Key Terms 10/6/10

Any source of energy other than fossil fuels that is used for constructive purposes.

The unit of electric current in the meter-kilogram-second system of units. Referred to as amp and symbolized as A.

Plant materials and animal waste used especially as a source of fuel.

The net transfer of electric charge (electron movement along a path) per unit of time.

Energy caused by the movement of electrons.

The flow of electrical power or charge

The production of electricity in conductors with the use of magnets.

The ratio of useful energy output to the total energy input, or the percentage of the work input that is converted to work output

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.

Changing one form of energy to another

An organization that works to develop and enforce regulations that implement environmental laws enacted by Congress.

A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

A dynamo or similar machine for converting mechanical energy into electricity.

The use of heat from within the Earth or from the atmosphere near oceans.

The state when objects are not yet in motion.

The production of an electric or magnetic state by the proximity (without contact) of an electrified or magnetized body.

An energy source that will never run out.

Energy which a body possesses by virtue of being in motion.

A resource that cannot be replaced once used.

The unit of electric resistance in the meter-kilogram-second system of units. Symbolized as Ω.

States that the direct current flowing in an electric circuit is directly proportional to the voltage applied to the 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.

The energy that a piece of matter has because of its position or nature or because of the arrangement of parts.

The rate at which work is performed or energy is expended.

Changes one form of power to another.

A system that links electricity produced in power stations to deliver it to where it is needed.

A resource that can be replaced when needed.

The opposition that a device or material offers to the flow of direct current.

The rotating member of an electrical machine.

A circuit in which all parts are connected end to end to provide a single path of current.

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.

The unit of potential difference symbolized as V.

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.

A result of a force moving an object a certain distance.