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Electrical Energy
Static Electricity, Currents and Circuits
24
Science
4th Grade
03/04/2009

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Cards

Term
electric charges
Definition
The electrical property of particles of matter. An electric charge can be positive or negative.
Term
static electricity
Definition
electric charge that has built up on the surface of an object
Term
electric discharge
Definition
the loss or release of electric charge.
Term
electric current
Definition
a continuous flow of electric charges
Term
electric circuit
Definition
a path along which an electric current can move.
Term
switch
Definition
a device that completes or breaks the path a current can flow in a electric current.
Term
conductors
Definition
a material through which electricity moves easily.
Term
insulators
Definition
a material though which electricity does not flow through easily.
Term
filament
Definition
a long coil of wire that glows when electricity flows through it
Term
series circuit
Definition
an electric circuit in which all the parts are connected in only a single path.
Term
parallel circuit
Definition
an electric circuit that has more than one path upon which the electric current to flow.
Term
fuse
Definition
a device in a circuit that contains a metal strip that melts when the circuit is overheated, thus breaking the circuit.
Term
circuit breaker
Definition
a switch that opens a circuit by turning itself off
Term
How do objects become charged with static electricity?
Definition
when negative charges build up in a object.
Term
What are positive and negative charges?
Definition
charged particles have an overall positive or negative charge.
Term
Louis Latimer
Definition
invented the florescent bulb.
Term
incandescent bulbs
Definition
has a wire coil of tungsten that glows when electricity passes through it, wastes energy.
Term
fluorescent bulb
Definition
electric charges bump into mercury gas to give off white light, does not waste energy.
Term
Thomas Edison
Definition
invented the light bulb.
Term
parts of an electric circuit
Definition
energy source, wire, and devices.
Term
positive and negative charges
Definition
only negative charges can move to other materials
Term
how do electric charges cause lightning?
Definition
a build of positive charges on top of a cloud and negative charges at the bottom of a cloud, which causes objects on the ground to be positively charge. when negative charges jump from the cloud to the ground is lightning.
Term
what are the main points of lightning safety?
Definition
do not going in an open field, under a tree or go swimming, because lightning strikes the tallest objectives.
Term
how are homes wired?
Definition
homes are wired with multiple parallel circuits.
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