Renewable and non-renewable resources, generating electricity, and heat transfer by conduction, convection and radiation.
Energy resources
- Non-renewable: fossil fuels (coal, oil, gas) and nuclear — finite, reliable, but polluting (CO₂) or with waste issues.
- Renewable: solar, wind, hydroelectric, tidal, wave, geothermal, biomass — won't run out, low CO₂, but often weather-dependent or location-limited.
Most power stations heat water → steam → turns a turbine → drives a generator. Be ready to evaluate resources (cost, reliability, environmental impact).
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