Find out how sounds are created, how they travel, and how they are heard.Rookie Read-About Physical Science series introduces the youngest readers to physical science concepts. Each book features critical-thinking questions throughout the text; a simple, hands-on experiment; a glossary and more. From the honk of a car horn to the bark of a dog, sounds are everywhere. Even though they are not all the same, science tells us how they all work! In Sound readers will find out how sounds are created, how they travel, and how they are heard.