1. Electricity production Generally (except for solar cells) a turbine is turned, which turns a generator, which makes electricity.

2. Fossil fuels

3. In electricity production they are burned, the heat is used to heat water to make steam, the moving steam turns a turbine etc.

4. Fossil fuels - Advantages Relatively cheap Can produce a lot of energy Variety of engines and devices use them directly and easily Easy to transport

5. Fossil fuels - Disadvantages Will run out (Non-renewable) Coal in particular produces acid rain Oil spillages etc. Contribute to the greenhouse effect by releasing greenhouse gases

6. Nuclear Fission

7. Heat Heat from nuclear fission is used to heat water, to make steam, which turns a turbine, which turns a generator, which makes electricity.

8. Nuclear power - Advantages High power output Large reserves of nuclear fuels No greenhouse gases No acid rain

9. Nuclear power - disadvantages Waste products dangerous and difficult to dispose of Major health hazard if there is an accident Produces material for Nuclear weapons Expensive to build and run

10. Solar power

11. Solar panels Simply heat water

12. Solar cells Produce electricity

13. Solar power - advantages “Free” energy (once installed) Renewable No grrenhouse gases No acid rain

14. Solar power - disadvantages Only works during the day Affected by cloudy weather Low power output Requires large areas Initial costs are high

15. Hydroelectric power

16. Water storage in lakes “High” water has GPE. AS it falls this urns to KE, turns a turbine etc.

17. Tidal water storage Tide trapped behind a tidal barrage. Water turns turbine etc.

18. Hydroelectric - Advantages “Free” once built Renewable No greenhouse gases No acid rain

19. Hydroelectric - disadvantages Very dependent on location Drastic changes to environment (flooding) Initial costs very high

20. Wind power

21. Wind power - advantages “Free” once built Renewable No greenhouse gases Ideal for remote locations No acid rain

22. Wind power - disadvantages Works only if there is wind! Low power output Unsightly (?) and noisy Best located far from cities High maintainance costs

23. Wave power

24. OWC Oscillating water column

25. Wave power - Advantages “Free” once built Reasonable power Renewable No greenhouse gases No acid rain

26. Wave power - disadvantages Only in areas with large waves Waves are irregular Maintainance and installation costs high Transporting power Must withstand storms/hurricanes

27. Geothermal energy

28. Wells are drilled into hot rocks beneath the earth’s surface Cold water is pumped down to the hot rocks Hot water/steam used to drive turbines, which turn generators, which produce electricity.

29. Advantages Renewable No greenhouse gases No acid rain “Free” energy once built

30. Disadvantages Expensive to build Not suitable in all places

31. Noooooooooo! “Eco-friendly” “Green” “Sustainable” “Environmentally friendly” “Clean”

32. Nuclear fusion

33. In the centre of the sun, hydrogen is fused in helium. LARGE amounts of energy are produced.