From down to earth to high in the sky, we like to be moving! But what makes cars move and planes fly? In this book, young readers will learn about the forces that help vehicles move, and how engineers design them to travel on land, in the air, and more! The Mi Biblioteca de Ingenieria/My Engineering Library series gives an introduction to a variety of engineering and design topics for beginning readers based on NGSS. From learning about how engineers design rockets to how they build structures underwater, these informative books present complicated information in easy-to-understand language with kid-friendly examples and diagrams. Each book includes a glossary, index, and an engineering design activity to support further comprehension.