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P3: Energy resources (3.3: Power from the sun and the earth…
P3: Energy resources
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3.1: Energy demands
In most power stations, water is heated to produce steam, the steam drives a turbine, which is coupled to an electric generator that generates electricity
Most power stations in the UK burn fossil fuels, such as oil, coal, or gas
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Their are lots of uranium nuclei in the reactor core, so lots of energy can be released - the energy is used to heat water, turning it into steam
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3.5: Big energy issues
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A constant amount of electricity is provided by nuclear and coal-fired power stations - this is called the base load demand
The demand for electricity varies at different times during the day, and between summer and winter
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Renewable energy resources are used when demand is high and the conditions for the resource are suitable
The overall cost of a new power station depends on building costs, fuel costs, maintenance costs, and decommissioning costs
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