Introduces the various aspects of sound, what it is, how it is made, and how it is detected by the ear.

Examines how living things survive in different environments, cope with changes taking place around them, and depend on each other for survival.

Learn why projectiles follow the paths they do and what factors influence those paths. Readers who are fascinated with potato cannons, slingshots, and rocketry will love taking that next step and applying what they learn about the laws of physics to the science of figuring out where to aim.