A level 2020

Question 1

Outline the process of sub-aerial weathering in the development of coastal landscapes. (4 marks)

Answer 1

• Sub-aerial weathering involves the action of rainwater upon landforms in coastal landscapes
• Material is broken in situ, rocks are weakened and can contribute to sudden large-scale movements
• Chemical weathering occurs when weak carbonic acid in rainwater attacks limstone cliffs
• This leads to the formation of karst landscapes.

Question 2

Using Figure 6 and your own knowledge, assess the view that rock type is the most important factor in the development of this landscape. (6 marks)

Answer 2

AO2:
* Formation: caves, arches, stacks and stumps
* Limestone in the image and withstand wave action overtime
* Sub-aerial weathering impacting limestone, rock type is important
* High energy coast by undercutting of destructive waves. Strong winds and long fetch to sustain waves