By Janice VanCleave
The fitting technology reasonable suggestion books. wonderful technology initiatives Janice VanCleave's Magnets* How does a compass work?* what's a magnetic field?* how are you going to make a magnet with electricity?Janice VanCleave's Magnets contains 20 basic and enjoyable experiments that let you notice the solutions to those and different attention-grabbing questions on magnets, plus dozens of extra feedback for constructing your personal technological know-how reasonable initiatives. know about magnetic poles utilizing a bar magnet, paper, and string; approximately magnetic strength fields with a compass, a pencil, and a sheet of paper; and masses extra. All experiments use low-cost family fabrics and contain no less than guidance and freshen up. young children a while 8-12 additionally on hand within the fabulous technological know-how tasks sequence: Janice VanCleave's Animals Janice VanCleave's Earthquakes Janice VanCleave's electrical energy Janice VanCleave's Gravity Janice VanCleave's Machines Janice VanCleave's Molecules Janice VanCleave's Microscopes and Magnifying Lenses Janice VanCleave's Volcanoes Janice VanCleave's climate
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Extra resources for Janice VanCleave's Magnets: Mind-boggling Experiments You Can Turn Into Science Fair Projects
Why? One back-and-forth motion is called an oscillation. The number of oscillations made by the hanging nail varies with the distance you are from the magnetic north or south pole. The slowest oscillation would be at the magnetic equator (the imaginary line between the north and south magnetic poles that divides the earth in half). The oscillations increase as you approach either the north or south magnetic pole. The magnetic lines of force are closer at the poles and thus have a stronger pull on the magnetized nail, causing it to swing faster.
Html Página 2 de 2 15/11/2004 Document Página 1 de 1 Page 55 the experiment, with the results of the experiment printed on it. A summary stating the results should be printed at the bottom of the map. Show Time! Simulate the testing of the earth's magnetic field closer to its magnetic poles by placing a magnet near the hanging nail. Count the oscillations of the nail with the magnet at different distances from the nail. Use this experiment as part of your display. Attach the string to a support placed across the top of your project display, with the nail hanging freely in the center of the project.
Check It Out! Like a bar magnet, the earth has a magnetic field around it. This field, called the magnetosphere, protects the earth from powerful space radiation. Read about this protective shield. You could include this information in an oral report and create a diagram showing the shape of the magnetosphere with its tail-like extension trailing outward toward the sun. html 15/11/2004 Document Página 1 de 1 Page 48 12— Dipper Problem How can you follow the direction of magnetic lines of force around a magnet?