Photo AI
Examine the 1:50 000 Ordnance Survey map extract below and the accompanying legend which is available on page 30 and answer each of the following questions - Junior Cycle Geography - Question c - 2024
Question c
Examine the 1:50 000 Ordnance Survey map extract below and the accompanying legend which is available on page 30 and answer each of the following questions. The land... show full transcript
Worked Solution & Example Answer:Examine the 1:50 000 Ordnance Survey map extract below and the accompanying legend which is available on page 30 and answer each of the following questions - Junior Cycle Geography - Question c - 2024
Step 1
Chosen processes: Plucking and Abrasion
Answer
The landscape has been primarily shaped by glacial processes, particularly through the mechanisms of plucking and abrasion.
Plucking occurs when meltwater seeps into cracks and crevices within the rock. When the temperature drops, this water freezes, effectively anchoring itself to the rock. As the ice sheet moves, it plucks loose pieces of the rock away, transporting them along with it. This process leaves behind distinct hollows in the landscape, particularly noticeable in the features marked by tarn lakes on the map extract.
Abrasion, on the other hand, involves the scraping action that occurs when the ice sheet carries the rock debris it has plucked. As the ice moves, it acts like a natural sandpaper against the landscape, wearing down the surface and creating striations. The scratches left on the ground provide evidence of the direction in which the glacier was advancing. The combined effects of plucking and abrasion contribute greatly to the unique features observed in the landscape represented on the map.