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Physical geography (or physiogeography) focuses on geography as an Earth science. It aims to understand the physical lithosphere, hydrosphere, atmosphere, pedosphere, and global flora and fauna patterns (biosphere). Physical geography can be divided into the following broad categories:
-Biogeography
-Climatology & paleoclimatology
-Coastal geography
-Environment geography & management
-Geodesy
-Geomorphology
-Glaciology
-Hydrology & Hydrography
-Landscape ecology
-Oceanography
-Pedology
-Palaeogeography
-Quaternary science

Human geography is a branch of geography that focuses on the study of patterns and processes that shape human interaction with various environments. It encompasses human, political, cultural, social, and economic aspects. While the major focus of human geography is not the physical landscape of the Earth (see physical geography), it is hardly possible to discuss human geography without referring to the physical landscape on which human activities are being played out, and environmental geography is emerging as a link between the two. Human geography can be divided into many broad categories, such as:

-Cultural geography
-Development geography
-Economic geography
-Health geography
-Historical & Time geography
-Political geography & Geopolitics
-Pop. geog. or Demography
-Religion geography
-Social geography
-Transportation geography
-Tourism geography
-Urban geography

Source:http://en.wikipedia.org/wiki/Geography
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