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Hillslope
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What is the genetic classification of hillslopes based on?
Options:
- The mode of their origin and development
- The types of vegetation cover on the slopes
- The steepness levels of the slopes
- The soil composition of the slopes
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Which of the following is an example of a convex-rectilinear-free face-rectilinear-concave slope?
Options:
- A slope with a convex upper portion, a straight middle portion, a basal free face, a straight lower portion, and a concave base
- A slope with a convex upper portion, a straight middle portion, a concave basal portion, and a free face at the base
- A slope with a convex upper portion, a straight middle portion, a basal free face, and a concave base
- A slope with a convex upper portion, a basal free face, and a concave base
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What is an example of a tectonic slope?
Options:
- Valley side slope
- Morainic ridges deposited by glaciers
- Free face and pediment slopes
- Scarp slope
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What are the three stages of erosion for erosional slopes developed by rivers?
Options:
- Concave, rectilinear, convex
- Convex, rectilinear, concave
- Concave, convex, rectilinear
- Rectilinear, convex, concave
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What is the definition of aggradational slopes?
Options:
- Slopes formed due to surface erosion and weathering
- Slopes formed due to deposition of eroded sediments
- Minor slopes developed at the base of primary slopes
- Steep cliff slopes formed by sea waves
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What are primary slopes?
Options:
- Minor slopes developed at the base of primary slopes
- Slopes formed due to surface erosion and weathering
- Slopes formed due to deposition of eroded sediments
- Slopes formed due to erosion by streams, glaciers, sea waves et
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What are secondary slopes?
Options:
- Minor slopes developed at the base of primary slopes
- Slopes formed due to surface erosion and weathering
- Slopes formed due to deposition of eroded sediments
- Steep cliff slopes formed by sea waves
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What is quantitative classification?
Options:
- Classification based on the type of slope genesis
- Classification based on the stage of formation of slopes
- Classification based on slope angles
- Classification based on the denudational processes
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How many major categories did Young classify slopes into based on slope angles?
Options:
- Five
- Six
- Seven
- Eight
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What are some of the problems of slope development according to the text?
Options:
- Varying forms of slopes, slope is a three-dimensional feature, and relationships between climatic factors and slope forms
- Geological structure and lithology, progressive changes in slope forms with time, and denudation balance of slope
- Parallel retreat of slope and grading of slope profile, and relationships between mass movements and slopes
- All of the above
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What are the three approaches to the study of slope development according to the text?
Options:
- Theoretical approach, experimental approach, and empirical approach
- Geological approach, climate approach, and denudational approach
- Field approach, laboratory approach, and theoretical approach
- Experimental approach, field approach, and climate approach
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What is the “model of slope decline” in geomorphology?
Options:
- A model that suggests slopes always decline in slope gradient over time.
- A model that suggests slopes maintain their angles through parallel retreat.
- A model that suggests slopes can either decline in gradient or maintain their angles through parallel retreat.
- A model that suggests slopes maintain their angles until they erode completely.
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What are some of the difficulties faced by geomorphologists when attempting to describe the historical evolution of slopes?
Options:
- Lack of requisite evidence and problems with dating slope development.
- Lack of interest in the subject matter and difficulties with accessing the slopes.
- Difficulty in measuring slope angle and inconsistency in the types of rocks.
- None of the above.
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According to the process-form approach, what is the relationship between slope types and geomorphic processes?
Options:
- There is no relationship between slope types and geomorphic processes.
- There is an indirect relationship between slope types and geomorphic processes.
- There is a direct relationship between slope types and geomorphic processes.
- There is a direct relationship between slope types and vegetation cover.
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What are some of the difficulties faced by the process-form approach?
Options:
- The difficulty in isolating the processes affecting slope development and the fact that slope forming processes operate very slowly.
- The difficulty in measuring slope angle and the inconsistency in the types of rocks.
- The difficulty in measuring the rates of action of slope forming processes and the lack of interest in the subject matter.
- None of the above.
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What is the concept of climatic uniformitarianism according to L. King?
Options:
- The idea that slope forms are controlled by unique factors in each climate.
- The idea that slope forms are controlled by several factors and are found in almost all climates.
- The idea that slope forms are only found in arid and semi-arid climates.
- The idea that slope forms are only found in humid temperate climates.
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Which of the following is not a factor that controls slope forms?
Options:
- Geological structure
- Vegetation cover
- Rainfall intensity
- Mass wasting
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What are the two approaches to the study of process-form approach of slope studies?
Options:
- Soil creep and debris flow
- Mono-process and poly-process concepts
- Overland flow and rain splash
- Rill and gully erosion
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According to N.M. Fenneman, what is the result of differential actions of surface runoff and overland flow on convexo-concave hillslopes?
Options:
- The crestal areas of hillslope are eroded by surface runoff and debris flow.
- The crestal areas of hillslope are least eroded by surface runoff and rainwash smoothes the hill crest to give it a convex plan.
- The basal segment of hillslope is least eroded by surface runoff and debris flow and the crestal areas are most erode
- The basal segment of hillslope is most eroded by surface runoff and rainwash smoothes the hill crest to give it a concave plan.
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According to G.K. Gilbert, what is the most dominant process in the development of convex slope of a hillslope profile?
Options:
- Rainwash
- Soil creep
- Debris flow
- Overland flow