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4.3 Science Review
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Which variable is the data that you are testing?
Dependent
Which variable changes in the experiment?
Independent
Who invented the electric motor?
Michael Faraday
Who invented the lightening rod and experimented with lightning?
Benjamin Franklin
Who invented the lightbulb?
Thomas Edison
Where is the magnetic field the greatest?
At the poles
What is the difference between an electromagnet and a permanent magnet?
An electromagnet has to be turned on and off, but a permanent magnet is always magnetic.
A penny is an example of what?
A conductor
A circuit that connects several objects one after the other so that the electrical current flows in a single path.
Series Circuit
A circuit that connects several objects in a way that the current for each object has it own path, is which circuit?
Parallel Circuit
A circuit contained a break that does not allow the flow of electricity, is which circuit?
Open Circuit
The complete path electricity moves in within a circuit with no breaks in the flow, is which circuit?
Closed Circuit
What makes an electromagnet strong?
The more wire wrapped around the nail, the stronger the electromagnet
A nail with a wire coiled around it connected to a battery is called a what?
electromagnet
Give an example of light energy.
A lamp or light
Give an example of heat energy.
toaster
Give an example of mechanical energy.
fan
Name the three forms of energy that electrical energy can be transformed into.
heat, light, and mechanical or motion energy
What phenomenon that occurs in nature is caused by static electricity?
lightening
What does static electricity cause?
hair sticking up, getting shocked when touched
What could be used to close a circuit with a gap?
A conductor or anything with metal in it
What is an example of a conductor?
Anything that has metal.
What is an example of a good insulator?
plastic, rubber
A material that does not allow electrical currents to flow through it easily.
Insulator.
A material that allows electrical current to flow through it easily.
Conductor
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