Although this text is intended to complement a typical first-year course in physical geology, its contents could be applied to numerous other related courses. This book includes numerous embedded exercises and activities that are designed to encourage readers to engage with the concepts presented, and to make meaning of the material under consideration. It is strongly recommended that you try the exercises as you progress through each chapter. You should also find it useful, whether or not assigned by your instructor, to complete the questions at the end of each chapter. - Steven Earle, Gabriola Island, 2015.