Unformatted text preview: riction or by contact.
• A statement that electrons move between the balloon and the fur. (Students do not
need to specify that the balloon will become negatively charged, or identify the
charge that remains on the fur after contact.)
• A description of the charge separation that occurs on the ceiling.
• An explanation of the process of inducing a charge.
• A statement that opposite charges attract.
Two procedures are required to completely address the empirical aspect of the question.
• A procedure is required to determine the type of charge on the balloon. The
response must include instructions and equipment needed. The procedure must
result in the determination of the nature of the charge. • A procedure is required to determine if there is a relationship between the amount of
rubbing and the amount of charge developed on an inflated balloon. The response
must include instructions and equipment needed. Instructions must specify repeated
trials, and identify both the manipulated and re...
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- Fall '09