Transcript Energy Resources

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