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Vocabulary 1
Vocabulary 2
Vocabulary 3
Circuits
Magnets
100
The buildup of electric charges in one place.
Static electricity
100
The area around electric charges, where electric forces can act.
Electric field
100
A magnet that has coils of current-carrying wire around an iron core.
Electromagnet
100
An object with a negative charge will A) attract an object with a positive charge B) repel and object with a positive charge C) attract the north pole of a magnet D) attract an object with a negative charge
A) attract an object with a positive charge
100
Which is true about an electromagnet? A) It is a pernament magnet. B) Increasing the number of coils decreases the strength. C) It cannot be turned off. D) It is made by wrapping current-carrying wire around an iron core.
D) It is made by wrapping current-carrying wire around an iron core.
200
A flow of electric charges.
Electric current
200
An electric circuit with only one path for current.
Series circuit
200
An electric circuit with two or more paths for current.
Parallel circuit
200
For an electrical device to operate properly, the circuit must be A) insulated B) series C) parallel D) unbroken
D) unbroken
200
What would you expect to find inside an electromagnet? A) a permanent magnet B) a coil of wire C) two bar magnets D) a device that uses electricity
D) a device that uses electricity
300
A continuous pathway that can carry an electric current.
Electric circuit
300
How much a material opposes the flow of electric current.
Resistance
300
What is a property of matter that causes objects to attract or repel each other? A) compass B) electric charge C) electric circuit D) electric field
B) electric charge
300
What kind of material should you choose if you want to stop the flow of an electrical current? A) enhancer B) inhibitor C) conductor D) insulator
D) insulator
300
Which of these will the south pole of a bar magnet repel? A) a paper clip B) the north pole of another magnet C) the south pole of another magnet D) an iron nail
C) the south pole of another magnet
400
A basic property of the tiny particles that make up matter.
Electric charge
400
A material through which heat and electricity flow easily.
Conductor
400
Which of these materials makes a good INSULATOR of electricity? A) plastics B) salt water C) aluminum foil D) silver
A) plastics
400
Which part of a circuit starts and stops the flow of electric current? A) battery B) lightbulb C) wire D) switch
D) switch
400
Maxine makes a mixture of four solid materials. Which material could a bar magnet separate from the rest of the mixture? A) sand B) sugar C) aluminum scraps D) iron filings
D) iron filings
500
A flaw in a circuit that allows a large current to flow through where it isn't wanted.
Short circuit
500
A material that slows the flow of heat and electricity.
Insulator
500
Of these categories of materials, which would make a good CONDUCTOR? A) plastics B) metals C) rubber tubing D) cotton cloth
B) metals
500
Which of the following is the BEST choice for conducting electricity through a circuit? A) pencil lead B) plastic cord C) copper wire D) wool yarn
C) copper wire
500
What is a temporary magnet made up of a wire wrapped around a core called?
An electromagnet