Electromagnetism

As electrons move, they make

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

The attraction or repulsion created by spinning electric charges

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

A device that converts electrical energy into mechanical energy

• A. Electromagnet

• B. AC generator

• C. DC motor

• D. Dynamo

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 can demagnetize a magnet?

• A. high altitudes
• B. high temperatures
• C. low altitudes 
• D. low temperatures

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

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

This picture best illustrates the construction of a(n)

• magnet

• electromagnet

• series circuit

• parallel circuit

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

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