Morphometric analysis: stream ordering, bifurcation ratio, drainage density, basin form factors and slope-profile analysis. - One Line Questions

1. A high texture ratio suggests: — A fine drainage texture with closely spaced streams
2. A higher relief ratio generally suggests: — A steeper basin with higher erosion potential
3. A higher bifurcation ratio generally indicates: — A more youthful and rapidly developing drainage basin
4. When analyzing stream profiles, a knickpoint usually indicates: — A zone of recent base-level change or differential erosion
5. The 'circularity ratio' (Rc) compares the drainage basin's area to the area of: — A circle with the same perimeter as the basin
6. A 'graded stream' is characterized by: — A concave longitudinal profile with a slope just sufficient to transport the load
7. A concave longitudinal profile of a stream is often indicative of: — A graded stream in equilibrium
8. The formula for the basin form factor (Bf) is typically expressed as: — (4 * pi * Area) / (Perimeter^2)
9. Low drainage density is characteristic of: — Areas with dense vegetation and high infiltration rates
10. The 'length of overland flow' is inversely related to: — Drainage density
11. The 'relief ratio' (Rh) is calculated as the total basin relief divided by the: — Basin length
12. Which of the following morphometric parameters is most directly influenced by the geological structure and lithology of a region? — Drainage density
13. Which morphometric parameter is most sensitive to changes in land use and vegetation cover? — Drainage density
14. Horton's law of stream lengths states that the average lengths of streams of successive orders form a geometric progression. This is often represented by the: — Length ratio
15. A basin form factor significantly less than 1 suggests a basin that is: — Highly elongated
16. A drainage basin with an elongation ratio significantly less than 1 is likely: — Highly elongated
17. The 'ratio of basin area to basin perimeter' is a component used in calculating which morphometric parameter? — Circularity ratio
18. The process of assigning a numerical rank to streams within a drainage basin is known as: — Stream ordering
19. Which method is primarily used to quantify the shape and characteristics of drainage basins and stream networks? — Morphometric analysis
20. The 'drainage basin' or 'watershed' is the fundamental unit for which type of analysis? — Morphometric analysis
21. Which factor has the LEAST direct influence on drainage density? — Vegetation cover
22. A basin form factor of 1 indicates a basin that is: —
23. An elongation ratio of 1.0 suggests a basin shape that is: — Circular
24. A circularity ratio close to 1 indicates a basin that is: — More circular
25. Which aspect of a drainage basin is MOST directly revealed by analyzing its bifurcation ratio? — The degree of dissection and branching of the network
26. The concept of bifurcation ratio is closely related to which of Horton's laws? — Law of stream numbers
27. The 'length ratio' (Rl) in morphometric analysis represents the ratio of the average length of streams of order 'n' to the average length of streams of order: — n+1
28. A high drainage density is typically associated with: — Impermeable rock types, steep slopes, and low infiltration
29. Which stream ordering system assigns the highest order number to the main trunk stream of a basin? — Strahler system
30. Which morphometric parameter provides insights into the stage of geomorphic evolution of a drainage basin? — All of the above
31. Which analysis provides information about the relative proportions of different slope classes within a drainage basin? — Slope analysis
32. The 'mean stream length' (Lsm) is an important parameter for calculating: — Texture ratio
33. Which of the following is NOT a typical component of morphometric analysis of drainage basins? — Sediment load measurement
34. The 'texture ratio' (T) in morphometric analysis is related to: — Stream frequency and basin area
35. The 'drainage texture' refers to the overall pattern of drainage lines within a basin and is influenced by: — Stream frequency and drainage density
36. Morphometric analysis helps in understanding the hydrological behavior of a basin, particularly its response to: — Precipitation events
37. What does the bifurcation ratio (Rb) represent in a drainage network? — The ratio of the number of streams of order 'n' to the number of streams of order 'n+1'
38. The 'gradient ratio' is a measure used in profile analysis to describe: — The change in slope along a stream channel
39. Slope analysis in morphometric analysis helps understand: — The erosion and depositional processes
40. According to the Horton's law of stream orders, which of the following is typically true for a drainage basin? — The number of streams of any order is roughly a geometric progression.
41. Profile analysis in morphometric analysis typically involves examining: — The longitudinal profile of a stream channel
42. What does the 'elongation ratio' (Re) measure in a drainage basin? — The ratio of the basin area to the area of a circle with the same circumference
43. The 'hypsometric integral' is a graphical representation used in morphometric analysis to depict: — The distribution of elevation within a drainage basin
44. In the Strahler stream ordering system, if two streams of the same order merge, the resulting stream is assigned: — An order number one higher than the merging streams
45. The basin form factor (Bf) is a measure of: — The elongation of a drainage basin
46. Drainage density (Dd) is defined as: — The total stream length divided by the total basin area
47. The 'stream frequency' (Fs) is defined as: — Number of streams divided by basin area
48. A hypsometric curve that is convex upwards typically indicates a drainage basin in which stage of geomorphic evolution? — Youthful
49. A hypsometric curve that is concave upwards usually suggests a basin that is: — Old age
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