This document is one of ten curriculum guides developed by the Nevada Competency-Based Adult High School Diploma (CBAHSD) Project. This curriculum guide on earth and physical science is divided into twelve topics. The topics included are Geology, Meteorology, Astronomy, Natural Disasters, Chemical Reaction, Laboratory, States of Matter, Force and Energy, Electricity, Radioactivity, Metals, and Household Chemicals. Competency statements and performance indicators are provided for each topic area. The performance indicators are designed to be used as pre- and post-tests. Answer keys are also provided. This set of curriculum guides is accompanied by both a teacher's guide and a student handbook. (BM)