... have, you probably saw ships and boats in action Ships and boats come in all shapes and sizes There are small canoes, medium-sized tugboats, and huge oil tankers All boats, no matter what size, ... ships and boats? How does a ballast work? People use different kinds of energy to move ships and boats through water Write to tell about three types of fuel or energy used to move ships and boats ... include motion, wind, sound, and electricity In this book, you will read about boats and ships What boats and ships have to with energy? People use different kinds of boats People also use different...