Circuits
Electromagnets & Bar Magnets
Charges
Conductors/ Insulators
Misc.
100
The item that you can add to a circuit that makes it EASIER to turn on and off.
What is a Switch?
100
The three materials you need to make an electromagnet.
What is a wire, a nail, and a battery?
100
Name one way to create a static charge on a balloon (*hint: think back to our balloon experiment)
What is: rub it with a wool cloth?
100
A material that electricity can flow through.
What is a Conductor?
100
Term for an object that attracts some metals
What is a Magnet?
200
Name for the circuit in which both bulbs are in one row with only one wire of electricity flowing through them.
What is a Series Circuit?
200
Tell how the poles on magnets attract and repel.
What is: opposites attract (N/S and S/N) while like poles repel (N/N and S/S)
200
In electric charge, like charges __________ and unlike charges ________.
What is like charges REPEL; unlike charges ATTRACT.
200
Material that electricity cannot pass through.
What is an insulator?
200
True or false: a magnet won't always attract to objects that are usually magnetic
What is: FALSE. If it is not attracting those objects, it isn't a magnet.
300
Name for a circuit in which the there are at least two separate paths for electricity to flow through.
What is a Parallel Circuit?
300
Tell what would happen if you added MORE loops of wire on the nail for an electromagnet.
What is the magnetic field would get stronger.
300
Socks that are stuck together after taken out of the dryer is an example of this type of electricity.
What is STATIC electricity?
300
Give three examples of insulators.
What is wood, plastic, rubber, glass?
300
If you wrap a nail with wire and then run a current through the wire, what does the nail & wire combination become?
What is an Electromagnet?
400
Type of circuit that if one bulb goes out, the other will still stay lit.
What is Parallel Circuit?
400
Name at least 2 similarities between bar magnets and electromagnets.
What is: they are both magnets, they attract magnetic material, they have poles, etc.
400
If a balloon has an equal amount of positive and negative charge, it is ______________ .
What is neutral?
400
Give three examples of conductors
What is copper, aluminum, gold, silver, water?
400
Tell the purpose of a SWITCH in an electric current.
What is: to allow the circuit to be open or closed (turned on or off)?
500
Tell what would happen if a student connected a wooden spoon into the path of a circuit.
What is the bulb would not turn on because the wood is an insulator and electricity can't flow through it?
500
Name at least 2 differences between electromagnets and bar magnets.
What is: Electromagnet--can be turned on or off, can be made stronger or weaker, is man-made. Bar magnet--is permanent, always stays as strong or weak as it is, and is naturally made?
500
An item with a negative charge would _________ an item with a positive charge
What is Attract?
500
Which of the following does not belong: wood, penny, gold, wire
What is wood?
500
Explain why & how a compass always points North.
What is: Earth has magnetic poles. The North pole actually has a south-pole magnetic force, so the north end of the compass needle attracts toward that force at the North pole.
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