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ELECTRICITY

ELECTRICITY. STATIC ELECTRICITY. THE BUILD UP OF ELECTRONS ON THE SURFACE OF AN OBJECT. AN ATOM. Why electrons?. ATOMIC PARTS. ELECTRON= NEGATIVE PROTON= POSITIVE NEUTRON= NO CHARGE. . eia.doe.gov. STATIC ENERGY. Rubbing a balloon on a wool sweater  creates charges on the surfaces.

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ELECTRICITY

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  1. ELECTRICITY

  2. STATIC ELECTRICITY • THE BUILD UP OF ELECTRONS ON THE SURFACE OF AN OBJECT.

  3. AN ATOM Why electrons?

  4. ATOMIC PARTS • ELECTRON= NEGATIVE • PROTON= POSITIVE • NEUTRON= NO CHARGE .eia.doe.gov

  5. STATIC ENERGY • Rubbing a balloon on a wool sweater creates charges on the surfaces

  6. GAINING OF ELECTRONS O - - - - - - - -

  7. OPPOSITES ATTRACT + - O O

  8. STATIC ELECTRICITY

  9. VAN DE GRAAFFGENERATOR mos.org

  10. Van De Graaf Generator

  11. LIGHTNING

  12. STATIC ELECTRICITY Alaska.net

  13. CURRENT ELECTRICITY • THE FLOW OF ELECTRONS THROUGH A CONDUCTOR.

  14. CURRENT ELECTRICITY

  15. BATTERIES • STORED ELECTRICITY All-Battery.com

  16. BAGDAD BATTERY BCE 250 smith.edu

  17. ELECTRON SHELLS • First: 2 electrons • Second: 8 electrons • Third: 18 electrons • Fourth: 32 electrons • Fifth: 50 electrons ***HAVING A COMPLETE OUTER ELECTRON SHELL MAKES THE ATOM MORE STABLE.

  18. ELECTRON SHELLS web.jjay.cuny.edu

  19. ZINC ATOM chemicalelements.com 30 NEEDS TO GAIN OR LOSE 2

  20. COPPER ATOM chemicalelements.com

  21. CARBON ATOM chemicalelements.com

  22. BATTERY FUNCTION • A BATTERY HAS A CATHODE WHICH TENDS TO ACCEPT ELECTRONS TO BE MORE STABLE AND AN ANODE WHICH TENDS TO GIVE UP ELECTRONS TO BE MORE STABLE AND ELECTROLYTE PASTE WHICH TRANSFERS MOST OF THE ELECTRONS BACK TO THE ANODE WHEN A CIRCUIT IS COMPLETE

  23. CIRCUIT • A CONDUCTOR WHICH CONNECTS A PATHWAY BETWEEN THE CATHODE (+) AND ANODE (-) CATHODE ANODE wikipedia.org

  24. WET CELL BATTERY /lemcellguard.com/battery

  25. DRY CELL BATTERY wikipedia.org

  26. MERCURY BATTERY wikipedia.org wikipedia.org

  27. POTATO BATTERY www.miniscience.com

  28. SIMPLE POTATO BATTERY pbskids.org/zoom/activities

  29. 500 POUND POTATO BATTERY latteier.com/potato

  30. DIFFERENT TYPES OF WIRING SERIES PARALLEL cosmology.berkeley.edu

  31. PARALLEL AND SERIES PARALLEL: SAME POWER LONGER TIME SERIES: MORE POWER SAME TIME

  32. CURRENT ELECTRICITY orkneypics.com

  33. SO WHAT IS ELECTRICITY? aecl.ca/kidszone

  34. ELECTRICITY • THE FLOW OF ELECTRONS THROUGH A CIRCUIT • CAN BE USED TO DO WORK • CAN BE TRANSFORMED INTO MECHANICAL, RADIANT, SOUND AND HEAT ENERGY

  35. GALVANOMETER A device that detects the flow of electricity

  36. ELECTROMAGNET • AN ELECTRIC CURRENT FLOWING THROUGH A WIRE FORMED A MAGNETIC FORCE • AN ELECTROMAGNET CAN BE SHUT OFF

  37. TO BUILD A STRONGER ELECTROMAGNET USE: • MORE WIRE IN THE COIL • A MORE POWERFUL SOURCE OF ELECTRONS

  38. MAGNETISM • A FORCE BY WHICH MATERIALS ATTRACT OR REPEL OTHER MATERIAL • FORMED BY AN ELECTRIC CURRENT (ELECTROMAGNETISM) OR THE SPIN OF ELECTRONS (PERMANENT MAGNETS)

  39. MAGNETIC FIELD Wikipedia.com

  40. MAGNETIC FIELD eia.doe.gov THE MAGNETIC FIELD OF A BAR MAGNET

  41. MAGNETOSPHERE www-spof.gsfc.nasa.gov

  42. LIKE MAGNETIC CHARGES REPEL/ OPPOSITES ATTRACT eia.doe.gov

  43. GENERATOR • A GENERATOR IS A DEVICE THAT TURNS MECHANICAL ENERGY INTO ELECTRICAL ENERGY • THE PARTS ARE • A COIL OF WIRE • A MAGNET

  44. GENERATOR eia.doe.gov

  45. GENERATOR • A MECHANICAL FORCE MOVES THE WIRE COIL OR THE MAGNET CAUSING THE ELECTRONS OF THE WIRE TO MOVE

  46. GENERATOR • TO MAKE A GENERATOR WORK A MECHANICAL FORCE IS USED • TO MAKE A STRONGER GENERATOR USE: • A MORE POWERFUL MAGNET • MORE WIRE IN THE COIL • A MORE POWERFUL MECHANICAL SOURCE

  47. TURBINE • A DEVICE USED TO SPIN A PART (MAGNET OR COIL) OF THE GENERATOR • THE TURBINE CAN BE MOVED BY: • FLOWING WATER • WIND • STEAM

  48. FLOWING WATER • ADVANTAGES: • LITTLE POLLUTION • ‘FREE’ SOURCE DISADVANTAGES • COSTLY TO BUILD • MUST BE ON A RIVER • AFFECTS FISH MIGRATION

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