A
Isolated electrical charges that do not move through a circuit.
Static Electricity
negatively charged particle in an atom. Shown with a minus sign (-)
Electron
magnetism created by an electrical current as with an electromagnet
Electromagnetism
an experiment that has only one variable
controlled experiment
a material that allows electricity to flow through it, such as copper
Conductor
Pull toward
Attract
a natural magnet made of the mineral magnetite; has north and south poles
lodestone
a switch that automatically stops the flow of too much electricity to protect electric circuits against overheating and damage
circuit breaker
a tool used to detect or measure electricity in a magnetic field
galvanometer
small parts that make up atoms
particles
push away from
Repel
the smallest part of a material that can exist either alone or combined with something else.
atom
a safety device for stopping an electrical current if the electrical circuit becomes overloaded
fuse
a device in which to collect and store electricity
Capacitor
a material that does not conduct electricity, such as rubber, plastic, or wood
insulator
to let go of electrical energy
discharge
a metal rod changed into a magnet by being surrounded by a wire carrying an electric current
electromagnet
any of a certain group of solids that conducts electricity more than an insulator but less than a conductor
semiconductor
a part of an experiment. It should be the ONLY thing that changes in tests of a hypothesis
variable
a practical unit of measurement of the quantity of electric charge
Coulombs
positively charged particle in an atom. shown with a plus sign (+)
proton
the space in which electricity and magnetism operates
force field
unlike charges attract each other, and like charges repel each other; named after the man who first discovered and described this behavior in 1785.
Coulomb's law
machine that produces electricity, also called a generator
Dynamo
an electrical unit of measurement
volt
The first machine that could save sounds and replay them.
phonograph
an object does not have an equal number of protons and electrons
Unbalanced Charge
The movement or flow of electric charges
Current
A legal document giving an inventor the right to be the only person to make, use, or sell the invention for a set period of time.
Patent
An electronic device that restricts current flow chiefly in one direction.
diode
and
semiconductor diode
An electrical current circuit in which the energy source is connected by wires to more than one component along many paths, so that if one component fails to work, the circuit will still conduct electrical current.
Parallel Circuit
applying knowledge in practical ways
Technology
An electrical current circuit in which the energy source is connected by wires to more than one component. The same current passes through each component without being diverted, so that if one component fails to work the circuit will not continue to conduct electrical current
Series Circuit