What Our Lives Would Be Like without Magnets

Nov 27, 2014

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What Our Lives Would Be Like without Magnets. Their influence in our lives and the world. What is a magnet?. A material or object that produces a magnet field is due to the motion of electric charge

francis-conley

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What Our Lives Would Be Like without Magnets

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What Our Lives Would Be Like without Magnets Their influence in our lives and the world
What is a magnet? • A material or object that produces a magnet field • is due to the motion of electric charge • Plate tectonics explain the large scale motions of the Earth's lithosphere, causing magnetic rocks to exist.
What do you know about magnets? • Use in everyday life • Attract objects • Most have two poles • Have a space around them called magnetic field
Where do they come from? • Nature • Man-made
Headphones Stereo speakers Computer Telephone receivers Phone ringers Doorbell ringers Seal around refrigerator doors Credit card magnetic strip Television coils Computer hard drive CD and DVD spinner Dishwashers Refrigerators Fans Cell phones Starter motor of cars And many more Things that need magnets
Types of Magnets • Magnetic metallic elements (more common): • Iron ores, cobalt, and nickel • Composites (common): • Powder iron and ceramic • Aluminum and other materials • Resin and magnetic powder • Others
What do you want to know about magnets? • Think about magnets • Develop an idea • Write down questions • Make list • Discuss ideas with partner • Present to class
Where to learn about magnets • In books • On the web • Manipulating magnets • Thinking about things that require magnets • Searching for objects that need magnets
Where do we go from here? • Make our own magnets • Develop activities involving magnets • Educate friends • Discuss about the world in relation to magnets
Bibliography; • NASA’s KSNN - why do magnets work: http://ksnn.larc.nasa.gov/k2/videos/s_magnetsWork_H.html • ISIS Data Analysis: http://www.isis.rl.ac.uk/DataAnalysis/e-science/2004_povs/2004_povs.html • Wikipedia: http://en.wikipedia.org/wiki/Magnet • KidsKonnect: http://www.kidskonnect.com/content/view/90/27/

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