Geography, Origin of the earth, Interior of the earth, Origine of continents and ocean basins, Materials of the earth crust, Continental drift theory, Tidal and dust cloud hypothesis, Earth movement, Mountain building or orogeny, Process of gardation, Glaciers, Winds, Underground water, Wave action, Cycle of erosion, Soils, Climatology, Atmosphere, Insolation and temperature, Atmospheric process, Classification of climates, Ocean deposits. (Topical Term)