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1. Small to medium tracts or parcels or features of the earth’s surface are called landforms.

2. Several related landforms together make up landscapes, (large tracts of earth’s surface).
3. Each landform has its own physical shape, size, materials and is a result of the action of certain geomorphic processes and agent(s). Actions of most of the geomorphic processes and agents are slow, and hence the results take a long time to take shape. Every landform has a beginning.
4. Landforms once formed may change in their shape, size and nature slowly or fast due to continued action of geomorphic processes and agents.
5. A landmass passes through stages of development somewhat comparable to the stages of life —youth, mature and old age.
6. Geomorphology deals with the reconstruction of the history of the surface of the earth through a study of its forms, the materials of which it is made up of and the processes that shape it.
7. Running water, ground-water, glaciers, wind and waves are powerful erosional and depositional agents shaping and changing the surface of the earth aided by weathering and mass wasting processes.