Non-renewable resources: a resource that cannot be replaced after it has been used.
Ex: coal, oil, wood
Renewable resource: a resource that can be replaced after it has been used.
Ex: solar, wind, geothermal
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Where does energy come from
Michael Faraday was the first to discover that an electrical current can be created when an conducting wire is moved through a magnetic field.
This is called magnetic induction.
Generators do the same job today, and create energy that is transferred by wires to the energy grid.
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How does the generator get energy?
There are several methods of generating electricity for our consumption.
Hydroelectricity: generated by harnessing the power of water.
Water is allowed to turn turbines which power the generator, allowing electricity to be created.
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Thermoelectricity: electricity generated by heat. This heat creates steam, which pushes turbines to power the generator.
There are several methods of generating the heat involved in thermoelectric generators, including fossil fuels, nuclear energy and geothermal energy.
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Other sources of energy
Other forms of energy that can be used to generate electricity include solar energy, wind energyandtidal energy.
All of these different methods of generating electrical energy have their own advantages and disadvantages.
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Energy production in Canada
Canada obtains most of its energy from hydroelectricity, with coal and nuclear energy coming in 2nd and 3rd.
In the future it is believed we will need to alter the balance of how much of our energy comes from renewable resources vs. non-renewable, as some non-renewables will begin to run out.
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What we're working on
Name and explain three methods of generating electricity from heat.
Name and explain three methods of generating electricity from renewable resources.