EVERYDAY SCIENCE

Detailed explanation-1: -Mechanical weathering-occurs when physical forces break rock into smaller and smaller pieces without changing the rock’s mineral composition.

Detailed explanation-2: -How does time affect the physical weathering of a rock? The longer the rock has been exposed, the more it has weathered.

Detailed explanation-3: -Exfoliation is a form of mechanical weathering in which curved plates of rock are stripped from rock below. This results in exfoliation domes or dome-like hills and rounded boulders. Exfoliation domes occur along planes of parting called joints, which are curved more or less parallel to the surface.

Detailed explanation-4: -Abrasion is the grinding of rock by impact and friction during transportation. Rivers, glaciers, wind, and waves all produce abrasion.