type of fuel in order of start of time going from short to long.

1. gas-fired station (shortest start-up time)
2. oil-fired station
3. coal-fired station
4. nuclear power station (longest start-up time)
Nuclear power stations and coal-fired power stations usually provide 'base load'
electricity -…

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