Physical
It cracks the rock
How do cracks affect the rate of weathering
Weathering is the process which breaks rocks into smaller bits. This is one type of weatheringPhysical weathering is a physical action which breaks up rocks : An example of this is called freeze-thaw weathering when water gets into tiny cracks in rocks. When the water freezes it expands, if this is repeated the crack grows and bits eventually break off.
Joints. This particular type of jointing is called "frost-wedging", and is a type of physical weathering.
Water goes into small cracks in the rocks and then freezes. Water expands as it freezes and the expansion pushes outwards on the crack in the rock making it bigger. Eventually this process causes the rock to crack and flake apart
It is a form of weathering known as frost wedging.
It is a form of weathering known as frost wedging.
It is called "frost weathering" or "freeze-thaw weathering" and occurs because water that freezes within the cracks in rocks will expand, compressing and eventually fracturing the rock.
Frostwegging
It is simply called freeze-thaw weathering.
When ice forms in cracks in rocks, the kind of weathering is known as mechanical weathering. The type of mechanical weathering that freezes and thaws is frost wedging.
It cracks the rock
How do cracks affect the rate of weathering
Water expands when it freezes, therefore it tends to cause the rocks to crack (or perhaps I should say, it causes existing cracks to get larger, leading to the disintegration of the rock).
cracks open wider
cracks open wider
Weathering is the process which breaks rocks into smaller bits. This is one type of weatheringPhysical weathering is a physical action which breaks up rocks : An example of this is called freeze-thaw weathering when water gets into tiny cracks in rocks. When the water freezes it expands, if this is repeated the crack grows and bits eventually break off.