Conductors & Insulators
Which of the following is a conductor?
A. Plastic
B. Rubber
C. Metal
D. Paper
C. Metal
This part of the circuit provides the electrical energy to make the circuit work.
Battery
These two ends of a magnet are called north and south poles. Two like poles would _____ and two different poles _____.
Two like poles Repel and two different poles Attract
What in incorrect about this statement & what is the correct answer?
"A circuit can work even if there’s a gap in the wires because the electricity will jump across the gap."
Error: Electricity cannot jump across a gap in the circuit. A closed circuit is needed for electricity to flow.
This type of electricity occurs when there is an imbalance of charges on the surface of an object.
Static Electricity
Which of the following is an insulator?
A. Penny
B. Cloth
C. Silver
D. Paper Clip
B. Cloth
A lightbulb is considered the _____ in a circuit.
Load
This type of magnet is created when an electric current passes through a wire, which is often wound into a coil. It can be turned off and on.
Electromagnet
What in incorrect about this statement & what is the correct answer?
"Magnets always attract each other, no matter which poles are facing."
Error: Magnets with like poles facing each other repel, not attract.
When you rub a comb through your hair, you can attract small pieces of paper. This happens because the comb gains this type of charge.
Negative charge (electrons)
What is the difference between an insulator and a conductor?
A conductor is a material that allows an electric current to flow easily through it.
An insulator is a material that does not allow an electric current to flow easily through it.
What will happen when you remove a bulb from a series circuit?
The other light bulb would turn off.
Which type of magnet is a permanent magnet?
A. Bar Magnet
B. Electromagnet
A. Bar Magnet
What in incorrect about this statement & what is the correct answer?
"In a series circuit, if one lightbulb goes out, the rest of the lights will stay on."
Error: In a series circuit, if one lightbulb goes out, the whole circuit will stop working, and all lights will go out.
Name an example of static discharge
(Answers may vary)
Rubbing feet on carpet and shocking a doorknob, static shock from clothes out of a dryer, and lightning
This material, which is used to coat electrical wires, prevents electricity from escaping and is a good insulator.
Plastic
This type of circuit allows electricity to flow through multiple paths, so if one light goes out, the others stay on.
Parallel Circuit
The space around a magnet where its magnetic force can be felt is called this.
Magnetic Field
What in incorrect about this statement & what is the correct answer?
"Electricity is never used to create a magnetic field."
Error: Electricity can create a magnetic field, as seen in electromagnets.
Electricity that humans create/control is called ______ electricity.
Human-harnessed electricity
The filament in a light bulb is considered a conductor or an insulator?
Conductor
What materials are needed to create a simple circuit?
Battery (Power source), wires (conductor), and a lightbulb (load)
Name one example of a permanent magnet and one example of an electromagnet.
(Answers may vary)
Permanent magnet examples: Whiteboard, Fridge magnets, pole magnet, compass needle
Electromagnet examples: MRI machine, Crane Magnet, Electric Motors, Doorbells
What in incorrect about this statement & what is the correct answer?
"When you walk across a carpet and touch a doorknob, the shock you feel happens because the doorknob gives you extra electricity."
Error: The shock happens because your body built up extra electrons from the carpet, and when you touch the doorknob, the electrons jump from you to the doorknob.
Name one example of naturally occurring electricity and one example of human-harnessed electricity.
(Answers may vary)
Naturally occurring electricity examples: Lightning, electric eels, static electricity
Human-harnessed electricity examples: Nuclear power, crank flashlights, wind-turbine, and microwave