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Frost Action as a process of mechanical weathering

Answer Text:
Frost Action as a process of mechanical weathering

-Breaking of rocks into angular blocks due to repeated freezing and thawing.
- Common in temperate regions or mountainous regions of tropics where temperature fall below zero.
- Water from melting ice collects into small cracks of rocks.
- It freezes and expands and exerts pressure on cracks widening them.
- Repeated freezing and thawing causes the rocks to break into angular
Blocks which are later broken down into smaller fragments e.g. on Mt. Kenya, Kilimanjaro and Ruwenzori.