A picture book that explains the physics of waves.Red Kangaroo, the protagonist of this story and the one whose questions propel the flimsy plot, relaxes on a beach and ponders the surf, then decides to ask Dr. Chris whether "waves ever stop." Dr. Chris, a lab-coated white man with pale skin and rosy cheeks, answers this question and all the others that Red Kangaroo poses about waves. Throughout the story, Dr. Chris teaches Red Kangaroo about wavelength, electromagnetic waves, the visible light spectrum, microwaves, X-rays, and more. Many of the key terms appear in boldface type, and in the extensive backmatter, the glossary offers definitions of all of the terms discussed. There's also a quiz to help readers check their learning as well as several hands-on activities, with illustrations, to get kids experimenting with waves themselves. Much more instructional than entertaining, this book, like Let's Fly a Plane, a simultaneously publishing companion in Ferrie's Everyday Science Academy series, would be suitable additions to science lessons but not likely pleasure reading. Furthermore, the poor-quality illustrations, with repeated depictions of a lecturing Dr. Chris showing barely any variation from spread to spread-or book to book, for that matter-help explain concepts but add nothing aesthetically.Adequate science; inadequate art and plot. (Informational picture book. 8-10 )