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Science Ch. 2 Guide
| Question | Answer |
|---|---|
| occurs only in the presence of a magnetic field | Induced Magnetism |
| groups of atoms in which the polarity is alligned in the same direction | Domains |
| an alloy made of three different metals, makes a strong magnet | ALNICO |
| makes up ALNICO | aluminum, nickel and cobalt |
| changes vabriations in electrical currents to sound waves | loudspeaker |
| a coil of wire that can become a electro magnet | armature |
| constantly switch the magnetic poles of a armature | commaultors |
| the region around a magnet where the magnet force acts | magnetic field |
| the two ends of a magnet that either point N or S | magnetic poles |
| the reigons around earth's atmosphere that shield us from harmful particals from the sun | van allen belts |
| northern lights | auora borealis |
| southern lights | auora australis |
| a magnetic that needs to be hooked up to a power source at all times, a temporary magnet | electromagnet |
| the current made by using a magnet and wire | induced current |
| changes kinetic energy of rotation into electrical energy | electric generator |
| changes electricity into kinetic energy of rotation | electric motor |
Created by:
marleene 8
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