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
Passive Solar Heating Passive solar heating:
Not used Example:
Energy enters Heat
Buildings must be
Oriented
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:
Hydroelectricity-Power from Moving Water
Hydroelectric energy:
Dam across Water Motion of turbine
Benefits:
Energy from the Tides Generate electricity similarly to how
generated in river. Turbine must be able to turn in BOTH
directions.
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