"A comprehensive introduction to plate tectonics, written in a beautifully balanced style. Neither too complicated, nor too simple, Sattler formulates information in a way that is lucid without being dull. The topics covered include the appearance of the inside of the earth, the formation and movements of tectonic plates, of continents and mountain, and the various ways of dealing with earthquakes.....A model of writing about science for children."--Kirkus...