The study of how the surface of the Earth is shaped by natural
processes:
These processes give rise to various types of structures on the Earth's
surface, called
landforms (follow the link).
Geomorphology is the interface between Geography and Geology.
Where geologists are interested in the rocks underlying various landforms, the minerals those rocks contiain,
and how geomorphological proceses contribute to the formation of new rocks,
geographers are interested in landforms' spatial relationships to one another,
and how they affect climate, soils, vegetation, the natural environment,
and ultimately human settlement, economics, culture, politics,
and history.