Description

Energy Use Investigation

Glossary of Terms

Here you will find a list of terms and phrases explained in an easy to understand manner.

A - B | C - D | E - End | Energy - Externality
F - G | H - K | L - M | N | P | R - S | T - W

Heat
The transfer of energy from one object at a higher temperature to another object at a lower temperature. Heat can be transferred by conduction, convection, or radiation. Although technically incorrect, the word heat is often used to mean "thermal energy.

Horsepower (abbrev. hp)
A unit of power. One horsepower equals 550 foot-ponds per second or 746 watts. See Power.

Hydrocarbon
An organic compound containing only carbon and hydrogen. Large, heavy hydrocarbons may have up to 90 carbon atoms per molecule while small, light hydrocarbons may have only one to four carbon atoms per molecule. Different types and sizes of hydrocarbon molecules make up crude oil and natural gas.

Hydroelectric power
Electricity produced by the conversion of kinetic energy from falling water using a generator. See Hydropower.

Hydropower
Electricity or mechanical energy produced by the conversion of energy from falling water. Sometimes used to refer only to the production of electricity from falling water. See Hydroelectric power.

Incandescent lamp
A lamp that contains a wire filament that produces light when heated by an electric current. See Compact fluorescent lamp.

Incandescent light bulb
See Incandescent lamp.

Inefficient
1. Producing only a small useful output from a large total input. 2. Wasteful of time, energy or materials; not efficient; ineffective. See Efficiency, Efficient.

Insulation
Material that opposes the passage or transmission of heat or electricity.

Kilowatt (abbrev. kW; pl. Kilowatts)
A unit of power equal to 1,000 watts. See Watt.

Kilowatt-hour (abbrev. kWh; pl. Kilowatt-hours)
1. A unit of energy equal to 3,413 Btu or 3,600,000 joules. 2. An amount of energy that results from the steady production and consumption of one kilowatt of power for a period of one hour.
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