1. Alternative Energy Sources

2. 5 Alternative Energy Sources
Nuclear
Solar
Water
Wind
Geothermal

3. Nuclear Energy
Nuclear Fission: Splitting of the nucleus of Uranium into much smaller nuclei
The splitting heats surrounding water which becomes a source of energy for running electric generators.

4. Nuclear Energy
The fission of 1g of U releases as much energy as 3 tons of coal (14 barrels of oil)
Dangers: Waste needs to be disposed of or it will kill plant/animal cells

5. Nuclear Energy
Nuclear Fusion: nuclei of smaller nuclei COMBINE to form one large nuclei
Energy from sun is produced this way

6. Solar Energy
Solar energy captures light from sun to heat water & produce electricity
Problems involve expense & the battle of dark vs. light.

7. Water
Hydroelectric Power is generated by damming water & releasing it at certain times creating electricity
Can only be used in an areas w/ rivers suitable for damming
Low cost & no pollution
Destroys river habitat

8. Water – Hydroelectric Dam

9. Wind Energy
Electricity generated by speed of wind against the blades of a windmill
Windmill farms are located in areas with consistent high speed winds
Danger to migratory birds.
Expensive

10. Geothermal Energy
Geothermal Energy capture energy from water heated from earth’s internal processes
Used mainly in Iceland

11. Geothermal Energy
Heat from the Earth’s interior that is converted to electrical energy when steam or hot water from below Earth’s surface is piped to a power plant to run a generator
Usually found in volcanic areas, countries around the world have geothermal plants