Interior of The Earth. Sources of information of about the earth interior, direct sources, Indirect sources , earth quake, Earth quake waves, Propagation of earthquake waves, emergence of shadow zone, types of earthquakes, effects of earthquakes, structure of the earth, the crust, The mantle, the core, volcanoes and volcanic landforms, types of volcanoes, shield volcano, composite volcanoes, caldera, flood basalt provinces, mid ocean ridge volcanoes, volcanic landforms intrusive forms, plutonic rocks, batholiths, laccoliths, lapolith, phacolith ,sills & dykes.
