What are the two types of charges?
Positive and negative
Resistance is measure in...
Ohms
Voltage is measure in...
Volts
A closed pathway for charges to flow
materials where electrons can move easily within it from place to place
Conductor
If an atom loses or gains an electron (s) it becomes + (lost electrons) or – ( gains electrons). When this occurs we have formed...
Ions
What has more resistance thick or thin wire?
Thin
Current is measured in...
amps
What are 3 materials that can generate electricity
Coal, hydroelectric, natural gas, nuclear power, wind
Plastic, rubber, wood
Opposites....
Like charges....
Attract
Repel
What happens when you add more lightbulbs to a series circuit
The lights dim
What is a parallel circuit
there are at least two ways that electrons can flow around the circuit and get back to the source.
Draw the difference between a series and parallel circuit
A=Insulator
B=Conductor
the farther apart the charges are the ____ they attract and/or repulse one another
Less
What is more dangerous, High currents or high voltage.
High currents
What does a transformer do
Changes electricity from high to low voltage
What does a capacitor do
It stores some charge so the light can work after the battery is unplugged
Why does an electrical wire have plastic or rubber on the outside?
Metal allows for conduction through, but not out of the insulated wire. It keeps the charge flowing in a specific direction.
Do static charges remain on an object forever? Explain
No, they will dissipate to another object (air, table, door handle)
As things are added to a series circuit, what remains the same and what reduces
In series circuits the current remains the same, but the voltage is reduced on each thing that is added to the circuit
Your electricity bill is the measure of _____ _______ usage
kilowatt hours
What is the catalyst in a battery?
Acid
Electrons can move easily in...
conductor