Physical Weathering Processes

Physical or mechanical weathering processes depend on some applied forces. The applied forces could be:

(i) gravitational forces such as overburden pressure, load and shearing stress;

(ii) expansion forces due to temperature changes, crystal growth or animal activity;

(iii) water pressures controlled by wetting and drying cycles.

Most of the physical weathering processes are caused by thermal expansion and pressure release. These processes are small and slow but can cause great damage to the rocks because of the continued fatigue the rocks suffer due to the repetition of contraction and expansion.

Weathering| Class 11 Geography Notes

Weathering is the process of breaking down rocks, minerals, and other materials on the Earth’s surface. It is a natural process that is caused by a variety of factors, including wind, water, ice, temperature changes, and plants and animals. Weathering can occur in a variety of different environments, from deserts to mountains to oceans. Weathering is an important process because it helps to create soil, which is essential for plant growth. It also helps to shape the Earth’s surface by breaking down rocks and creating new landforms. Weathering can also have a negative impact on human activities, such as by causing erosion and damage to buildings and infrastructure.

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