The heat/energy intensity of the sun conducted through glass is demonstrated in this video.
In this video, Mr. Zimmerman discusses with the students some of the essential elements needed to construct solar cookers.
Renewable Energies by Frankie Holmes
Did you know?
Only about 7.5% of the United States energy came from renewable power sources, in 1998, although 250 times for renewable power was available over their consumption.
Electricity for 600,000 families within the U.S. can be produced by the current turbine power industries.
Hawaii is home to the largest wind turbine in the world. It stands 20 stories high! And its blades expand the length of a football field.
Every hour enough sunlight reaches the earth’s surface that could potentially provide the world with power for one year.
For more information:
http://tonto.eia.doe.gov/kids/energy.cfm?page=renewable_home-basics Energy Kids Renewable energy