Generating electricity-lesson

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  • 1. Generating Electricity World Electricity GenerationLG: to compare different methods of electricity generation

2. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energyLG: to compare different methods of electricity generation 3. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. hydroelectric generation Turbine: a fan-like device which turns in response to the pressure of falling waterLG: to compare different methods of electricity generation 4. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. hydroelectric generation Generator: a coil of wire turned inside a magnet generates electricityLG: to compare different methods of electricity generation 5. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. hydroelectric generation Power lines: electricity generated is carried in wires over long distances to our homesLG: to compare different methods of electricity generation 6. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. tidal generation -high & low tides occur twice daily -tidal water movement can be used to turn a turbineLG: to compare different methods of electricity generation 7. Generating ElectricityLG: to compare different methods of electricity generation 8. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. thermal generation -water is heated to make steam -pressure builds & the steam can only escape by passing through a turbine -this turns the turbineLG: to compare different methods of electricity generation 9. Generating ElectricityLG: to compare different methods of electricity generation 10. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. thermal generation Fossil Fuel: burning coal, oil, or natural gas can be used to heat the waterLG: to compare different methods of electricity generation 11. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. thermal generation Fossil Fuel: burning coal, oil, or natural gas can be used to heat the water Radioactive Material: when the nuclei of uranium atoms break apart huge amounts of energy is released, which can be used to heat the waterLG: to compare different methods of electricity generation 12. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. thermal generation Fossil Fuel: burning coal, oil, or natural gas can be used to heat the water Radioactive Material: when the nuclei of uranium atoms break apart huge amounts of energy is released, which can be used to heat the water Biomass: biodegradable wastes can be burned to heat the water LG: to compare different methods of electricity generation 13. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. Wind -the blades themselves act as a turbine to turn the middle of the generator to produce electricity called wind turbines, not wind mills wind turbine videoLG: to compare different methods of electricity generation 14. Generating Electricity Electricity Generation: electrical energy has to be made by conversion from some other form of energy e.g. Light photovoltaic cells: converts light directly into electrical energyLG: to compare different methods of electricity generation 15. Generating Electricity Now it's your turn: Activity 12.8 pp 536 537LG: to compare different methods of electricity generation