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U1C2A2 Before RS Globe-Fearon Text (red textbook) • Read pages 456-457 and answer the questions on your handout with your group. Magnet Basics (a history of magnets) What is a magnet? •An object that is attracted to magnetic material What is a magnetic field? • the region of magnetic force around a magnet Teacher Demo! magnetic fields • Where is the magnetic field the strongest? • Where is the magnetic field the weakest? magnetic fields • Where is the magnetic field the strongest? • Where is the magnetic field the weakest? magnetic fields • Where is the magnetic field the strongest? • Where is the magnetic field the weakest? magnetic fields • Where is the magnetic field the strongest? • Where is the magnetic field the weakest? magnetic fields • Where is the magnetic field the strongest? • Where is the magnetic field the weakest? Is the magnetic field 3-D? YES!!! magnetic fields Now It’s Your Turn! (Use One Magnet Bar) Question: •What makes/causes a magnetic field? Answer: •When the magnetic domains line up in an object a magnetic field is created. Magnetic Domains Video demagnetized magnetized magnetic fields • Where is the magnetic field the strongest? • Where is the magnetic field the weakest? Your Turn, Again! (Using Both Magnets) North South Label North and South on each magnet. North South South North North South Chalk and paperclips at lab station chalk drawings 1. Place 8 magnets/domains in your magnet 2. How can you make your magnet weaker? 3. How can you demagnetize your magnet? 4. Cut you magnet in 1/2.
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