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Gfroerer, Tim – Physics Teacher, 2013
Typical commercial solar panels consist of approximately 60 individual photovoltaic cells connected in series. Since the usual Kirchhoff rules apply, the current is uniform throughout the circuit, while the electric potential of the individual devices is cumulative. Hence, a solar panel is a good analog of a simple resistive series circuit, except…
Descriptors: Physics, Power Technology, Equipment, Energy Education
Haugland, Ole Anton – Physics Teacher, 2014
The bicycle generator is often mentioned as an example of a method to produce electric energy. It is cheap and easily accessible, so it is a natural example to use in teaching. There are different types, but I prefer the old side-wall dynamo. The most common explanation of its working principle seems to be something like the illustration in Fig.…
Descriptors: Science Education, Teaching Methods, Power Technology, Energy Education
Dugdale, Pam – School Science Review, 2014
Electricity from osmotic pressure might seem a far-fetched idea but this article describes a prototype in Norway where the osmotic pressure generated between salt and fresh water drives a turbine. This idea was applied in a student investigation, where they were tasked with researching which alternative materials could be used for the…
Descriptors: Foreign Countries, Power Technology, Energy Education, Energy
Grubbs, Michael E.; Deck, Anita – Technology and Engineering Teacher, 2015
Water turbines have long been used to make work easier for humans while minimizing energy consumption. They are not only used in small- and large-scale operations, but also provide a great context for Integrative STEM education. Students can begin to understand the technological processes available by designing, building, and testing different…
Descriptors: STEM Education, Energy Education, Power Technology, Scientific Concepts
Buelin-Biesecker, Jennifer – Technology and Engineering Teacher, 2014
The average American produces around 1,600 pounds of garbage every year, and it is estimated that 50 percent of that waste is material that could be composted (Clean Air Council, 2012). Instead, most is sent to landfills and incinerators. In technology and engineering education, a great deal of time is spent in talking, teaching, and thinking…
Descriptors: Engineering Education, Technology Education, Engineering Technology, Classroom Environment
Donley, John F.; Stewardson, Gary A. – Technology Teacher, 2010
Alternative energy sources have become increasingly important as the production of domestic oil has declined and dependence on foreign oil has increased. Historically, there have been four time periods during which the United States was in fact crippled by oil shortages. These time periods include: (1) the early 1900s; (2) World War II; (3) the…
Descriptors: Fuels, Middle Schools, Energy, Energy Education
Roman, Harry T. – Tech Directions, 2004
Over the past 25 years, the author has had the opportunity to study the subject of solar energy and to get involved with the installation, operation, and testing of solar energy systems. His work has taken him all over the United States and put him in contact with solar experts from around the world. He has also had the good fortune of seeing some…
Descriptors: Energy, Energy Education, Power Technology, Hands on Science
Benrey, Ronald M.; Schultz, Robert F. – 1981
Eight experiments dealing with alternative energy sources are presented. Each experiment includes an introductory section which provides background information and discusses the promises and problems of the particular energy source, a list of materials needed to complete the experiment, and the procedures to be used. The experiments involve:…
Descriptors: Alternative Energy Sources, Electricity, Elementary School Science, Energy