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ch4studyguide - Chapter 4: Model of Magnetism Study Guide...

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Chapter 4: Model of Magnetism Study Guide Experiments with Magnetism Geographical north = magnetic south Geographical south = magnetic north Rubbing a ferromagnetic object w/ magnet makes object magnetic N pole of magnet is attracted to south pole Scientific Models Good model determined by: 1) Used to explain observations from experiments already done 2) Can guide making of predictions about experiments not yet done If predictions are confirmed by experiments, scientists retain model help explain new observations If results of new experiments differ from predictions, scientists use new evidence to modify model so can explain new set of observations Initial Model for Magnetism What are the appropriate symbols to use for entities inside nail? Entities are represented by N and S symbols Better Model for Magnetism After a magnetized object is shaken/hit, the magnetic domains become distorted again = demagnetized Can magnetize a nail without touching it
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ch4studyguide - Chapter 4: Model of Magnetism Study Guide...

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