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10 Cards in this Set
- Front
- Back
The most important cause of magnetism and magnetic materials is ____. |
Electron spin |
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A group of aligned atoms with a single magnetic field is a ____. |
Domain |
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If the force between two magnets is 32 N when they are 3.0 cm apart, when they are 12 cm apart the force will _____. |
Decrease |
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A permanent magnet is made from a magnetically ____ material. |
Hard |
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Regions of concentrated magnetism are called ____. |
Poles |
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Aluminum, which has one unpaired electron and is slightly attracted by either pole of a magnet, is a _____ substance. |
Paramagnetic |
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The direction and strength of a magnetic field is indicated by imaginary ____. |
Lines of flux |
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The form of the mineral magnetite known since ancient times to have magnetic properties is ____. |
Lodestone |
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Diamond, which lacks unpaired electrons and is slightly repelled by either pole of a magnet, is a _____ substance. |
Diamagnetic |
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How strongly the magnetic force acts through a material is determined by the material's _____. |
Permeability |