techazad

· What is weathering or rock? Weathering is a part of geological cycle. It consist of disintegration and decomposition of parent rock. Weathering action take place through physical and chemical agencies. Physical agencies break down the rock in to smaller particle size without chemical change. The various agencies responsible for weathering are:- 1.    Unequal expansion and contraction due to temperature change. 2.    The weeding action of growing root of trees. 3.    Abrasion of rock by flowing water, blowing wind and moving ice.