The formation of soil occurs from both physical and chemical processes. Which of the following is not a physical process that creates soil?

plant roots forcing their way into a crack of a rock, causing the rock to split
water freezing into rock depressions creating cracks that breaks down the rock
abrasions caused by friction of moving rocks against each other resulting in rocks breaking into fine particles
a rock slowly dissolving into a salty solution

1 answer

The process that is not a physical process that creates soil is:

a rock slowly dissolving into a salty solution.

This process is a chemical process, as it involves the chemical alteration of the rock, leading to its dissolution, rather than a physical change in structure or form. The other options describe physical processes that contribute to the mechanical breakdown of rocks, which can lead to soil formation.