Learning to think in graphs can be fun In this book, readers learn about the environment in an entirely new way, through graphs This book contains 28 graphs relevant to environmental science, including the following topics: Sun, Air, Water, & Earth; Outdoors & Indoors Environment; Environmental Magnetic Fields; Energy Efficiency & Alternative Energy. Graphs contain a selection of physics data, including light intensity, magnetic field strength, water flow, air flow, current, voltage, and power.