9781422271506

WORDS TO UNDERSTAND

aerodynamic: a type of design that reduces or minimizes the amount of drag caused by air when an object travels through it fossil fuels: combustible material that is formed from the remains of decomposing plants and animals; this material (including coal, petroleum, and natural gas) is extracted and burned for energy purposes infrastructure: a system of structures, facilities, and resources that is necessary for the operation of a society or business kilowatts: a measurement of electrical power, equal to 1,000 watts of electric power nuclear power: electricity that is generated through the use of nuclear fission or fusion; also known as nuclear energy

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