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Key Terms
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Essay
100
What is a negatively charged particle called?
electron
100
___________is the unit of voltage.
Volt
100
Power = voltage x resistance.
false, power = voltage x current
100
What do electrons attract?
protons
100
What does an electrochemical cell convert?
It converts chemical energy into electrical energy.
200
What is a postively charged particle called?
proton
200
___________ is the measure of the energy each electron carries.
Voltage
200
Ohm is the unit of power.
false, ohm is the unit of resistance, the unit of power is watt
200
Give me an example of a good insulator.
rubber
200
How often does a current in the home change direction and what is the type of current called?
60 times per second and it is called an alternating current.
300
What is an uncharged subatomic particle?
neutron
300
____________ is the rate at which work is done.
Power
300
In a parallel circuit, there is only one path for electron to take.
false, more than one path
300
The purpose of a genertor is to convert _________ energy to _________energy.
mechanical energy to electrical energy
300
What is the different between a series and a parallel circuit?
:)
400
What is an atom?
The smallest part of an element that has all the properties of that element.
400
_____________is the opposition to the flow of electricity.
Resistance
400
Fuses are used to break the flow of electricity.
True
400
The north pole of one magnet will do what to the south pole of another magnet?
attract it
400
How is an alternating electric current produced in a wire?
A conducting wire cuts across magnetic lines of force, electrons flow through a wire, and current is produced. Because the lines of force are cut first in one direction and then in the opposite direction the electrons start to flow one way and then reverse directions and flow the other way causing a alternating electric current
500
What is an amp?
The unit used to measure current.
500
__________ is the rate of flow of electrons.
Current
500
Static electricity results from the buildup of electric charges on objects.
true
500
The purpose of an electric motor is to convert __________ energy to ____________energy.
electrical energy to mechanical energy
500
Explain how the light switch in our classroom works.
:)