The guiding question for this activity is,”How do waves carry energy? Students use recycled water bottles filled with colored water and a type of oil to demonstrate a wave. They will also learn about energy, mechanical waves, and medium. An explanation of the science behind the activity is provided Before beginning this activity, we recommend you read Chapters 9 and 10 which are in this book selection. Chapter 9 is an overview of the section and introduces the format used to present ideas for Family Science Night activities. Chapter 10 explains that these activities are what they call novice level. A materials list, references, safety notes, standards, and teacher background information are provided. This book selection also includes the Table of Contents, Preface, Acknowledgments, About the Authors, Introduction, and Index.