GENERAL GEOLOGY

Detailed explanation-1: -Mechanical Weathering Mechanical weathering, also called physical weathering and disaggregation, causes rocks to crumble. Water, in either liquid or solid form, is often a key agent of mechanical weathering. For instance, liquid water can seep into cracks and crevices in rock.

Detailed explanation-2: -Physical weathering, also called mechanical weathering, is a process that causes the disintegration of rocks, mineral, and soils without chemical change. The primary process in physical weathering is abrasion (the process by which clasts and other particles are reduced in size).

Detailed explanation-3: -Thermal expansion and contraction: Spheroidal weathering in granite. La Serena, Chile. Rocks and minerals are fragmented by mechanical processes.

Detailed explanation-4: -When rock is exposed to high temperatures, it expands and as the temperatures cool, it contracts. This continual expansion and contraction cause the rocks to weaken and eventually break into pieces. Thermal expansion weathering is similar to Freeze-Thaw weathering.

Detailed explanation-5: -Physical weathering is the breaking of rocks into smaller pieces. This can happen through exfoliation, freeze-thaw cycles, abrasion, root expansion, and wet-dry cycles. Exfoliation: When temperature of rocks rapidly changes that can expand or crack rocks.