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Magnetism-Chapter 21
Magnetism
12
Science
7th Grade
11/14/2013

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Term
magnetism
Definition
force of attraction or repulsion by magnetic materials
Term
pole
Definition
end of a magnet
Term
magnetic field
Definition
describes the region of magnetic force around a magnet
Term
magnetic lines of force
Definition
lines that show the shape of a magnetic field
Term
magnetic domain
Definition
groups of atoms whose magnetic poles are all lined up in the same direction
Term
magnetic induction
Definition
process by which a material can be made into a magnet
Term
magnetosphere
Definition
region of Earths magnetic field
Term
electromagnetism
Definition
relationship between electricity and magnetism
Term
electromagnetic induction
Definition
process by which an electric current is produced by moving a wire in a magnetic field
Term
electromagnet
Definition
temporary magnet made by wrapping a current-carrying wire around a metal core
Term
transformer
Definition
device in which alternating current in one coil of wire induces a current in a second coil of wire
Term
electric motor
Definition
device that changes electrical energy into mechanical energy
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