Abeka 9Th Grade Science Quiz 34

Front 1

The most important cause of magnetism and magnetic materials is ____.

Back 1

Electron spin

Front 2

A group of aligned atoms with a single magnetic field is a ____.

Back 2

Domain

Front 3

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 _____.

Back 3

Decrease

Front 4

A permanent magnet is made from a magnetically ____ material.

Back 4

Hard

Front 5

Regions of concentrated magnetism are called ____.

Back 5

Poles

Front 6

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

Back 6

Paramagnetic

Front 7

The direction and strength of a magnetic field is indicated by imaginary ____.

Back 7

Lines of flux

Front 8

The form of the mineral magnetite known since ancient times to have magnetic properties is ____.

Back 8

Lodestone

Front 9

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

Back 9

Diamagnetic

Front 10

How strongly the magnetic force acts through a material is determined by the material's _____.

Back 10

Permeability