Magnetic Domains

Magnets are made of tiny sections of magnetic fields that are aligned to produce a larger magnetic field. These are called _____.

• magnetic domains

• magnetic fields

• magnetic sections

• electromagnets

You know this substance is magnetized because

• all the domains have right angles

• the arrows are drawn in red

• the domains are aligned

• the domains are random

Tags

NGSS.MS-PS2-3

A permanent magnet

• has no magnetic domains until a magnet is near it

• has magnetic domains aligned only when another magnet is near it

• has magnetic domains aligned all the time

• has no magnetic domains

How can a material become magnetized?

• Placing the object into a strong magnetic field

• Heating the object

• Arrange the magnetic domains randomly

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In un-magnetized materials the domains (electrons) are __________ aligned.

• super

• slightly

• randomly

• always

Tags

NGSS.MS-PS2-5

A temporary magnet

• has no magnetic domains until a magnet is near it

• has magnetic domains aligned only when another magnet is near it

• has magnetic domains aligned all the time

• has no magnetic domains

A group of atoms that has all like poles pointing in the same direction are called

• magnetic forces

• magnetic fields

• magnetic domains

• magnetic poles

Which item would the magnetic domains be the most unaligned?

• glass jar

• steel nail

• bar magnet

A magnet must always have two poles, even if cut in half, because

• A magnet is made up of tiny magnetic domains that are aligned.

• Each pole divides in half and the magnetic field becomes weaker.

• Magnetic domains are out of alignment.

You can cause a permanent magnet to lose its magnetic field if

• You forcefully vibrate the object, causing its domains to fall out of alignment.

• By rubbing an iron object with a permanent magnet in the same direction repeatedly.

• You freeze the object.

• You connect the north and south poles of two magnets.