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15 Cards in this Set

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  • Back
In what five ways does modern geomorphology differ from earlier geomorphology?
A. Emphasis on process (less on description)
B. Attention to both erosional and depositional (newer) landforms
C. Increased attention to structural dynamics
D. Quantification
E. Remote sensing (low altitude aerial photography,etc.)
What is geomorphology?
the study of landforms with special attention to their origins, material composition, processes of development and alteration
What size of landform complexes do geomorphologists most often study?
small landform complexes
geomorphology is primarily a _____ discipline
What is the principle of uniformitarianism and who came up with it?
the natural physical and chemical processes which can be observed today have operated in the past and will continue to do so in the future ("the present is the key to the past")

James Hutton, the father of geology, established idea, but Lyell played a part in the acceptance of it.
What is Playfair's law?
streams cut their own valleys and systematically carve their own drainage basins
What is base level?
the lowest point to which a stream can erode
What is Penck's theory of erosion?
parallel slope retreat
What is Hack' theory of erosion?
both downward and back erosion occurs--surface features remain intact (Equilibrium Theory)
What are the benefits of topographic maps? What are the drawbacks?
- low cost
- easy to view & covers sizeable area (provides regional context)
- directions, distances, locations, vegetation (w/o leaving office)

- not precision instruments
- the older it is the less likely it is to be accurate
- not all maps are of the same generation
What is slope?
the angle the surface of a feature makes with some reference plain (e.g. sea level)---also known as gradient, grade, or inclination
What is a large-scale map? What is a small-scale map?
A large-scale map covers a small area in great detail (e.g. 7.5 min). A small-scale map covers a large area in poor detail.
What is a map scale?
The relationship between a unit of length on the map and the actual distance on the ground.
Which soil horizon is the zone of leaching?
A horizon
Which soil horizon is the zone of accumulation?
B horizon