A. Free-face slope
B. Concave slope
C. Convex slope
D. Rectilinear slope
Choose the correct answer from the options given below:
Hill Slope Elements: Ridge to Valley Order
A standard hillslope profile exhibits a characteristic sequence of elements from the ridge crest down to the valley floor. This sequence represents the typical evolution and form of a landscape under various geomorphic processes.
Understanding the Sequence
- Convex slope (C): This is the uppermost part of the slope, located near the ridge. It typically has an outward curve, formed by weathering and erosion processes near the crest.
- Free-face slope (A): Situated below the convex slope, this is a steep section often characterized by exposed rock or a near-vertical drop. It forms where erosion outpaces weathering, exposing resistant rock layers.
- Rectilinear slope (D): Found below the free-face or convex element, this is a straight, uniform slope. It often represents an intermediate stage or a balance between erosional forces.
- Concave slope (B): This is the lowest part of the slope, leading into the valley. It has an inward curve, where eroded material accumulates and processes like soil creep are dominant.
Determining the Correct Order
Arranging these elements from the highest point (ridge) to the lowest point (valley) yields the following sequence:
- Convex slope (C) - Ridge crest
- Free-face slope (A) - Below convex
- Rectilinear slope (D) - Below free-face
- Concave slope (B) - Valley floor
Thus, the correct order is C, A, D, B.
Important Questions from Geomorphology
Which one of the following is not an igneous rock?
Which of the following statements is/are correct?
1. Hypocenter is the point on the surface of the Earth, nearest to the focus.
2. Velocity of earthquake waves is higher in denser materials.
3. P waves move faster and are the first to arrive at the surface of the Earth.
Select the correct answer using the code given below:
Which one of the following is the lowermost/innermost intrusive igneous rock?
The formation of ‘tors’ on small rocky hills is associated with which among the following?
Which one of the following statements about metamorphic rocks is not correct?
