Mechanical weathering is the physical disintegration of rock into bits and masses.
In this process, agents of weathering combines to fracture rocks into bits. There are different type of mechanical weathering. It is also known as physical weathering.
Frost wedging occurs in temperate and polar regions where temperature is very low. Cracks in rocks are filled water and when the freezes it expands. As the water melts during summer and freezes in the winter, frost wedge forms.
Salt crystal growth on rocks can cause mechanical weathering.
Pressure release from the surface of rock leads to exfoliation domes.
Wetting and drying of a rock leads to mechanical weathering
