Magnetism

Text: pages 572-593. 3 day unit.

Conceptual Text:  pages 562-594.  7 day unit.

Objectives

After completing this section, students will:

1.    be able to describe the properties of a magnet,

2.    be able to explain the principal of electromagnetic induction,

3.    be able to compare and contrast motors and generators,

4.    be able to explain how transformers work, and compare and contrast step up and step down transformers.

Activities

1.    A lab in which magnets are examined, including superconductivity and diamagnetism.

2.    An extra credit internet lesson.

Web Research Links

To optimize machine performance, close each hyperlink window when finished with the site.

1.    Magnetic Poles & Fields              http://www.sciencemaster.com/jump/physical/magnetic_fields.php

2.    Magnetic Field Applet               http://www.micro.magnet.fsu.edu/electromag/java/magneticlines/

3.    Try the levitating magnets        http://web.mit.edu/jbelcher/www/java/lev_mag/lev_mag.html#Inst

4.    How electromagnet works        http://www.howstuffworks.com/electromagnet.htm

5.    The Earth's Poles                            http://www.accessexcellence.org/arc/magnetic.html

6.    Diamagnetism Diagram            http://kuestler.bei.t-online.de/whatis.htm   

7.    How a speaker works                  http://www.micro.magnet.fsu.edu/electromag/java/speaker/

8.    Research guitar pickups     A.       http://www.physlink.com/Education/AskExperts/ae331.cfm  

                                                           B.       http://ucsu.colorado.edu/~appela/guitarpickups/

9.    Magnet facts                                http://www.technicoil.com/magnetism.html

Ask the experts                                  http://www.physlink.com/Education/AskExperts/ae10.cfm

Wondermagnet magnet FAQ      http://www.wondermagnet.com/dev/magfaq.html

The viewing film in class                   http://www.wondermagnet.com/dev/viewingfilm.html

Superconductor experiment         http://www.fieldlines.com/other/superconductor.html

Levitation                                            http://www.execpc.com/~rhoadley/magsuper.htm

Dimagnetism                                      http://www.fieldlines.com/other/diamag1.html

                                                                http://www.fieldlines.com/other/diamag2.html

                                                                http://diamagnetics.users2.50megs.com/                                           

Supermagnet experiments            http://www.eskimo.com/~billb/neodemo.html

Virtual School            http://www.accessed.qld.edu.au/home/mirror/contents/topic08.htm

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Last modified: November 13, 2010

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