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Magnetism Ch 21
A force that attracts & repels metals.
14
Science
8th Grade
10/30/2011

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Term
Magnet
Definition
A object that attracts certain materials; steel, iron
Term
Magnetism
Definition
The force that is exerted by a magnet.
Term
Magnetic Poles
Definition
The parts of a magnet where it is strongest.
Term
Magnetic Field
Definition
The region around the magnet where it exerts its magnetic force.
Term
Magnetic Domain
Definition
A group of atoms wher the magnetic field is alligned.
Term
Electromagnetism
Definition
Magnetism that restults with a form of electric current.
Term
Electromagnet
Definition
A magnet that is created when sticking a piece of metal (iron or steel) in a coil of wire.
Term
Generator
Definition
A device that turns KE into Electrical Energy.
Term
Direct Current
Definition
A electric current that flows in one direction.
Term
Alternating Current
Definition
A flow of electric current that changes at regular intervals.
Term
Electric Power
Definition
The rate at which electrical energy is generated from another source.
Term
Watt
Definition
A unit of measurement.
Term
Kilowatt
Definition
A unit of power that is equal to one thousand watts.
Term
Kilowatt-Hour
Definition
Equal to a one kilowatt of power for a period of one hour.
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