The Solar system and evolution of the Earth; Structure and composition of the earth Geodynamics. Theory and fundamental concepts of Plate Tectonics: Rotation vectors, rotation poles, present day plate motions and triple junctions. Geophysical framework of the earth: Spherical harmonic representation of potential functions. Gravity: figure of the earth, shape, rotation, tidal friction, gravity field of earth and Isostasy. Geomagnetism: internal, external field & their causes, geodynamo theory. Paleomagnetism: Polar wander paths, Seafloor spreading and Continental drift. Heat flow: heat transfer mechanism, thermal regime, thermal structure of the earth, volcanism, Hot spots and mantle plumes. Elastic waves: internal structure and variation physical properties in the interior of the earth.