Familiarize readers to the wonders of the world's lakes and rivers with this introductory text. Using easy to understand language and key science vocabulary, the text illuminates the differences between lakes and rivers, how lakes and rivers form, and why they are important to people. Young scientists are launched into an exploration of the longest rivers, deepest lake, and highest waterfall. They find out the significance of rivers to ancient cultures and learn their uses in contemporary society. photographs, fast facts, and a hands-on activity further engage readers in learning about the vast world of water.