Magnets!

What is an object that gives off an external magnetic field?

• ruler
• paperclip
• magnet
• pop can

Which magnets will attract?

• south/south
• north/south
• north/north

Which of these is NOT a rule of magnetism?

• All magnets have a north and south pole.
• Opposites attract and likes repel.
• Aluminum is always magnetic.
• Magnetic field goes out the north pole and back in the south pole.

This picture is showing an example of what?

• attract
• magnetic field
• repel
• electromagnet

How does Earth's magnetic field protect us?

• It protects Earth from meteors.
• It protects Earth from solar wind.
• It protects Earth from alien attack.
• It protects Earth from rockets.

What type of magnets must have an electrical current running through it?

• permanent magnets
• electromagnets

What type of magnets will emit a magnetic field without an external source of power?

• permanent magnets
• electromagnets

Magnets are usually made from what material?

• copper and steel
• iron and nickel
• iron and steel
• aluminum

When and where was the term "magnet" first used?

• 200 B.C. - Romans
  
• 600 B. C. - Romans
  
• 700 B.C. - Scientists 
• 600 B.C. - Greeks 

Magnets can be found in speakers, rollercoasters, trains, toys, computers, and clocks.

• True
• False