Electrical generating plant

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Presentation transcript:

Electrical generating plant EXERCISE: Where does our power come from? Local power lines Sub-station High- voltage transmission lines Electrical generating plant A EXERCISE for groups of 3-4 students: ask them to brainstorm on how far back they can trace our electrical power, and make notes or sketches on a sheet of paper. May collect paper for extra credit before discussion. Many students are unlikely to be aware of the contribution from fossil energy. Diagram: Simplified power system, including coal-bearing strata (UE4E Figure 22.8 crop) and sun-driven photosynthesis (UE4E Figure 22.4 crop). Rock cycle Organisms Fossil fuels Coal, petroleum, Natural gas (Major source) Source of energy? Hydro Nuclear Wind/Solar Geothermal etc. (Minor sources) (Press et al.) Power from the past 1