24 & 28 April Science 7 Magnetic force vs. distance and Static electricity

Try at least 2 of the 3 techniques to examine the relationship of distance to magnetic force. Measure at least 5 distances for each. Keep good records of your methods and results. Make two graphs showing the relationship. http://rfrazier.msblogs.aes.ac.in/2015/04/22/22-april-science-7-how-does-distance-affect-the-size-of-the-magnetic-force/

Static electricity


Positive and Negative

Defined: When a glass rod is rubbed with silk, the glass becomes positively charged.

When a rubber rod is rubbed with wool, the rubber becomes negatively charged.

Try the following simulations:



Historical theories:





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