(i)
A – Pyramidal peak
B – Arete
C – Waterfall
D – Glacial trough/glacial valley
(ii)
A –Pyramidal peak
(a) Ice settles on several shallow hollows around the mountain side
(b) Freeze-thaw action deepens the hollows.
(c) Nivation, plucking and abrasion attack the sides and floor of the depression leading to the formation of many cirques.
(d) The back walls of the cirques recede as a result of plucking leading to the formation of
arêtes.
(e) The arêtes converge at the mountain top forming a steep-side pyramidal peak/horn
surrounded by corries.
D – Glacial trough
(a) As the glacier moves down the valley it is feed by several tributary glaciers.
(b) Its erosive power increases causing it to deepen, straighten and widen its valley.
(c) As a result a wide flat-bottomed valley with a u-shaped cross profile known as a glacier
trough is formed.
maurice.mutuku answered the question on August 7, 2019 at 06:22
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