9781422271445

WORDS TO UNDERSTAND

association: an organization that represents the professional interests of certain types of workers or employers in a particular industry; associations offer membership, continuing education classes, publications, and other resources conduit: a tube used to protect and direct electrical wiring in a building or structure; conduits may be made of metal, fiber, plastic, or fired clay contractor: a person or company that is hired for a certain period of time to provide services, goods, equipment, materials, or staff in order to meet an established goal energy: thermal (heat), light (radiant), kinetic (motion), electrical, chemical, nuclear, or gravitational force that is harnessed to perform the functions of life; there are two types of energy: stored (potential) energy and working (kinetic) energy photovoltaic cell: technology that absorbs photons of light and releases electrons, which are captured and used to create electricity; also known as a solar cell

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