Erosional Landforms + Patterdale

Question 1

Corrie

Answer 1

1. A hollow is deepened by nivation
2. plucking+ abrasion of glacier forms a steep black wall
3. water goes down the back of the glacier (bergschrund) encouraging freeze thaw
4. a rocklip forms and moraine gets added to it, creating a tarn

e.g. Red Tard

Question 2

Arête

Answer 2

corries erodes backwards through plucking and abrasion
back wall becomes steeper and a steep ridge is left

e.g. striding edge

Question 3

Pyramidal Peak

Answer 3

three or more corries and arêtes meet and carve out the top of the mountain leaving a pointy peak

Question 4

U shaped valley

Answer 4

Glacier descends down a valley and scours the sides leaving a u shaped valley

e.g. Patterdale Valley

Question 5

Ribbon Lake

Answer 5

Glacier moves over hard and soft rock
rock basin gets formed
hard rock is eroded less and rainwater fills up the rock basin forming a ribbon lake

e.g. Ullswater

Question 6

Hanging valley

Answer 6

two glacial valley meet and the smaller one is eroded less, leaving it hanging above the main valley as water flows over the edge

e.g. Helvellyn

Question 7

Roche Mountonee

Answer 7

Glacier meets with a rock and advances over it. plucking occurs and fragments are removed leaving a jagged rock behind

Question 8

Misfit Stream

Answer 8

A river too small to have eroded the valley in which is flows

Question 9

truncated spurs

Answer 9

glacier moves through a river with interlocking spurs and plucking and abrasion happens eroding the tips of them, leaving truncated spurs behind

Question 10

Fjord

Answer 10

When glacial erosion happens below sea level and when the glacier retreats the valley is filled with water