Wednesday, March 6, 2013
Dancing And Sticking Salt Mystery- Molly Carroll and Pearl
Claim: The salt sticks to the plastic tube becasue the tube is an insulator. The salt bounces off metal plate because the plate is a conductor.
Evidence: When the charged conductor (metal plate) is brought up to the salt the salt bounces off the metal plate and it doesn't stick to it. When the charged insulator (tube) is brought up to the salt the salt sticks to the tube.
Reasoning: The salt sticks to the tube becasue the tube is a charged insulator. The insulator is charged positively so that is why the nuetral salt sticks to it. The Salt bounces off the charged conductor becasue the charge is not evenly spread out around the whole surface of the metal plate. The Salt doesn't stick to the plate for long before it bounces right off .
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