1. Fossil Fuels vs. Alternative Energy

2. Renewable vs. Non-renewable Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often are: Solar, Wind, Biomass, hydropower and geothermal. Non-renewable energy sources can not be replenished (made again) in a short period of time. Examples are coal, oil (petroleum) and natural gas (methane)=(Fossil Fuels)

3. Traditional Energy Sources Negatives: Not Sustainable (to supply) Environmental impact CO 2 Emissions (green house effect) Fossil Fuels = fuels made from the remains of dead plants and animals millions of years ago. Positives: Generally Inexpensive Versatile in its uses Easily transported Coal Oil Natural Gas

4. Fossil Fuels Coal Oil Natural Gas

5. Fossil Fuels Coal Oil Natural Gas Also known as Positives: Readily available Versatile in its uses Inexpensive Easily transported Negatives: Strip-mining Releases CO 2 into atmosphere Nonrenewable Health concerns Anthracite, Bituminous, Lignite When burned, provides more than 50% of the electricity in the Unites States!

6. Fossil Fuels Coal Oil Natural Gas “nodding donkeys”

7. Fossil Fuels Coal Oil Natural Gas Easily transported Versatile in its uses Negatives: Releases CO 2 into atmosphere Nonrenewable Environmental impact Also know as Petroleum Positives:

9. Fossil Fuels Coal Oil Natural Gas

10. Fossil Fuels Coal Oil Natural Gas Burns cleaner than coal Easily transported Versatile in its uses (propane gas is used in gas grills) Negatives: Releases CO 2 into atmosphere Explosive Nonrenewable Also know as Methane Positives:

12. Why do we need alternative energy resources? Fossil fuels take millions of years to be made. We are consuming fossil fuels worldwide at an alarming rate with no end in sight! We are Destroying the environment and its’ ecosystems. More animals are becoming extinct and endangered everyday!

13. Depletion of Rain Forest on the Island of Madagascar

14. Recently Extinct Animals Passenger Pigeon 1914 North America Golden Toad 1989 Costa Rica

15. Recently Extinct Animals Caribbean Monk Seal 1952 Caribbean Sea and the Gulf of Mexico Pyrenean Ibex 2000 France and Spain

16. Recently Extinct Animals Tecopa Pupfish 1981 California Baiji River Dolphin 2006 China

17. WHAT ARE FOUR REASONS WHY WE NEED TO FIND ALTERNATIVE FUELS? Fossil fuels take millions of years to be made. *Fossil fuels are beginning to run out worldwide* Destroying the environment and ecosystems. Animals are becoming extinct and endangered!

18. Alternative Energy Sources Nuclear Solar Wind Geothermal Hydroelectric Hydrogen Fuel Biodiesel

19. Alternative Energy Sources Nuclear Solar Wind Geothermal Hydroelectric Hydrogen Fuel Biodiesel

20. Alternative Energy Sources Nuclear Solar Wind Geothermal Hydroelectric Hydrogen Fuel Biodiesel Positives: Low Fuel Cost Little Pollution Negatives Disposal of Radioactive waste Meltdowns Safety Ex-Salem Nuclear Power Plant (NJ)

21. Yucca Mountain-Utah Nuclear Waste Repository

22. Alternative Energy Sources Nuclear Solar Wind Geothermal Hydroelectric Hydrogen Fuel Biodiesel

23. Alternative Energy Sources Nuclear Solar Wind Geothermal Hydroelectric Hydrogen Fuel Biodiesel Positives: Sustainable Non-Polluting Negatives Large areas needed Doesn’t work at night or on cloudy days very well Not very efficient (40% at best) Solar panels are expensive Ex. DuPont