Moles, beavers, rabbits . . . these animals burrow tunnels in the ground every day! What other kind of creature makes tunnels? Humans!

In Tunnels! With 25 Science Projects for Kids, kids ages 7 to 10 explore the fascinating world of passageways beneath the ground, dug deep within the earth through soil and rock. But why dig through rock to make a tunnel? Tunnels give people a way to travel and transport goods from one place to another. Readers learn about the engineering and construction that goes into every tunnel made, whether it’s being dug under roads, under oceans, or under cities. Links to primary sources for kids offer a unique, interactive learning experience, while fun facts, engaging illustrations, timeline, glossary, and lots of resources keep kids wanting to learn more about the engineering design process.

Tunnels! is part of a set of four Explore Engineering books, in which readers ages 7 to 10 develop foundational understanding of the physics that guides the building and maintenance of bridges, canals, dams, tunnels, and skyscrapers. Other titles in the Explore Engineering set include Bridges!, Canals and Dams!, and Skyscrapers!

Try these hands-on STEM activities!



Create a tunnel maze

Design a series of tunnels on graph paper

Experiment with Newton’s laws of motion