GL23 H:W Review- factors affecting landforms in Snowdonia Flashcards
What is Cwm Idwal and how does geology affect it?
Cwm Idwal is a corrie. It lies along a line of geological weakness, which means it erodes quicker. If the material that the hollow is made of is soft and not resistant, the corrie will deepen more easily.
What is the impact of aspect on Cwm Idwal?
Snowdonia faces North East, which means Cwm Idwal is facing away from the sun. This encourages the buildup of snow and ice, leading to more accumulation and erosion deepening the corrie.
What is the impact of climate on Cwm Idwal?
The cold climate allows snow to accumulate in corries and stay frozen, leading to the erosion and deepening of the corrie.
What is Llyn Idwal and how does geology affect it?
Llyn Idwal is a corrie lake with a linear shape. It may be affected by the geology of the surrounding area, which can affect the shape and depth of the corrie lake. If Cwm Idwal erodes quicker due to its geological weakness, it may have a deeper and more eroded corrie that contributes to Llyn Idwal’s formation.
What is the impact of aspect on Llyn Idwal?
Cwm Idwal is facing away from the sun, which leads to more snow accumulation and ice formation in the corrie, resulting in more meltwater and potentially contributing to the formation of Llyn Idwal.
What is the impact of warm temperatures on Llyn Idwal?
Warm temperatures cause the glacier in the corrie to melt and a lake to form in the hollow.
What is Cwm Cywion and how does aspect affect it?
Cwm Cywion is a hanging valley. Snowdonia faces North East, which encourages the buildup of snow and ice, eventually leading to more glacial ice and more erosion of the trunk valley, resulting in deeper hanging valleys.
What is the impact of climate on Cwm Cywion?
The cold climate allows snow to accumulate and stay frozen, leading to more erosion of the main valley and the formation of hanging valleys.
What is Nant Ffrancon valley and how does geology affect it?
Nant Ffrancon valley is a U-shaped valley that was carved by a glacier moving north-west. The valley would have been made of rock that is not resistant to erosion. The rock at the waterfalls is particularly hard and resistant to erosion.
What is the impact of aspect on Nant Ffrancon valley?
Snowdonia faces North East, which encourages the buildup of snow and ice, leading to more accumulation and eventual erosion and deepening of the valley.
What is the impact of climate on Nant Ffrancon valley?
The cold climate allows snow to accumulate and stay frozen, leading to more erosion of the valley.
What is Cwm Coch and how does geology affect it?
Cwm Coch is a corrie. The back wall of the corrie gets steeper due to freeze-thaw weathering and plucking, and the base of the corrie becomes deeper due to abrasion. If the material that the hollow is made of is soft and not resistant, these erosional processes will happen at a faster rate, deepening the corrie more easily.
What is the impact of aspect on Cwm Coch?
Snowdonia faces North East, which encourages the buildup of snow and ice, leading to more accumulation and erosion of the corrie through processes such as freeze-thaw weathering, plucking, and abrasion
