Sections 1 & 2
Sections 3 & 4
Sections 5 & 6
Sections 7 & 8
Electricity Safety
100
What is a proton?
Particle with a positive electric charge
100
What is the best conductor?
copper
100
What is a parallel circuit?
electric current can follow more than one path
100
How is voltage measured and what is the unit?
voltmeter, volt
100
What is a fuse?
thin piece of metal that will melt or break a circuit if there is too much current
200
What is a series of electrochemical cells that are connected together?
battery
200
What is an insulator?
Material through which electrical charge does not flow easily
200
In a parallel circuit with 2 lights and one light goes out, will the other light stay on?
Yes, because the current can follow more than one path
200
What is the formula for resistance? Hint - think Ohm's law
I = V/R
200
what happens if you overload a circuit?
too much current flows through a wire, wire can overheat. It can then melt and short circuit a wire
300
What are 3 parts of an atom?
protons, neutrons, electrons
300
What type of current do homes and businesses use?
alternating current
300
Draw a series circuit
pg. 440
300
What are 4 things that affect resistance?
length, diameter, material, temperature
300
What is a circuit breaker?
switch that opens a circuit if too much current is flowing.
400
Where are dry cell batteries used?
flashlights, CD players, Cameras....
400
Give 2 examples of insulators
cork, wood, cloth, plastic, air
400
What are the 3 parts of an electric circuit?
Source, load, wires
400
What is resistance?
opposition to the flow of electric current
400
True or false It is alright to use a wire that is frayed?
False
500
What is Static electricity?
Buildup of electric charges in an object
500
Why can static electricity not be used to run electrical appliances?
does not flow, appliances need a flow of electricity
500
What is the difference between a closed circuit and an open circuit?
Open- charges won't flow Closed- charges can flow
500
If a wire is thin, does it have more or less resistance?
more
500
Name 3 electrical safety rules
do not plug in too many appliances, do not allow cords to be worn, do not run cords under carpet, etc...
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