Ethanol ---------------------------------------------------------------- construction designed to take advantage of solar radiation without active technology

Passive Solar ---------------------------------------------------------------- A device with blades that can be turned by water, wind or steam to power a generator

Turbine ---------------------------------------------------------------- Heat energy from the sun is transferred to water which can be circulated to heat a building or a pool

Solar Water Heating System ---------------------------------------------------------------- Energy generated by the kinetic energy of moving water

Hydroelectricity ---------------------------------------------------------------- A diesel substitute produced by extracting and chemically altering oil from plants

Biodiesel ---------------------------------------------------------------- A property of a building material that allows it to maintain heat or cold

Thermal Mass ---------------------------------------------------------------- Design that decreases the amount of energy needed to do the same amount of work

Efficiency ---------------------------------------------------------------- Heat energy that comes from the natural radioactive decay of elements deep within the earth

The greatest quantity of energy used at any one time Geothermal Energy ---------------------------------------------------------------- The greatest quantity of energy used at any one time

Finding and implementing ways to use less energy Peak Demand ---------------------------------------------------------------- Finding and implementing ways to use less energy

Energy Conservation ---------------------------------------------------------------- Large-scale application of solar; uses lenses, mirrors and tracking systems to focus sunlight

Solar Thermal Power Plants ---------------------------------------------------------------- The accumulation of sediments, primarily silt, on the bottom of a reservoir

Siltation ---------------------------------------------------------------- An efficient, self-regulating electricity distribution network that accepts any source of electricity and distributes it

Energy captured from sunlight with advanced technology Smart Grid ---------------------------------------------------------------- Energy captured from sunlight with advanced technology

Active Solar ---------------------------------------------------------------- Application of an electrical current to split water molecules into hydrogen and oxygen

The storage of water in a reservoir behind a dam Electrolysis ---------------------------------------------------------------- The storage of water in a reservoir behind a dam

A vehicle that can run on gasoline or a gasoline-ethanol mixture Water Impoundment ---------------------------------------------------------------- A vehicle that can run on gasoline or a gasoline-ethanol mixture

Energy generated from the kinetic energy of moving wind Flex-Fuel Vehicle ---------------------------------------------------------------- Energy generated from the kinetic energy of moving wind

Another term used to describe a non-renewable resource Wind Energy ---------------------------------------------------------------- Another term used to describe a non-renewable resource

Carbon found in biomass that was recently in the atmosphere Depletable Resources ---------------------------------------------------------------- Carbon found in biomass that was recently in the atmosphere

Energy source with a finite supply; nuclear and fossil fuels Modern Carbon ---------------------------------------------------------------- Energy source with a finite supply; nuclear and fossil fuels

Wood, charcoal, animal manure and algae Nonrenewable energy ---------------------------------------------------------------- Wood, charcoal, animal manure and algae

Solid biofuel ---------------------------------------------------------------- Hydroelectricity generation in which water is retained behind a low dam or no dam

Run of the River ---------------------------------------------------------------- A system of capturing energy from sun light and converting it directly into electricity

Photovoltaic cells ---------------------------------------------------------------- Chemical reaction resulting in opposing movement of protons and electrons to create an electrical current

An energy source that cannot be used up Hydrogen Fuel Cells ---------------------------------------------------------------- An energy source that cannot be used up

Nondepletable Resource ---------------------------------------------------------------- An activity that does not change carbon dioxide levels in the atmosphere

Carbon captured in fossils- “old carbon” Carbon Neutral ---------------------------------------------------------------- Carbon captured in fossils- “old carbon”

Fossil Carbon Ethanol and biodiesel ---------------------------------------------------------------- Ethanol and biodiesel

Liquid Biofuel ---------------------------------------------------------------- Billing system that charges consumers a higher price for electricity as the usage increases

Tiered Rate System ---------------------------------------------------------------- Nondepletable energy source- relies on the gravitational pull of the moon

Tidal Energy ---------------------------------------------------------------- An energy source that can be regenerated indefinitely as long as it is not overharvested

Potentially Renewable ---------------------------------------------------------------- Energy source made by converting plant material into alcohol