Identify the primary process of mechanical weathering that fragments exposed bedrock on glaciated upland ridges, such as those in the Lake District, under conditions of fluctuating diurnal temperatures around 0∘C0^\circ\text{C}0∘C.
54 exam-style questions on Edexcel A GCSE Geography Glaciated upland landscapes and processes. Each one has a worked solution and a mark scheme showing where the marks go.