This profusely illustrated activity book helps students understand systems and cycles, how years change the look of the Earth, and how students can protect resources. The sections (and activities) in this book are: (1) The Earth (Introduction--View, Soil & Dirt); (2) Forces (Plate Tectonics, Earthquakes, Mountain Building, Erosion, Volcanoes, Glaciers, River Power); (3) Measuring (Natural Layers, Ages & Stages, Measuring Time, Ocean Floor, Ground Water); (4) Mapping (Making Maps, Different Maps, Mapping Game, Geo Jobs, U.S. Map); (5) Geology (Fascinating Finds, Expedition Game, Weather: Outside; Pressure: Inside; Weathering; Minerals; Tools & Tests; Rock Hounds Game); (6) From the Ground (Yesterday's Resources, Today's Products, Precious Stuff, Dinosaurs, World of Fossils, Making Fossils); and (7) The World (World Geography, Curious Page, Rocks in Space, City/Country Geology, Recycling and Pollution, See in Metrics). (PR)