Why does a siren's sound change as it passes you? How does sound become music? Can sound damage our ears? This title looks at what sound is, how sound is made, how sound waves travel, and how humans and other animals hear sound. Find out why sound travels faster through water than through air, how it is possible to 'see' using sound, and how sound is recorded.

 

This book is part of a book series called Physical Science in Depth .

This book is aimed at children in secondary school.

There are 64 pages in this book. This book was published 2008 by Capstone Global Library Ltd .

Dr Carol Ballard worked for many years as a school science co-ordinator. She is now a full-time writer of information books for children and teenagers. The author, Sally Morgan, is an experienced nature photographer and writer of books for children.