Geology, as you will read in this book, is the science of that Earth on which all of us were born and will die. It is the science of that unique planet of our solar system, which alone survives life in different forms. Physical Geology not only deals with the past, present and future of the Earth, but also with the various physical processes that are occurring on Earth including Volcanoes and Earthquakes. It will also explain the forces that cause the formation of mountains and the shifting of continents.