Magnetism
Electricity
Circuit
Conductors and Insulators
Electromagnets
100
What would happen if the north ends of two magnets were close together?
What is repel?
100
Socks taken from a clothes dryer that stick together or a lightning bolt in the sky are examples of ____________.
What is static electricity?
100
Is a circuit open or closed if you haven't turned on the switch?
What is open?
100
What is a material that lets electric current pass through?
What is a conductor?
100
True or False: An electromagnet is a permanent magnet.
What is False? An electromagnet can be turned on or off. Once the circuit is broken, the magnetism is lost.
200
If a south end of a magnet is close to a north end of a magnet, the magnets will _________.
What is attract?
200
True or False: Like charges attract and unlike charges repel.
What is False? Like charges repel and unlike charges attract.
200
What supplies current to an electrical circuit?
What is a battery (or other electrical source)?
200
What is a material that blocks an electric current from passing through?
What is an insulator?
200
An electromagnet must be part of an electrical ______.
What is circuit?
300
True or False: All magnets have the same shape and size.
What is False?
300
If you rub your hair on a balloon and the balloon becomes negatively charged, what charge will your hair have?
What is a positive charge?
300
What part of a circuit does electrical energy change from one form to another?
What is a load (lightbulb)? This is where the energy changes to produce heat or light.
300
Which of these materials is not a conductor: copper, aluminum, gold, or wood?
What is wood?
300

An electromagnet is made up of what three items?

What is an iron bar (nail), battery, and a wire?

400
True or False: All magnets have a north and south pole.
What is True?
400

Two negatively charged objects are 10 mm apart and the electric force is 10 N. What will happen if the distance is decreased?

What is the electric force will increase?

400
True or False: When you turn on a light, the switch is opening the circuit.
What is False? A switch closes the circuit to turn on the light.
400
Which of these materials is a conductor: rubber, glass, air, silver?
What is silver?
400

Current electricity that is produced by using mechanical energy to create electrical energy, using movement through a magnetic field.

What is an electric generator?

500
Will a magnet attract copper, rubber, iron, or plastic?
What is iron?
500
Naturally-occurring electricity that occurs when there is a buildup of negative charges in one place. 
What is static electricity?
500
An electrical circuit is made up of a connector (wire), a load (lightbulb), a switch, and a ____________.
What is a battery (or electrical source)?
500
True or False: Pure water is a conductor.
What is False? The salts and other materials in water are conductors though. So, don't mix water with an electrical circuit!!!!
500

How do you increase the strength of an electromagnet?

What is increase the number of wire coils/turns?
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