RENEWABLE AND ALTERNATIVE ENERGY SOURCES Ms. Marcino Environmental Science Chapter 17 (pgs )
Renewable Energy Today Renewable Energy: _________________________ ___________________________________________ Include: Even renewable energy
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
Pros Cons
Passive Solar Heating Passive solar heating: Not used Example: Energy enters Heat Buildings must be Oriented
Passive Solar Features:
Active Solar Heating Active solar heating: Solar Liquid Hot liquid pumped through
Photovoltaic cells: Produce little electrical current, Energy production from solar cells has doubled every 4 years from 1985.
Wind Power-Cheap and Abundant Wind: Wind power: Wind turbines are cost effective and can by constructed quickly. Aerogenerators:
Wind Farms Wind farms: Take up little space. Land can still be used for farming.
Biomass-Power from Living Things Biomass Fuel: Ex: Used for Renewable Careful-
Methane Alcohol
Hydroelectricity-Power from Moving Water Hydroelectric energy: Dam across Water Motion of turbine Benefits:
Disadvantages: Modern Trends Micro-hydropower:
Energy from the Tides Generate electricity similarly to how generated in river. Turbine must be able to turn in BOTH directions.
Geothermal Energy-Power from the Earth Geothermal Energy: Geothermal heat pump:
Enough heat present in the earth to melt rock. Magma: When it
Alternative Energy and Conservation Alternative energy: To become viable,
Tidal Power Movement of water in oceans caused by gravitational attraction between the Marked by As tide rises,
Ocean Thermal Energy Conversion (_______) Warm surface water is used to boil sea water in a vacuum chamber. Pumping the water
Hydrogen When burned Current production