Energy Sources and Power Stations

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Electricity is a convenient way to supply energy

  • Electricity is convenient (handy) because:
    • it can travel long distances through the national grid
    • it can be used in many different ways
  • Electricity is called a secondary energy source because it's made using primary energy sources (things like coal, nuclear fuel and wind)
  • Most electricity is generated by using primary energy sources to heat water in power stations
  • These are called thermal power stations because they make heat
  • The process in a thermal power station is:
    • Energy from the fuel (which is usually burnt in a boiler) makes steam from water
    • The steam turns a turbine
    • A generator makes electricity from the movement (kinetic energy)

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