Any source of energy other than fossil fuels that is used for constructive purposes.
Ampere
The unit of electric current in the meter-kilogram-second system of units. Referred to as amp and symbolized as A.
Biomass
Plant materials and animal waste used especially as a source of fuel.
Current
The net transfer of electric charge (electron movement along a path) per unit of time.
Electrical Energy
Energy caused by the movement of electrons.
Electricity
The flow of electrical power or charge
Electromagnetic Induction
The production of electricity in conductors with the use of magnets.
Efficiency
The ratio of useful energy output to the total energy input, or the percentage of the work input that is converted to work output
Energy
A fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work.
Energy Conversion
Changing one form of energy to another
Environmental protection agency
An organization that works to develop and enforce regulations that implement environmental laws enacted by Congress.
Fossil Fuel
A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
Generator
A dynamo or similar machine for converting mechanical energy into electricity.
Geothermal Energy
The use of heat from within the Earth or from the atmosphere near oceans.
Gravitational Energy
The state when objects are not yet in motion.
Induction
The production of an electric or magnetic state by the proximity (without contact) of an electrified or magnetized body.
Inexhaustible Energy
An energy source that will never run out.
Kinetic Energy
Energy which a body possesses by virtue of being in motion.
Nonrenewable Energy
A resource that cannot be replaced once used.
Ohm
The unit of electric resistance in the meter-kilogram-second system of units. Symbolized as Ω.
Ohm's Law
States that the direct current flowing in an electric circuit is directly proportional to the voltage applied to the circuit.
Parallel Circuit
A closed electrical circuit in which the current is divided into two or more paths and then returns via a common path to complete the circuit.
Potential Energy
The energy that a piece of matter has because of its position or nature or because of the arrangement of parts.
Power
The rate at which work is performed or energy is expended.
Power Converter
Changes one form of power to another.
Power Grid
A system that links electricity produced in power stations to deliver it to where it is needed.
Renewable Energy
A resource that can be replaced when needed.
Resistance
The opposition that a device or material offers to the flow of direct current.
Rotor
The rotating member of an electrical machine.
Series Circuit
A circuit in which all parts are connected end to end to provide a single path of current.
Turbine
A machine for producing power in which a wheel or rotor is made to revolve by a fast-moving flow of water, steam, gas, or air.
Volt
The unit of potential difference symbolized as V.
Voltage
The potential difference measured in volts. The amount of work to be done to move a charge from one point to another along an electric circuit.
Work
A result of a force moving an object a certain distance.