The set of natural sciences which focuses on the planet Earth are known as earth science. It primarily deals with studying the physical characteristics of Earth. There are four major areas of study within this field. These include the atmosphere, the hydrosphere, the lithosphere and the biosphere. Each of these is further sub-divided into more specialized fields. Earth science makes use of tools from a variety disciplines such as chronology, geography, chemistry, biology, physics and mathematics. These are used to construct a quantitative understanding of the working and evolution of the Earth. This discipline is also involved in the study of different geological phenomena related to the Earth's crust, mantle and core. This book provides significant information of this discipline to help develop a good understanding of earth science. Those with an interest in this field would find this book helpful. It is appropriate for students seeking detailed information in this area as well as for experts.