Respuesta :
The answer is frost wedging.
Weathering is a process by which big rocks broke down into smaller pieces or they crack.
What are types of rock weathering?
- Rock weathering are mainly of 4 types- chemical weathering, frost wedging, exfoliation and biological weathering.
- When a rock mass is subjected to weathering and the removal of overlying rock, the confining pressure on the rock is reduced and the rock expands. This unloading promotes cracking of the rock, known as exfoliation.
- Frost wedging is a process in which water seeps into cracks in the rock, and water expands as it freezes, and thus enlarges the cracks.
- In chemical weathering, the chemical composition of rock changes by reacting with surroundings.
- Biological weathering is the breaking of rocks due to roots of plants or some other biological factors.
- Hence, the fact that water expands its volume as it freezes is the basis of frost wedging.
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