Glacial processes (Edexcel GCSE Geography A): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
By what percentage does water expand when it freezes during freeze-thaw weathering?
By what percentage does water expand when it freezes during freeze-thaw weathering?
9%
What is the name for loose rock fragments that accumulate at the base of slopes?
What is the name for loose rock fragments that accumulate at the base of slopes?
Scree
What are striations and what do they indicate?
What are striations and what do they indicate?
Grooves in bedrock showing ice flow
How does abrasion erode the landscape?
How does abrasion erode the landscape?
By rocks scraping bedrock like sandpaper
What happens during the plucking process?
What happens during the plucking process?
Loosened blocks freeze to ice & get pulled
What enables basal sliding to occur?
What enables basal sliding to occur?
Meltwater acting as a lubricant
How does fluvioglacial material differ from till deposits?
How does fluvioglacial material differ from till deposits?
It's well-sorted; till is unsorted
What causes internal flow in glaciers?
What causes internal flow in glaciers?
Ice crystals sliding over each other
When did the Pleistocene glacial period end?
When did the Pleistocene glacial period end?
12,000 years ago
What conditions caused glaciers to advance across the UK?
What conditions caused glaciers to advance across the UK?
Winter accumulation exceeding summer ablation
When are post-glacial processes particularly active?
When are post-glacial processes particularly active?
During spring with freeze-thaw & snowmelt