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. This series is aligned to the Next Generation Science Standards. 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!