Electromagnetism

As electrons move, they make

• A. electromagnetism.
• B. auroras.
• C. ferromagnetism.
• D. magnetic fields.

The process of creating a current in a circuit by changing a magnetic field

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. magnet

What is created when a magnet moves through a coil of wire?

• A. an electromagnet
• B. a ferromagnet
• C. a solenoid
• D. an electric current

Which of the following are two effects of Earth’s magnetic field?

• A. compass points to geographic north, auroras seen at both poles  
• B. compass points to magnetic north, auroras seen at both poles
• C. compass points to geographic south, auroras seen at the equator
• D. compass points to geographic north, auroras seen at the equator

What kind of magnet can be turned on and off?

• refrigerator magnet
• electromagnet
• magnetite
• iron

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

• brighter
• stronger
• weaker
• invisible

What is the flow of electricity?

• electric motor
• Electric current
• Electric eel
• electric circuit

A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

The picture above is an example of what?

• Magnetic field

• Electric field

• Repulsion

• Attraction