Erosional landforms 1 (Edexcel GCSE Geography A): Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
Freeze-thaw weathering
Freeze-thaw weathering
Water repeatedly freezes in cracks, expands, breaks rock apart
Abrasion process
Abrasion process
Glacier scrapes bedrock like sandpaper
Plucking process
Plucking process
Glacier freezes onto rock, pulls it away
Corries
Corries
Bowl-shaped hollows carved by glacial erosion
Tarns
Tarns
Small circular lakes in corries
Where erosion is greatest in corries
Where erosion is greatest in corries
Where ice is thickest and heaviest
Arêtes
Arêtes
Sharp, knife-edged ridges between two corries
How arêtes form
How arêtes form
Two corries erode opposite sides of a mountain ridge
Roches moutonnées
Roches moutonnées
Asymmetric rocky outcrops showing ice flow direction
Stoss side (roches moutonnées)
Stoss side (roches moutonnées)
Smooth, gentle slope from abrasion (upstream)
Lee side (roches moutonnées)
Lee side (roches moutonnées)
Rough, steeper face from plucking (downstream)
Scree
Scree
Loose rock debris from freeze-thaw weathering
Pyramidal peaks
Pyramidal peaks
Peak with multiple corries and radiating arêtes