Which statements are correct? (A) Denudation involves weathering, mass wasting and erosion. Choose the correct answer.
(B) Physical weathering and mechanical weathering are different processes distinguished only by scale.
(C) In dry climates, salt-crystal growth can help form hollows near the bases of sandstone cliffs.
(D) Exfoliation means the breakup of rock into individual mineral grains, rather than the peeling of sheets or layers.
(A) and (C) only
A and C are correct. Denudation includes processes that wear down the land, including weathering, mass movement and erosion. Salt crystallisation can disrupt porous sandstone. Physical and mechanical weathering are synonymous; exfoliation is sheet or layer detachment, whereas separation into grains is granular disintegration. Thermal stresses can contribute to exfoliation.
Important Questions from Geomorphology
- Which of the following is a shallow desert depression formed by wind erosion?
- Volcanoes are often found in which type of plate boundary?
- Which of the following is NOT a part of chemical weathering?
- What is the disintegration of rocks into smaller fragments without any change in their chemical composition called?
- A flat or gently sloping surface left behind after river erosion, often with some resistant remnants, is known as:
