Environmental and energy glossary
Similar to global climate change, but refers
more specifically to temperature, whereas
global climate change encompasses the broader
changes associated with elevated greenhouse
gas levels, such as dryer deserts, increased
numbers of hurricanes and warmer oceans.
Graywater or greywater: Waste water from a household source other than a toilet. This water can be used for landscape irrigation, depending upon the source.
A building constructed or renovated to incorporate
design techniques, technologies and materials
that minimize its overall environmental impacts.
Greenhouse effect: The heating effect due to the trapping of radiation from greenhouse gases produced from natural and human sources.
While gases like carbon dioxide, methane,
nitrous oxide, ozone and water vapor naturally
occur in the earthís atmosphere, human activities
-- most notably the burning of fossil fuels
to produce heat and electricity -- can artificially
increase concentrations. They're called greenhouse
gases because they remain in the atmosphere
and intensify the sunís heat, just like the
glass walls of a greenhouse. Greenhouse gases
are the primary source of global climate change.
Green power: A popular term for energy produced from clean, renewable energy resources.
Greenwash: Misinformation disseminated by a company or organization so as to present an environmentally responsible public image.
Hybrid system: A renewable energy system that includes two different types of technologies that produce the same type of energy.
Hydroelectric power: Electricity produced by the force of water falling through a hydroturbine that spins a generator.
Lighting that uses an electrically-heated
filament to produce light in a vacuum or inert
Insulation: Materials that prevent or slow down the movement of heat.
Insulation blanket: A pre-cut layer of insulation applied around a water heater storage tank to reduce heat loss from the tank.
Kilowatt (kW): A standard unit of electrical power equal to one thousand watts.
(kwh): A unit or measure of electricity
supply or consumption of 1,000 watts over
the period of 1 hour.
One thousand kilowatts or 1 million watts.
Megawatt-hour: One thousand kilowatt-hours or 1 million watt-hours.