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

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Presentation on theme: "ELECTRICITY. STATIC ELECTRICITY  THE BUILD UP OF ELECTRONS ON THE SURFACE OF AN OBJECT."— Presentation transcript:

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 GRAAFF GENERATOR 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 NEEDS TO GAIN OR LOSE 30 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 (-) wikipedia.org CATHODEANODE

24 WET CELL BATTERY /lemcellguard.com/battery

25 DRY CELL BATTERY wikipedia.org

26 MERCURY BATTERY 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A MECHANICAL FORCE MOVES THE WIRE COIL OR THE MAGNET CAUSING THE ELECTRONS OF THE WIRE TO MOVE

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

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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