1. RENEWABLE AND ALTERNATIVE ENERGY SOURCES Ms. Marcino Environmental Science Chapter 17 (pgs. 264-283)

2. Renewable Energy Today  Renewable Energy: _________________________ ___________________________________________  Include:  Even renewable energy

3. Solar Energy  Solar energy:   Medium-sized _______  Radiates energy High temperatures cause hydrogen nuclei to fuse, forming helium nuclei and a loss of mass occurs. Lost mass converted to heat and light energy.  Only little bit (___________) of  All  Energy reaches us as

4.  Pros   Cons 

5. Passive Solar Heating  Passive solar heating:  Not used  Example: Energy enters Heat  Buildings must be  Oriented

7. Passive Solar Features:

8. Active Solar Heating  Active solar heating:  Solar  Liquid  Hot liquid pumped through

10.  Photovoltaic cells:   Produce little electrical current,  Energy production from solar cells has doubled every 4 years from 1985.

12. Wind Power-Cheap and Abundant  Wind:  Wind power:  Wind turbines are cost effective and can by constructed quickly.  Aerogenerators:

13. Wind Farms  Wind farms:  Take up little space.  Land can still be used for farming.

15. Biomass-Power from Living Things  Biomass Fuel:   Ex:  Used for Renewable Careful-

17.  Methane  Alcohol

18. Hydroelectricity-Power from Moving Water  Hydroelectric energy:  Dam across  Water  Motion of turbine  Benefits:

20.  Disadvantages:  Modern Trends Micro-hydropower:

21.  Energy from the Tides  Generate electricity similarly to how generated in river.  Turbine must be able to turn in BOTH directions.

22. Geothermal Energy-Power from the Earth  Geothermal Energy:  Geothermal heat pump:

23.  Enough heat present in the earth to melt rock.  Magma: When it

24. Alternative Energy and Conservation  Alternative energy:  To become viable,

25.  Tidal Power  Movement of water in oceans caused by gravitational attraction between the  Marked by  As tide rises, 

26.  Ocean Thermal Energy Conversion (_______)  Warm surface water is used to boil sea water in a vacuum chamber.  Pumping the water

28.  Hydrogen   When burned  Current production