Unit 6 Test

A ____ keeps its magnetic properties even when it is not near other magnets.

• soft magnet

• permanent magnet

• electron magnet

• diamagnetic

Every magnet has two _____.

• compasses

• gauss

• fields

• poles

Placing the north pole of a magnet near the south pole of another magnet results in:

• an attractive force between the magnets

• a repulsive force between the magnets

• an electric force between the magnets

• no force between the magnets

A type of matter in which the magnetic fields of individual electrons cancel out, leaving each atom with zero charge.

• diamagnetic

• paramagnetic

• ferromagnetic

• electromagnetic

A material (like iron) with very strong magnetic properties.

• diamagnetic

• paramagnetic

• ferromagnetic

• electromagnetic

The difference between the direction a compass points and the direction of true north.

• magnetic declination

• geographic north

• magnetic domain

• paramagnetic

The unit used to measure the strength of a magnetic field.

• coulomb

• newton

• gauss

• watt

The magnetic field strength inside a current-carrying coil will be larger if the coil is wound around a: 

• vacuum

• wooden rod

• glass rod

• iron rod

The source of a material's magnetism is the: 

• charge if its protons

• mass of its neutrons

• spin of its electrons

• density of its nucleus

When current flows through a coil of a wire, you have a(n):

• superconductor

• electromagnet

• ceramic magnet

• semiconductor