SparkCharts :The information you need-concisely, conveniently, and accurately. Created by Harvard students for students everywhere, these study companions and reference tools cover a wide range of college and graduate school subjects, from Business and Computer Programming to Medicine, Law, and Languages. Theyll give you what it takes to find success in school and beyond. Outlines and summaries cover key points, while diagrams and tables make difficult concepts easier to grasp.This six-page chart covers: Geologic time The Earths spheres Plate tectonics Earthquakes and the Earths interior Minerals Rocks and their environments The rock cycle Volcanoes Oceans and shorelines Deserts and wind Glaciers and glaciation Other erosive forces The water cycle Streams Groundwater Climate change