The movement of a rushing river is a valuable energy source. Hydroelectric Energy shows how engineers build and operate dams, turbines, and generators to turn this movement into electricity. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.