TY - BOOK AU - Graf,Mike TI - How does a waterfall become electricity? T2 - How does it happen? SN - 9781410934482 (lib. bdg.) AV - TC147 .G665 2009 U1 - 621.31/2134 23 PY - 2009/// CY - Chicago PB - Raintree KW - Water-power KW - Juvenile literature KW - Electricity KW - Hydrodynamics KW - Water power KW - sears KW - Renewable energy sources KW - Dams KW - Hydroelectric power plants N1 - Includes bibliographical references (p. 31) and index; What makes a waterfall? -- The power of falling water -- Early uses of water power -- The waterwheel -- Building a dam -- It's electric! -- Electricity in our homes -- Who uses water power? -- Famous hydroelectrical plants -- The Hoover dam -- Other types of energy -- The benefits of water power -- Water-power problems; Wilson's Children, October 2010; Library Media Connection, March 2010; Wilson's Children; Library Media Connection; 5.2; Follett Library Resources; 3-6; Follett Library Resources N2 - Explores how dams help generate water power, early uses of water power, the benefits of water power, and other types of energy ER -