attract
to pull toward each other
battery
a source of stored chemical energy
circuit
a pathway for the flow of electricity
closed circuit
a complete circuit through which electricity flows
compass
an instrument that uses a free-rotating magnetic needle to show direction
complete circuit
a circuit with all the necessary connections for electricity to flow
component
one item in a circuit
conductor
a material capable of transmitting energy, particularly in the forms of heat and electricity
energy transfer
the movement of energy from one location to another
filament
the material in a lightbulb (usually a thin wire) that makes light when heated by an electric current
force
A push or a pull
gravitational field
an invisible area of gravitational influence around a mass
gravitational force
an attractive force between objects, like between Earth and objects on Earth
gravity
the natural attraction between masses. On Earth, all objects are pulled toward the center of Earth.
incandescent lightbulb
a device that gives off light and heat when electric current runs through a filament
incomplete circuit (open circuit)
a circuit that has a break in it
induced magnetism
the influence of a magnetic field on a piece of iron, which makes the iron a temporary magnet
insulator
a material that prevents the flow of electricity, commonly plastic, rubber, glass, or air
kinetic energy
energy of movement
lamp
a device that produces light, either by electricity or burning oil, gas, or wax
magnet
an object that responds to magnetic force
magnetic field
An area of magnetic influence around a magnet
magnetism
a property of certain kinds of materials that causes them to attract iron or steel
open circuit
an incomplete circuit through which electricity will not flow
permanent magnet
an object that sticks to iron
pole
the end of a magnet
potential energy
energy that matter has because of its position
repel
to push away from each other
temporary magnet
a piece of iron that behaves like a magnet only when it is under the influence of an external magnetic field