Sound. Light. Heat. Even earthquakes! They all travel in waves. Waves are a transfer of energy and understanding them allows us to better understand the world around us. Discover the two ways in which waves move, and learn about the characteristics of waves; wavelength, amplitude and frequency. Students learn about the common characteristics of waves through real-life examples and clearly illustrated graphics. A fun, hands-on activity will help students understand these basic concepts. One of the 11 volumes in the Physical Science for Children series in the Schlessinger Science Library. Part of the Schlessinger Science Library for Children Collection. This title correlates to the National Science Education Standards for Physical Science--properties of objects and materials, position and motion of objects, and light, heat, electricity and magnetism. This program includes a teacher's guide. (MM)