I started this class talking about magnets having a north and south pole and how they attract and repel each other. This is different than gravity which we talked about last week because gravity only pulls matter together, it doesn’t repel it. I also talked about how when magnets are broken in half each piece has a north and south pole. It is like there are a bunch of little magnets all stuck together to make a larger one. You can use the magnets from Popular Playthings Magnetic Match Rings<\/a> to demonstrate this also because the donut magnets can be separated. I like these because it is easy to feel and demonstrate repulsion with these.<\/p>\n <\/p>\n What is Magnetic?<\/strong><\/p>\n You can have the kids check out what is attracted to magnets and what isn’t by bringing in a bunch of objects. I have some non-metal items here, but mostly I have different metals. The little coins are plated with silver<\/a>, gold<\/a>, and copper. You can separate Canadian money from US or Australian money with a magnet. Canadian 1, 2, 5, 10, and 25 cent coins are magnetic because they have steel cores, but coins from most other countries are not magnetic.<\/p>\n Repulsion From a Moving Magnet<\/strong><\/p>\n Some metals like iron, nickel, and steel are strongly attracted to magnets. Other metals like copper and aluminum are repulsed when exposed to a moving magnet, as seen in these videos<\/a>. You can see that moving magnets can generate an electric field.<\/p>\n![\"IMG_1776\"](\"https:\/\/lolliesorcandy.comwp-content\/uploads\/2017\/05\/IMG_1776-292x300.jpg\")
<\/p>\n![\"IMG_1777\"](\"https:\/\/lolliesorcandy.comwp-content\/uploads\/2017\/05\/IMG_1777-300x262.jpg\")
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