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Energy Resources
Where does our electricity, heat, and fuel come from?
Nonrenewable Resources
• Resources that are used up more quickly than they can naturally be replaced.
Non-Renewable -examples
Renewable Resources
• Any natural resource that is recycled or replaced constantly by nature.
Renewable Resources -examples
U.S. Energy
Use Totals 2009
Make electricity by turning a generator
Fossil Fuels
the fuel is burned to boil water to make steam the steam makes a turbine spin
the spinning turbine turns a generator which produces electricity the electricity goes to the transformers to produce the correct voltage
Fossil Fuels (Oil, Coal, Natural Gas)
• Advantages– Inexpensive– Currently widely
available
• Disadvantages– Non-renewable– Polluting– Dangerous to mine
(coal)
Nuclear Energy
Nuclear Energy
• Advantages– Less polluting than
fossil fuels– Provides a great
amount of energy inexpensively
• Disadvantages– Non-renewable– Radioactive waste
(dangerous)
Solar Energy
Solar Energy
• Advantages– Non-polluting– Inexhaustible
• Disadvantages– Expensive technology– Must have sunny area
Wind Energy
Wind Energy
• Advantages– Non-polluting– Renewable
• Disadvantages– Visual pollution (large
windmills)– Windy area needed
Hydroelectric Energy
Hydroelectric Energy
• Advantages– Non-polluting– Renewable
• Disadvantages– Flooding (destroys
land/habitats)– Destroys fish migration
routes
Geothermal Energy
Geothermal Energy
• Advantages– Non-polluting– Inexhaustible
• Disadvantages– Costly to dig deep into
Earth
Biomass –garbage, wood
Biomass Energy
• Advantages
– Quick to replace– Renewable– Inexpensive
• Disadvantages– Pollution produced
when products are burnt
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