elecricity and magnetism ppt

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Post on 26-Jun-2015

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Presentation to teach electricity to 4th- 5th -6th graders.

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  • 1. ELECTRICITY ANDMAGNETISM

2. ELECTRICITY IN NATURE ELECTRICITY AT HOME 3. WHERE CAN YOU FINDELECTRICITY? 4. PLUG SOCKETSWITCH 5. Electricity wires havecopper insideBULBS 6. WHAT IS ELECTRICITY?Matter is made of very small particles called atoms.An atom has a balance (equal charge) of protonsand electrons (positive and negative charge) 7. Because of a source of energy on the atom the electronsmove from one atom to another and that producesELECTRICITY. 8. Thales was the first to notice staticelectricity around 600 BC. In 600B.C.Thales of Miletus writes about amber becoming chargedby rubbing he was describing what we now call staticelectricity. 9. STATIC ELECTRICITY: somematerials like plastic loose electronseasily 10. Rub an inflated balloon or a combon your head or a wool sweaterand.. 11. Stick the balloonto a wall...Bring the balloon close to one end ofthe popsicle stick, and watch it rotateon the spoon! 12. -Unlike charges attract each other.-Like charges repel each other. 13. ENERGY SOURCES: we needenergy to generate electricity1- Renewable means that never run-out: sun, wind, water, .. 14. 2-Non renewable sources are more contaminating: oil,gas, batteries.. and will run out in the future. 15. SAFETY ADVICE.-Never put your fingers or any other objects inelectrical sockets 16. -Never use electrical devices near water or touchswitches with wet hands. 17. -Always hold the plug by the plastic part. 18. -Don't use a device with damaged wires. 19. END of the 1rst session.