Formation of a U shaped valley

Question 1

Introduction 1st mark
(A U shaped valley…)

Answer 1

A U shaped valley is a deep, steep sided,, wide bottomed valley - may have a misfit strap and a ribbon lake, i.e Glen Cova

Question 2

Glacier formation 1st mark
(Snow accumulates…)

Answer 2

Snow accumulates on a north/northeast facing hollow on a mountainside

Question 3

Glaciation formation 2nd mark
(Here, more…)

Answer 3

Here, more snow accumulates in winter than melts in summer, this snow is compressed to form neve ice.

Question 4

During glaciation 1st mark
(Corrie glaciers…)

Answer 4

Corrie glaciers flow downhill due to gravity.

Question 5

During glaciation 2nd mark
(Into a…)

Answer 5

Into a V shaped valley.

Question 6

During glaciation 3rd mark
(Plucking occurs…)

Answer 6

Plucking occurs on the sides of the valley making them steeper.

Question 7

During glaciation 4th mark
(Plucking is…)

Answer 7

Plucking is when ice freezes onto bedrock, pulling loose rocks away as it moves.

Question 8

During glaciation 5th mark
(Moraine from plucking…)

Answer 8

Moraine from plucking and FTW becomes embedded in the ice and grinds the base of the valley floor deepening it.

Question 9

During glaciation 6th mark
(This is…)

Answer 9

This is abrasion.

Question 10

During glaciation 7th mark
(Forming…)

Answer 10

Forming interlocking spurs.

Question 11

During glaciation 8th mark
(Interlocking spurs may…)

Answer 11

Interlocking spurs may be cut off by the glacier as it flows downhill leaving truncated spurs.

Question 12

After glaciation 1st mark
(The valley left…)

Answer 12

The valley left after glaciation will be wider and straighter.

Question 13

After glaciation 2nd mark
(Often with a…)

Answer 13

Often with a misfit stream which no longer fits the valley floor.