Magnetism Static Electricity Circuit Conductors and Insulators Electromagnets

100

repel
What would happen if the north ends of two magnets were close together?

100

static electricity
Socks taken from a clothes dryer that stick together is an example of ____________.

100

open
Is a circuit open or closed if you haven't turned on the switch?

100

a conductor
What is a material that lets electric current pass through?

100

False. An electromagnet can be turned on or off. Once the circuit is broken, the magnetism is lost.
True or False: An electromagnet is a permanent magnet.

200

attract
If a south end of a magnet is close to a north end of a magnet, the magnets will _________.

200

False. Like charges repel and unlike charges attract.
True or False: Like charges attract and unlike charges repel.

200

a battery (or other electrical source)
What supplies current to an electrical circuit?

200

an insulator
What is a material that blocks an electric current from passing through?

200

True
True or False: An electric crane is an example of an electromagnet.

300

False
True or False: All magnets have the same shape and size.

300

a positive charge
If you rub your hair on a balloon and the balloon becomes negatively charged, what charge will your hair have?

300

a load (example: lightbulb) This is where the energy changes to produce heat or light.
What part of a circuit does electrical energy change from one form to another?

300

wood
Which of these materials is not a conductor: copper, aluminum, gold, or wood?

300

True. Even when you take it off the refrigerator, it is still magnetic.
True or False: A refrigerator magnet is a permanent magnet.

400

True
True or False: All magnets have a north and south pole.

400

False. Only electrons (negative charge) move from one object to another.
True or False: Positive charges move from one object to another.

400

False. A switch closes the circuit to turn on the light.
True or False: When you turn on a light, the switch is opening the circuit.

400

silver
Which of these materials is a conductor: rubber, glass, air, silver?

400

circuit
An electromagnet must be part of an electrical ______.

500

iron
Will a magnet attract copper, rubber, iron, or plastic?

500

True
True or False: A lightning bolt occurs when static electricity is created in the sky.

500

a battery (or electrical source)
An electrical circuit is made up of a connector (wire), a load (lightbulb), a switch, and a ____________.

500

False. The salts and other materials in water are conductors though. So, don't mix water with an electrical circuit!!!!
True or False: Pure water is a conductor.

500

an iron bar (nail), battery, and a wire
An electromagnet is made up of what three items?

Electricity and Magnetism

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