2_ConductorsInsulatorsLightning0910 - • The ground...

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1 Electrostatics Insulators/Conductors Lightning Insulators s Charges removed from one area of an insulator are not replaced by charges from another area. s Examples: Glass, dry wood, most plastics, cloth, and dry air. Conductors s Loosely-bound electrons. s Electrons carry, or conduct, electric charge through the metal. s Semiconductors – materials that can be made to behave sometimes as insulators and sometimes as conductors. s Superconductors – materials with zero resistance to the flow of charge * certain metals near absolute zero
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2 Lightning • Wind rubs surface of ground and buildings. • Electrons taken from surface to sky.
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Unformatted text preview: • The ground becomes positively charged. • The bottom of the cloud becomes negative. Most of the time, lightning hits the ground. However, because lightning flows from high potential energy to low potential energy, it can also flow to the other part of cloud if it has lower potential energy than the air. Static Electricity takes the shortest path! Now is slow motion! Lightning Rods 3 Online Video Lessons http://www.curriki.org/xwiki/bin/view/Demo/nrocCourses Physics Tutorial http://library.thinkquest.org/10796/index.html...
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This note was uploaded on 11/13/2011 for the course PHYS 1111 taught by Professor Plascak during the Fall '08 term at UGA.

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2_ConductorsInsulatorsLightning0910 - • The ground...

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