Subaerial processes of mass movement and weathering (Edexcel A-Level Geography): Flashcards
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Practise the cards
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Define weathering
Define weathering
In situ breakdown of rocks; no movement
Mechanical weathering
Mechanical weathering
Breakdown by physical force; no chemical change
Chemical weathering
Chemical weathering
Involves chemical reaction & new compounds
Biological weathering
Biological weathering
Action of plants, bacteria or animals
Water expands by what % when freezing?
Water expands by what % when freezing?
Approx 9%
Carbonation process
Carbonation process
Carbonic acid in rain dissolves limestone & carbonate rocks
Define mass movement
Define mass movement
Downslope movement of rocks/soil caused by gravity
What does rockfall form at cliff base?
What does rockfall form at cliff base?
Talus scree slope
Slip plane type in rotational slide
Slip plane type in rotational slide
Curved slip plane
What exacerbates mudflow?
What exacerbates mudflow?
High tides & heavy rainfall