During the processes of soil formation, the cracks or crevices that are first noticed on the rocks are normally caused by
Answer Details
The cracks or crevices that are first noticed on rocks during the process of soil formation are typically caused by "temperature".
Temperature changes can cause rocks to expand and contract, which can lead to the formation of cracks or crevices. This is particularly true in areas with a wide range of temperatures, where rocks may experience rapid heating and cooling cycles. For example, in desert regions, rocks can become very hot during the day and cool down rapidly at night, which can cause them to expand and contract, and eventually break apart.
While other factors such as ice, wind, and solution can also contribute to the formation of cracks or crevices on rocks, temperature is often the primary cause. Ice can cause rocks to crack through a process known as freeze-thaw weathering, while wind can cause abrasion and wear. Solution can dissolve certain types of rock, particularly those that contain minerals such as limestone, which can lead to the formation of caves and other geological features. However, these processes typically occur over longer periods of time than the rapid temperature changes that cause rocks to crack.
Therefore, temperature is the factor that is most likely to cause the initial cracks or crevices on rocks during the process of soil formation.