Electricity and Circuits

Electricity and Circuits

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Storyboard Text

  • The teacher blew a circuit and the copier stopped!
  • N
  • Electricity provides power.
  • e e e
  • $$
  • How does electricity even get here anyway?
  • -
  • -
  • Electricty is  produced in power plants.
  • S
  • Fossil fuels, tides, wind, &   nuclear sources can also be used to turn the turbines.
  • Solar skips that step
  • Electricty is the movement of electrons along a conductive path used to provide power for flashlights, copy machines, businesses & factories.
  • How does electricity get to my iPhone charger?
  • Electricity is produced when mechanical energy is turned into electrical energy by power plants using turbines & generators.
  • Circuits control the flow of electricty.
  • Close the switch to make the elctrons flow.
  • COAL
  • The voltage of the elctricity is stepped up by a transformer to be carried far away from plant by transmission lines.  Another transformer is used near your house to step down the voltage to be carried by local telephone poles (or underground).
  • Circuits
  • Conductors carry electric current well, while insulators do not.
  • Once the flow of electrons reaches a pole outside your house, it is stepped down again and fed into a meter on the side of your house.  This meter measures how much electricity you use. It goes into a breakerbox that protects your circuits, appliances and electronics.
  • Switch    turns on/off  flow  of electrons (toggle, touch) Load        uses the flow to do work  (light, heat, spin) Source    where the electrons come from (battery,  outlet, solar panel) Path         conductive wire where electrons flow across
  • Metals make good conductive paths, wood and plastic do not.   Many wires are covered in  plastic which keep the electrons  from  flowing out.   The copier is working! I fixed the circuit!
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