Magnetism

If you wrap more coils around an electromagnet, it will become...

• brighter
• stronger
• weaker
• invisible

Are ALL metals magnetic?

• Yes
• No

Magnetic domains are  

• regions that may or may not be magnetized. 
• clusters of atoms randomly aligned
• regions of atoms magnetically aligned
• blocks of material

Natural magnets, such as lodestones, display ferrimagnetism.

• True
• False

The first practical use of natural magnets was navigation.

• True
• False

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

It is possible for a magnet to have only one pole.

• True
• False

Surrounding every magnet is a __________  __________.

• magnetic field
• electrical current
• another magnet

Magnets that are arranged like this will _______. 

• move away from each other (repel)
• move towards each other (attract)

These magnets will _______.

• move away from each other (repel)
• move toward each other (attract)