The scale of things means how one thing compares in size to another. This series helps give an understanding of scale by comparing objects that are teeny-tiny or truly gigantic to other objects that are more familiar. If someone told you how tall Niagara Falls is, could you picture it? Would it help if it was described as being as tall as 13 double-decker buses stacked on top of each other? This book explains scale in an easy way by going around the world to compare well-known landforms by their height or length. Book jacket.