This textbook is a written to support a course named "Geophysics 01" for the Geo-Measuring Engineering career, which is currently dictated by Jorge Reyes Molina in the Department of Geotechnical Engineering at University of Santiago (www.usach.cl). It is important to mention that Geophysics is a highly advanced science in Chile, due to the fact that Chile is the most seismic country of the world (e.g.: Earthquake 9.5 Mw of Valdivia, which occurred on May 22, 1960) and also because of the fact that Chile is the world's largest producer of copper (34% of world total). In this textbook the...