Abeka 9th grade Physical Science Quiz 21

electron spin

the most important cause of magnetism in magnetic materials

lines of flux

the direction and strength of a magnetic field in indicated by these imaginary lines

lodestone

the form of the mineral magnetite use since ancient times as a natural compass

law of magnetic force

the principle that relates the force between 2 magnets

hard

a permanent magnet is made from a magnetically ________ material

permeability

how strong the magnetic force acts through a material is determined by the material's _______________

domain

a group of aligned atoms with on magnetic field

poles

regions of concentrated magnetism

diamagnetic

Diamond, which lacks, unpaired electrons and is slightly repelled by either pole of a magnet, is an _____________ substance.

paramagnetic

Aluminum, which has one unpaired electron and is slightly attracted by either pole of a magnet is a _____________ substance.