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Background For Teachers:
Intended Learning Outcomes:
Invitation to Learn
“I’m Juliet Electron and I’m looking for Romeo Proton. Will you (point to students) help me find him?”
When you walked across the carpet on a dry winter day and touched someone . . . Zap!. . . a small electrical shock happened. This is called static electricity, or the story of Romeo Proton and Juliet Electron. Static electricity is a buildup of charges on non-metallic materials. When objects are rubbed, their electrons move from one atom, or material, to another causing an unbalance in charges and creating an electric current. Electrons have a negative charge and the materials that lost the electrons become positively charged by the same amount. Electrons aren’t really lost, they just move.
When you walked across carpet you picked up extra Juliet Electrons. When you extended your finger to touch Romeo Proton, the extra electrons on you caused the electrons on neutrally balanced Romeo to move away from your finger. This caused a positive charge on Romeo.
“A-ha!” exclaims Juliet.
Romeo now has a positive charge and all the extra electrons on Juliet are attracted to positively charged Romeo. (opposite charges attract) Your lovebird, Juliet Electron, is not going to stay stationary any longer. An electric current has developed. When she sees Romeo Proton getting closer, she runs to him and gives him a shock! (Juliet, spying Romeo, runs toward him, extends her finger, touches his ear and he pretends to receive a shock.) It’s static electricity! (End of play. Thunderous applause!)
Since Juliet was practicing devilish pranks on Romeo, let’s end by seeing how “near to the angels” some of you may become with a halo activity.
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