Question 54

Physical weathering is occurring.

The process occurring is physical weathering, as the animal's digging action directly causes the rock to crack and split without altering its chemical composition.

A) Chemical weathering

Chemical weathering involves the alteration of the minerals within rocks through chemical reactions, often involving water and atmospheric gases. In this scenario, the primary action is physical disruption rather than any chemical change to the rock itself.

B) Erosion

Erosion refers to the movement of weathered materials from one location to another, typically by wind, water, or ice. While the animal's digging may loosen materials, it does not represent the transportation of those materials away from their original site.

C) Physical weathering

Physical weathering is characterized by the mechanical breakdown of rocks without changing their chemical structure. The animal's burrowing action exemplifies this process as it directly causes the rock to crack and split through physical force.

D) Deposition

Deposition is the process in which materials are laid down or settled in a new location, usually after being transported by erosion. In this case, there is no accumulation of materials; rather, the rock is being broken apart.

Conclusion

Physical weathering is the definitive process in this scenario because the animal's action directly leads to the physical alteration of the rock. Other options, such as chemical weathering, erosion, and deposition, do not accurately describe the mechanics involved, as they focus on different aspects of geological processes.