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Electrostatics

Electrostatics. Observe the beauty and power of lightning. Lightning strikes over the Pacaya Volcano. How is it possible to produce such electric spark?. It is basically a large electrical discharge.

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Electrostatics

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  1. Electrostatics

  2. Observe the beauty and power of lightning

  3. Lightning strikes over the Pacaya Volcano

  4. How is it possible to produce such electric spark? It is basically a large electrical discharge

  5. Almost all of us are familiar with static electricity because we can see and feel it in the winter. On dry winter days, static electricity can build up in our bodies and cause a spark to jump from our bodies to pieces of metal or other people's bodies. We can see, feel and hear the sound of the spark when it jumps.

  6. Why are paper attracted to the comb?

  7. You may also have the experience of hearing a crackling sound as your take off a nylon sweater. Can you explain?

  8. The crackling is caused by small electric sparks.

  9. Charged by Rubbing

  10. Charged by Rubbing

  11. The electron theory The atoms of all substances contain both negative and positive charges.

  12. Why rubbing things together product electricity? When you rub two different materials together, electrons can rubbed off one materials and on to the other. These electrons are very tiny. Each electrons carries a small electrical charge If you rub two pieces of the same materials together, electrons don’t move. (because of equal chance)

  13. When two substances are rubbed, some of the outer electrons moved to one of substances

  14. One substance will has extra number of electrons (so it is negatively charged). Another substance has fewer electrons (so it is positively charged)

  15. Why rubbing things together produces electricity ? When two different materials are rubbed together, ________________ are rubbed off one material and on to the other. The material that gains electrons becomes _____________ electrical charged. The material that loss electrons becomes _____________ charged These two charges are exactly ____________ in size.

  16. Like charge repel

  17. Like charges repel

  18. Unlike charges attract

  19. Van de Graaff Generator - a device to produce charge easily

  20. http://www.howstuffworks.com/vdg.htm

  21. THE PLASTIC ROLLER BECOMES ELECTRIFIED

  22. Making use of static electricity

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