Download Electricity Review 3: series circuit: a circuit that has only one path for

Electricity Review 3:
series circuit: a circuit that has only one path for current to travel.
parallel circuit: a circuit that is a closed pathway that has several different paths for current to
travel.
junction point: the location at which a circuit divides into multiple paths or where multiple
paths combine.
Charging by conduction: electrons transfer from one object to another. Charging by
induction: the electrons are rearranged in the object, but no electrons actually transfer from one
object to another. Both are methods of charging objects.
circuit breaker: a switch and safety device that can cut off all power coming into your home to
prevent the wires from overheating.
efficiency: the percentage of energy converted into a useful form compared to the total amount
of energy consumed.
electrical energy: potential energy transformed into a useful form.
electrical power: the rate at which electric potential energy is being transformed.
joule: a small unit for measuring energy; symbol is J.
watt: a measure equal to one joule (J) of energy transformed in one second (s); symbol is W.
power: the rate of change in energy or the rate at which work is done or energy is transformed
power rating: a measurement of how much electrical energy an electrical device consumes for
every second it is in use.
kilowatt-hour: a large unit for measuring energy; symbol is KW•h
EnerGuide: a label that tells you how much energy an appliance uses in a typical year of use.
fuse: a device that contains a metallic conductor that melts when excessive current heats it up.
generator: a device that converts mechanical energy into electrical energy.
grounding terminal: the round prong in a plug that allows excess current to flow through the
metal frame of a building and into the ground instead of producing a shock.
hydroelectric: uses the energy of falling or flowing water to spin a turbine.
non-renewable: something that cannot be replaced.
renewable: something that can be replaced
nuclear energy: uses the heat released from a nuclear reaction to boil water. The resulting steam
is used to spin a turbine.
thermal energy: uses the heat produced from the burning of fossil fuels, including coal, gas, and
diesel, to boil water. The resulting steam is used to spin a turbine.
transformer: a simple electrical device that changes voltage.
turbine: a cylinder outfitted with paddles or blades that rotates to supply energy to a generator.