4th grade ch. 13 sec. 2 how do electric charges flow

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4th grade ch. 13 sec. 2 how do electric charges flow

  1. 1. CHAPTER 13 SECTION 2
  2. 2. electric current•continuous flow of electriccharges througha material
  3. 3. conductor•material in which a chargecan flow easily•ex. copper, silver
  4. 4. insulator•charges not able to movefreely•ex: plastic, wood
  5. 5. electric circuit• complete,unbrokenpath throughwhich electriccharges canflow
  6. 6. resistance• measure of how difficult it is forcharges to flow through a material
  7. 7. seriescircuitonly 1pathfor currentto takeadvantage disadvantagessimple tobuildif 1 light goesout-all go outmore bulbsadded-greater resistance
  8. 8. seriesseriescircuitcircuit
  9. 9. several pathsfor currentto takeadvantagemore branchesadded-decreasedresistanceif 1 lightgoes out-other stay lit
  10. 10. householdhouseholdcircuits-circuits-parallelparallelcircuitscircuits
  11. 11. What happens when an electriccurrent is produced?• a continuous flow of chargestravel through a material
  12. 12. Contrast electric current andstatic electricity.• An electric current is acontinuous flow of charge.In static electricity, chargesbuild up but do not flow.
  13. 13. Explain why electric currentcannot exist if an electric circuit isbroken.• charges cannot flow becausethe path is not complete
  14. 14. Define conductor and insulator.• conductor = material through whichcharges can flow through easily• insulator = material through whichcharges cannot flow through easily

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