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In this lesson you will learn about the main energy resources used to generate electricity and for heating and transport, how they are classified as renewable or non-renewable, and the factors that influence a country's energy mix. This is part of AQA GCSE Combined Science Trilogy (8464), Section 6.1.
An energy resource is a source of energy that can be used to do useful work — generating electricity, heating, or powering transport.
Energy resources are classified as either renewable or non-renewable.
| Type | Definition | Examples |
|---|---|---|
| Non-renewable | Will run out; formed over millions of years; cannot be replaced on a human timescale | Fossil fuels (coal, oil, natural gas), nuclear fuel (uranium) |
| Renewable | Will not run out; replenished naturally on a short timescale | Wind, solar, hydroelectric, tidal, wave, geothermal, biofuel |
Fossil fuels (coal, oil, and natural gas) are burned to release chemical energy. In a fossil fuel power station:
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