1 / 20

Power for the People

Power for the People. Learning objectives: Know different ways of producing electricity Understand the difference between renewable and non-renewable resources Decide how we can supply Cotterton with electricity. Electricity. Non-renewable: Coal Oil Natural Gas Nuclear Power. Renewable:

emi-whitley
Download Presentation

Power for the People

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Power for the People Learning objectives: • Know different ways of producing electricity • Understand the difference between renewable and non-renewable resources • Decide how we can supply Cotterton with electricity

  2. Electricity

  3. Non-renewable: Coal Oil Natural Gas Nuclear Power Renewable: Solar Wind Hydroelectric Tidal Wave Biomass Geothermal How can we produce electricity?

  4. Non-renewable energy

  5. Burning fossil fuels

  6. Renewable energy

  7. Wind power • Sun heats certain areas • Creates pressure difference • Produces wind • Wind turns blades • Turns turbine • Produces electricity • Simple – no need for steam

  8. Advantages and disadvantages Renewable Unreliable No acid rain Few areas suitable Cheap to run once built Low power energy source Noisy and unsightly No global warming Expensive to build Large area required Kills migratory birds

  9. Wave power • Wind over the sea – waves • Used to turn a turbine • Very expensive set up • Low energy output

  10. Tidal power • Gravity of moon • Pulls sea up and down • Used to turn a turbine • Non polluting, renewable and cheap to run • Expensive set up, low output

  11. More renewable energy

  12. Solar power • Photo- voltaic cells (photo = light voltaic= electricity) • Light energy hits cell • Knocks electron lose • Flowing electrons = electricity • Solar heating cells • Turn water to steam – turbine • Heating water

  13. Advantages and disadvantages Renewable Unreliable – why? No acid rain Few areas suitable No global warming Low power energy source Toxic chemicals in solar cells can damage habitats Cheap to run once built Expensive to build

  14. Hydroelectricity

  15. Geothermal Advantages? Disadvantages? Warm water comes back up and used to turn turbines Renewable Cold water pumped down No acid rain or greenhouse effect Cheap once built Few areas suitable Expensive to build Water heated by hot rocks

  16. Pros and cons Renewable Destroys habitats No acid rain Few areas suitable Unsightly No global warming Cheap to run once built Expensive to build Large area required Some systems pump water back up at night with the surplus electricity – energy efficient.

  17. Renewable energy in Cotterton

  18. What does Cotterton need? • 8000 inhabitants • 3000 people live in families (2 adults + 2 children) • 3500 Couples live together • 1500 Single people • Average electricity use • Family = 5480 KWh per year • Couple = 4117 KWh per year • Single person = 3084 KWh per year • 1 wind turbine produces 4700000 KWh per year

  19. What do we know about energy resources? • Get into 2 teams

  20. Power for the People Learning outcomes: • What are some of the different ways of producing electricity? • What’s the difference between renewable and non-renewable resources? • How can we supply Cotterton with electricity?

More Related