Electricity
Magnetism
Circuits
Electromagnetism
100
Controls the path of electricity.
What is the source of electricity?
100
A cow magnet is used by veterinarians as a medical device. When a cow grazes, it often consumes and swallows barbed wire, staples, naills, and other objects. Which of the following best describes how a cow magnet works? A. The magnet helps the cow graze. B. The magnet pushes iron out of the cow's stomach. C. The magnet repels the things made of iron so that items don't get stuck in teh cow's digestive track. D. The magnet attracts the things made of iron so that items don't get stuck in the cow's digestive tract.
What is D. The magnet attracts the things made of iron so that items don't get stuck in the cow's digestive tract.
100
A circuit with only one pathway for current flow.
What is a series circuit?
100
To make an electromagnet stronger what should you do with the wire?
What is wind the wire more times around the core.
200
In a circuit that tests for insulators and conductors, a light bulb is used to A. carry teh electricity through the circuit. B. show that electricity is running through the circuit. C. reduce the power of the electricity in the circuit. D. turn on the circuit.
What is B. show that electricity is running through the circuit?
200
This is what happens when opposite magnets (North and South) are near each other.
What is attracts?
200
A circuit that splits in two or more pathways before coming together at the battery.
What is a parallel circuit?
200
A nail stuck to a permanent magnet picked up a small washer. The nail could pick up the washer because A. nails have magnetic fields. B. the nail has electromagnetic frequency. C. the nail and washer are made of the same thing. D. magnetism was induced in the nail.
What is D. magnetism was induced in the nail?
300
In a circuit, the switch does this.
What is opens and closes the circuit?
300
This is what happens when two of the same magnets (North and North) are near each other.
What is repels?
300
What three materials do you need to make an electromagnet?
What is a steel rivet, wire, and a D-cell battery.
400
Which of the following will NOT be observed when producing static charges? A. light B. a smell C. feeling a shock D. attracting lightweight materials over a distance without making contact.
What is B. a smell?
400
Which of the following objects is NOT a conductor of heat? A. iron nail B. alumunium soda can C. wooden toothpick D. copper wire
What is C. wooden toothpick?
400
Which of the following materials conducts electricity and sticks to a magnet? A. aluminum foil B. penny C. iron nail D. rubber band
What is C. iron nail?
500
To make a motor run using two batteries, how do you hook up the batteries?
What is positive to negative end?
500
Which of the following is the BEST definition of a insulator? A. An insulator is the component that turns the circuit on and off. B. An insulator is a material that sticks to a magnet. C. An insulator is a material that prevents electricity or heat to flow through it. D. An insulator is a material that keeps the circuit warm.
What is C. An insulator is a material that prevents electricity or heat to flow through it.
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