electricity. static electricity the build up of electrons on the surface of an object

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ELECTRICITY Slide 2 STATIC ELECTRICITY THE BUILD UP OF ELECTRONS ON THE SURFACE OF AN OBJECT. Slide 3 AN ATOM Why electrons? Slide 4 ATOMIC PARTS ELECTRON= NEGATIVE PROTON= POSITIVE NEUTRON= NO CHARGE. eia.doe.gov Slide 5 STATIC ENERGY Rubbing a balloon on a wool sweater creates charges on the surfaces Slide 6 GAINING OF ELECTRONS O - - - - - - - - Slide 7 OPPOSITES ATTRACT O O - + Slide 8 STATIC ELECTRICITY Slide 9 VAN DE GRAAFF GENERATOR mos.org Slide 10 Van De Graaf Generator Slide 11 LIGHTNING Slide 12 STATIC ELECTRICITY Alaska.net Slide 13 CURRENT ELECTRICITY THE FLOW OF ELECTRONS THROUGH A CONDUCTOR. Slide 14 CURRENT ELECTRICITY Slide 15 BATTERIES STORED ELECTRICITY All-Battery.com Slide 16 BAGDAD BATTERY BCE 250 smith.edu Slide 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. Slide 18 ELECTRON SHELLS web.jjay.cuny.edu Slide 19 ZINC ATOM chemicalelements.com NEEDS TO GAIN OR LOSE 30 2 Slide 20 COPPER ATOM chemicalelements.com Slide 21 CARBON ATOM chemicalelements.com Slide 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 Slide 23 CIRCUIT A CONDUCTOR WHICH CONNECTS A PATHWAY BETWEEN THE CATHODE (+) AND ANODE (-) wikipedia.org CATHODEANODE Slide 24 WET CELL BATTERY /lemcellguard.com/battery Slide 25 DRY CELL BATTERY wikipedia.org Slide 26 MERCURY BATTERY wikipedia.org Slide 27 POTATO BATTERY www.miniscience.com Slide 28 SIMPLE POTATO BATTERY pbskids.org/zoom/activities Slide 29 500 POUND POTATO BATTERY latteier.com/potato Slide 30 DIFFERENT TYPES OF WIRING SERIES PARALLEL cosmology.berkeley.edu Slide 31 PARALLEL AND SERIES PARALLEL: SAME POWER LONGER TIME SERIES: MORE POWER SAME TIME Slide 32 CURRENT ELECTRICITY orkneypics.com Slide 33 SO WHAT IS ELECTRICITY? aecl.ca/kidszone Slide 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 Slide 35 GALVANOMETER A device that detects the flow of electricity Slide 36 ELECTROMAGNET AN ELECTRIC CURRENT FLOWING THROUGH A WIRE FORMED A MAGNETIC FORCE AN ELECTROMAGNET CAN BE SHUT OFF Slide 37 TO BUILD A STRONGER ELECTROMAGNET USE: MORE WIRE IN THE COIL A MORE POWERFUL SOURCE OF ELECTRONS Slide 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) Slide 39 MAGNETIC FIELD Wikipedia.com Slide 40 MAGNETIC FIELD eia.doe.gov THE MAGNETIC FIELD OF A BAR MAGNET Slide 41 MAGNETOSPHERE www-spof.gsfc.nasa.gov Slide 42 LIKE MAGNETIC CHARGES REPEL/ OPPOSITES ATTRACT eia.doe.gov Slide 43 GENERATOR A GENERATOR IS A DEVICE THAT TURNS MECHANICAL ENERGY INTO ELECTRICAL ENERGY THE PARTS ARE A COIL OF WIRE A MAGNET Slide 44 GENERATOR eia.doe.gov Slide 45 GENERATOR AA MECHANICAL FORCE MOVES THE WIRE COIL OR THE MAGNET CAUSING THE ELECTRONS OF THE WIRE TO MOVE Slide 46 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 Slide 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 Slide 48 FLOWING WATER ADVANTAGES: LITTLE POLLUTION FREE SOURCE DISADVANTAGES COSTLY TO BUILD MUST BE ON A RIVER AFFECTS FISH MIGRATION