- Wind power to electrical energy
- Turbine rotation to Electrical energy
- Tread mill in Gym to Electrical Energy(or Battery recharge)
- I would use my energy to produce electrical energy
Concept:
http://www.pbs.org/tesla/tt/tt02.html
GRADE LEVELGrades 6 through 8
ESTIMATED TIMEThis lesson plan will take approximately 50 minutes.
CONCEPTEnergy can neither be created nor destroyed. However, it can be changed from one form to another. This important idea is called the Law of Conservation of Energy.
BACKGROUNDWhen water trapped behind a dam is channeled to push on the blades of a turbine, the potential energy of the still water changes form. When the water starts to move, the potential energy becomes kinetic energy. When the turbine starts to spin, the kinetic energy becomes a specific kind of kinetic energy called mechanical energy The spinning motion of the turbine is used to rotate a coil of copper wire between two opposite magnetic poles. This starts electrons moving down the wire. When the coil of copper wire rotates past the North magnetic pole, the electrons move down the wire in one direction. When the coil rotates past the South magnetic pole, the electrons reverse direction. This back-and-forth flow of electricity through a wire is called alternating current-otherwise known as AC. A device in which coils of copper wire are rotated through magnetic fields to generate electric current is called a dynamo. |
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