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Alternative Energy

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Joy Sadler

on 15 October 2018

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Transcript of Alternative Energy

Alternative Energy
Scientists have developed energy resources that are an alternative to fossil fuels. They reduce gas emission but are NOT sustainable
Solar energy
Wind energy
Hydroelectric energy
Geothermal energy
Nuclear energy
Solar Energy
Solar energy uses photovoltaic (PV) panels to convert sunlight into electricity
Used in mountainous areas, open areas like deserts
North Carolina Solar House at NC State
House is run entirely off of solar energy
Solar Energy
Produces no pollution
Very quiet
Initial cost of solar panels is expensive
Only works during daylight hours
Nuclear Energy
In nuclear fission, uranium/plutonium nuclei split into smaller nuclei and emit neutrons and heat energy
North Carolina State Nuclear Plant
Nuclear Energy
Create very small amounts of pollution
Very reliable
Radioactive waste (must be monitored for 10,000 years after it is used
Threat of nuclear terrorism/meltdown
Wind Energy
Using the energy of wind to power a turbine
Done in coastal areas
Does not impact ecosystems
Not 100% reliable
High initial cost
Takes up a large amount of land
Hydroelectric Power
Hydroelectric power is the power generated by falling water
Water flows through a dam and turns a turbine
No fossil fuels
Very few breakdowns
Disrupts natural ecosystems
Expensive to build
Geothermal Energy
Geothermal energy takes heat from Earth's interior
Heat within the Earth raises the temperature of groundwater
Water is converted to steam
Can only be done near plate boundaries
Biofuels are energy resources that come from living organisms
Bioethanol - corn, sugarcane
Biodiesel - vegetable oils & animal fats
Biomass - material left over from a once living plant or animal
Less expensive than gasoline
Carbon emissions are less than gasoline
Are more quickly renewed than gasoline
Have lower energy output
Full transcript