Electromagnetism

What kind of magnet can be turned on and off? (Man-made magnet)

• refrigerator magnet
• electromagnet
• magnetite
• iron

What is an electromagnet?

• a magnet that creates an electric current
• a device that created electricity 
• a magnet that creates kinetic energy
• a device that creates a magnet

A turbine is used to ________ the magnet in a generator.

• rotate
• electrify
• attract
• repel

A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

An example of an insulator is:

• iron
• silver
• copper wire
• rubber

An example of a conductor is :

• a glass paperweight
• a plastic cap
• a metal screw
• a wooden handle

What uses induction to increase or decrease the voltage of alternating current?

• Galvonometers
• Transformers
• Armatures 
• Generators 

The attraction or repulsion created by spinning electric charges

• A. electric generator
• B. magnetic force
• C. solenoid
• D. electromagnet

Any material that attracts iron or materials containing iron

• A. electric generator
• B. solenoid
• C. magnet
• D. magnetic force

One of two points, such as the ends of a magnet, that have opposing magnetic qualities

• A. magnetic pole
• B. magnetic force
• C. transformer
• D. electric generator