Generating electricity-lesson

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Generating Electricity World Electricity Generation LG: to compare different methods of electricity generation

Transcript of Generating electricity-lesson

Page 1: Generating electricity-lesson

Generating Electricity

World Electricity Generation

LG: to compare different methods of electricity generation

Page 2: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

LG: to compare different methods of electricity generation

Page 3: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. hydroelectric generationTurbine: a fan-like devicewhich turns in response to the pressure of falling water

LG: to compare different methods of electricity generation

Page 4: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. hydroelectric generationGenerator: a coil of wireturned inside a magnetgenerates electricity

LG: to compare different methods of electricity generation

Page 5: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. hydroelectric generationPower lines: electricitygenerated is carried inwires over long distancesto our homes

LG: to compare different methods of electricity generation

Page 6: Generating electricity-lesson

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 aturbine

LG: to compare different methods of electricity generation

Page 7: Generating electricity-lesson

Generating Electricity

LG: to compare different methods of electricity generation

Page 8: Generating electricity-lesson

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 turbine

LG: to compare different methods of electricity generation

Page 9: Generating electricity-lesson

Generating Electricity

LG: to compare different methods of electricity generation

Page 10: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. thermal generationFossil Fuel: burning coal, oil, or natural gas

can be used to heat the water

LG: to compare different methods of electricity generation

Page 11: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. thermal generationFossil Fuel: burning coal, oil, or natural gas

can be used to heat the waterRadioactive Material: when the nuclei of

uranium atoms break apart huge amounts of energy is released, which can be used to heat the water

LG: to compare different methods of electricity generation

Page 12: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. thermal generationFossil Fuel: burning coal, oil, or natural gas

can be used to heat the waterRadioactive 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

Page 13: Generating electricity-lesson

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

electricitycalled wind turbines, not wind mills

wind turbine video

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Page 14: Generating electricity-lesson

Generating Electricity

Electricity Generation: electrical energy has to be made by conversion from some other form of energy

e.g. Lightphotovoltaic cells: converts light directly into electrical energy

LG: to compare different methods of electricity generation

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Generating Electricity

Now it's your turn:

Activity 12.8 pp 536 – 537

LG: to compare different methods of electricity generation