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Published byGilbert Pierce
Modified over 8 years ago
Electricity production Generally (except for solar cells) a turbine is turned, which turns a generator, which makes electricity.
In electricity production they are burned, the heat is used to heat water to make steam, the moving steam turns a turbine etc.
Fossil fuels - Advantages Relatively cheap Can produce a lot of energy Variety of engines and devices use them directly and easily Easy to transport
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
Heat Heat from nuclear fission is used to heat water, to make steam, which turns a turbine, which turns a generator, which makes electricity.
Nuclear power - Advantages High power output Large reserves of nuclear fuels No greenhouse gases No acid rain
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
Solar panels Simply heat water
Solar cells Produce electricity
Solar power - advantages “Free” energy (once installed) Renewable No grrenhouse gases No acid rain
Solar power - disadvantages Only works during the day Affected by cloudy weather Low power output Requires large areas Initial costs are high
Water storage in lakes “High” water has GPE. AS it falls this urns to KE, turns a turbine etc.
Tidal water storage Tide trapped behind a tidal barrage. Water turns turbine etc.
Hydroelectric - Advantages “Free” once built Renewable No greenhouse gases No acid rain
Hydroelectric - disadvantages Very dependent on location Drastic changes to environment (flooding) Initial costs very high
Wind power - advantages “Free” once built Renewable No greenhouse gases Ideal for remote locations No acid rain
Wind power - disadvantages Works only if there is wind! Low power output Unsightly (?) and noisy Best located far from cities High maintainance costs
OWC Oscillating water column
Wave power - Advantages “Free” once built Reasonable power Renewable No greenhouse gases No acid rain
Wave power - disadvantages Only in areas with large waves Waves are irregular Maintainance and installation costs high Transporting power Must withstand storms/hurricanes
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.
Advantages Renewable No greenhouse gases No acid rain “Free” energy once built
Disadvantages Expensive to build Not suitable in all places
Noooooooooo! “Eco-friendly” “Green” “Sustainable” “Environmentally friendly” “Clean”
In the centre of the sun, hydrogen is fused in helium. LARGE amounts of energy are produced.
12.4 Sustainable Sources of Electricity (Pages )
Production and Distribution of Electrical Energy
Disadvantages Inefficient (only 30% efficiency).
Renewable Resources. Note cards for mobile Write how the alternative energy resource works Write two advantages Write two disadvantages.
Alternative Energy Resources Renewable Resources.
Where does it all come from?. Originally: The sun. Provides almost 1,000,000 Joules of energy per square metre of Earth every day. Our primary energy.
Earth’s Natural Resources
Conclusions? Where should America go with respect to energy generation?
Bellringer Classify each resource as renewable or nonrenewable: Oil
Energy Resources Noadswood Science, 2011.
Renewable and Non-renewable Energy Sources
Advantages and Disadvantages of Energy Sources
CHAPTER 3 Production and Distribution of Electrical Energy.
Renewable and Non-Renewable Energy
Wind Energy – energy from the wind
Topic 4.0 – Society and Electricity. I. Ways to Produce Electrical Energy A. Using Thermal Energy (Heat) o Coal: Is burned to produce heat o Nuclear Fission.
Energy sources from the sun
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