Types of magnets

A magnetic domain is where magnetic fields of atoms:

• point in different directions

• point in the same direction

• all point north

• all point south

If magnetic fields of atoms point in all directions, the material is:

• a permanent magnet

• a temporary magnet

• non magnetic

• a hard magnetic material

Examples of magnetic materials include:

• plastic

• iron

• glass

• nickel

• cobalt

Tags

NGSS.MS-PS2-3

A magnetic material becomes magnetic when (a)   line up in the same direction.

Tags

NGSS.MS-PS2-3

A (a)   magnetic material can lose it's magnetic field quickly.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A (a)   magnetic material keeps it's magnetic field for a long time.

What kind of magnet is a nail?

• a permanent magnet

• a temporary magnet

• it is non magnetic

• a hard magnetic material

Permanent and temporary magnets are classified on the basis of how long they remain magnetised.

• True

• False

(a)   magnets retain their magnetism in the absence of any external magnetic field.

Temporary magnets acts as magnets only when they are within a strong magnetic field.

• Yes

• No

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5