Renewable and Non-Renewable Energy Resources for Generating Electricity

1. Renewable and Non-Renewable Energy Resources for Generating Electricity

2. Renewable and Non-Renewable Energy Resources • Electrical generators transform the energy of motion into an electric current. • Most electricity generated in Canada is from hydroelectric or thermoelectric sources. • Other energy sources include biomass, geothermal energy, sunlight, wind, and tides. • There are both renewable and non-renewable energy sources.

3. Energy Sources • The source of the electricity that you use in your home is a large hydroelectric dam a coal - burning generating plant, or a nuclear generating plant.

4. Energy Sources • A non - renewable resource is one that cannot be replaced once it is used up. • Coaland oil are non-renewable resources.

5. Energy Sources • A renewable resource is one that can be reused or replaced. • The sun and the wind are renewable resources.

6. Generating Electricity • In 1831, an English chemist and physicist named Michael Feraday demonstrated that an electric current can be generated by moving a conducting wire through a magnetic field, a process called electromagnetic induction. http://www.biografiasyvidas.com/biografia/f/faraday.htm

7. Generating Electricity • Most generators transform the energy of movement into an electric current.   • The magnets inside a generator are rotated by a turbine , which is a machine that uses the flow of a fluid to turn a shaft.

8. Generating Electricity • The magnets spin coils of copper wire. • This pulls electrons away from their atoms and creates a current flowing in the copper wire.

9. Generating Electricity • The current is sent through transmission lines to reach cities and towns. http://www.sindhcoal.gos.pk/Transmission.htm

10. Generating Electricity • The web of interconnections between generating stations, substations, and users is called an energy grid or a distribution grid.

11. Generating Electricity • Generating electricity starts with a spinning turbine and ends up at your wall socket. • But where does the energy come from to spin the turbine?

12. Using Water Power to Generate Electricity • Most electricity generated in Canada is hydroelectricity, which means it is generated by harnessing the power of flowing water.

14. Using Water Power to Generate Electricity • In a hydroelectric generating station, water flows through a penstock. • As it flows past the turbine, it causes the turbine to turn.

15. Using Water Power to Generate Electricity • The turning turbine is connected to the generator. • The generator converts the energy from the turning motion of the turbine to electrical energy.

16. Using Heat to Generate Electricity  In many areas, thermoelectric generating plants use a fuel suchas coal or biomass to heat water to create high-pressure steam.

17. Using Heat to Generate Electricity Coal oil, and natural gas are fossil fuels , which means they were produced from the organic matter of organisms that lived millions ofyears ago.

18. Coal Fired Generating Station http://www.keycorrespondents.org/2012/03/13/coal-fired-power-damages-health-and-the-environment/

19. Thermoelectric Generating Station • A fossil fuel, usually coal, is burned in a combustion chamber to boil water. • The high-pressure steam strikes and pushes the blades on the turbine. • The turbine is connected to a generator.

21. Biomass • Biomass is organic material made up of plant and animal waste. • Examples of biomass include wood, peat, straw, nut shells, sewage, and corn husks. http://www.solarpowernotes.com/renewable-energy/biomass-energy/biomass-energy.html

22. Biomass •  In a biomass system, the organic waste decomposes to produce a gas called methane. • The methane gas can be burned to boil water to make steam.

23. Nuclear Energy • 51% of our electricity in Ontario is thermonuclear, which means it isproduced by heat in nuclear power stations. http://www.opg.com/education/PhotoGallery.asp

24. Nuclear Energy • In a nuclear reactor, atoms of a heavy element, usually uranium, are split in a chain reaction. http://www.atomicarchive.com/Fission/Fission1.shtml

25. Nuclear Energy • This splitting, called nuclear fission , releases an enormous amount of energy. • The energy released by the fission process is used to heat water produce steam to turn a turbine.

26. Geothermal Energy • In some places in the world, water is naturally heated by hot rocks deep in Earth’s crust and rises to the surface as hot water and steam. http://www.mining.ubc.ca/cerm3/geothermal.html

27. Geothermal Energy • The energy from this hot water and steam is called geothermal energy. • Geothermal energy sources at or near Earth’s surface are hot enough to heat homes and other buildings. http://www.surviveclimatechange.com/geothermal-energy.html

28. Solar Energy • A solar cell has specially treated layers that create electricity when exposed to sunlight

29. http://wicomicoenvironment.org/use-energy-wisely

30. Wind Energy • Wind turbines use the energy of moving air to spin their blades, which are connected to a generator. http://www.zephyrwind.com/wind_energy.html

31. Wind energy • The amount of energy a wind turbine generates depends on how fast the wind is blowing. • Wind energy currently provides about1% of Ontario’s electricity, but it is one of the fastest - growing energy sources in the world.

32. Tidal Energy • Tidal energy uses the energy of the gravitational pull of the moon. http://www.solarpowernotes.com/renewable-energy/tidal-energy/tidal-energy.html

33. Tidal Energy • North America’s only tidal power generating station is in Annapolis Royal, in Nova Scotia, where the powerful tides of the Bay of Fundy spin its turbines. http://www.global-greenhouse-warming.com/Annapolis-tidal-power.html

34. Tidal Energy • The station provides enough electricity for about 4500 homes. http://www.canadacool.com/COOLFACTS/NOVA%20SCOTIA/AnnapolisRoyalTidal.html

35. http://www.mycomicshop.com/search?TID=599721