Electromagnets

As electrons move, they make

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

A device that converts electrical energy into mechanical energy

• A. electromagnet
• B. electromagnetic induction
• C. electric motor
• D. electromagnetism

A magnet will pick up an object that is made of...

• plastic

• iron or steel

• glass

• copper

The strongest parts of the magnet are ...

• fronts

• backs

• poles

• middle

A north pole and a south pole will attract.

• True
• False

The picture is an example of an:

• Electric circuit
• Electromagnet
• Electric nail
• Electric power cell

To make this electromagnet stronger you could:

• use less wire

• have fewer wire coils around the nail

• have more wire coils around the nail

• use a plastic core

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

Electric current flowing through a wire produces

• static electricity
• an open circuit
• a permanent magnet
• a magnetic field

When running a current through a wire, what do the blue lines represent?

• The wire spinning

• A magnetic field that was created

• Electrons leaving

• Electricity