In this program, you will learn all about sound.  What is sound?  Hoes does sound move?  What are the characteristics of sound waves?  How do we perceive sound?  What is echolocation?  The answers to all of this are covered in depth with detailed graphics, diagrams and exciting video.  On-screen, multiple-choice reviews at the end of each segment reinforce important concepts and make learning fun.  Written by an educator and curriculum writer.