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Electricity and
ism
Iron filings cluster around the
north and south poles of a bar
because of ic
force. ic force is exerted
through a ic field,
which is outlined by the iron
filings. This field is caused by
negatively charged electrons
spinning in the atoms.
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Authors
Margaret K. Zorn
Science Writer
Education Division Yorktow n, VA
Washington, .
Dinah Zike
Cathy Ezrailson Educational Consultant
Science Department Head Dinah-Might Activities, Inc.
Academy for Science and Health Professions San Antonio, TX
Conroe, TX
Series Consultants
CONTENT READING ACTIVITY TESTERS
Jack Cooper Barry Barto Nerma Coats Henderson
Ennis High School Special Education Teacher Pickerington Lakeview Jr. High
Ennis