Static Electricity
Magnetism
Circuits
Electromagnets
Current Electricity
100
Opposite charges do this
attract
100
Opposite poles of a magnet do this...
Attract
100
What type of circuit do you normally find in houses and other buildings?
Parallel Circuits
100
Electromagnets use a combination of what two things?
electricity and magnetism
100
What is a continuous flow of electric charges?
electric current
200
What is a material that has more positive than negative charges?
Positively
200
What is a magnet?
An object that attracts certain metals.
200
In this type of circuit, if you unscrew one bulb, the other bulbs will go out also.
Series Circuit
200
How is an electromagnet more useful than a bar magnet?
You can turn it on and off.
200
What is a conductor? Name 3.
A material that allows electricity to flow through. copper, gold, silver, almuminum,
300
What is an object that has more negative charges than positive?
Negatively Charged
300
Where is the force of a magnet the strongest?
Magnetic Poles
300
What do you need to create a circuit?
Conductor, Power source, load, sometimes a switch
300
What materials can you make an electromagnet with?
wire, nail, and battery
300
What is an insulator? Name some.
A material that do not allow electric charges to flow through easily. Rubber, wood, glass, air, plastic
400
What is matter that has the same number of positive and negative charges?
Electrically Neutral
400
How do you create a temporary magnet?
Stroke the item with a permanent magnet several times. It will become a magnet for a short time.
400
In this type of circuit, if one bulb goes out, the rest of them will continue to work.
Parallel Circuit
400
In an electromagnet, how can you make the current stronger?
Wrap more coil around the nail or add another power source.
400
What are tiny units of electriciyt called?
Electric charges
500
Like charges do this
Repel
500
Like Poles of a magnet do this
Repel
500
A device that changes chemical energy into electrical energy is called...
Electric cell
500
Where might an electromagnet be most useful?
Junkyard - picking up scrap metal
500
Why is current electricity more useful than static electricity?
Static electricity cannot be controlled. It is released all at once whereas current electricity can be controlled as a continuous flow.
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