This manual is a comprehensive, versatile, and adaptable collection of introductory level laboratory experiences that examine the basic principles and concepts of the Earth sciences. Going beyond the traditional laboratory offerings, the manual contains twenty-two step-by-step exercises that reinforce the major topics of geology, oceanography, meteorology, and astronomy. Widely praised in its previous editions for its clear, concise, and comprehensive coverage, as well as its flexible organization, this new edition reflects recent changes in the discipline, features an online companion Website, and incorporates revisions of the art program by Dennis Tasa, one of the foremost geologic artists in the country.