Soil is formed continuously, but slowly, when rocks break down due to weathering. Weathering is a process that can be physical, chemical, or biological:
Physical weathering is the deterioration of rocks caused by mechanical activity. Changes in temperature, abrasion (when rocks clash), and frost can all cause rocks to break down.
Chemical weathering refers to the deterioration of rocks caused by a change in their chemical composition. When the minerals in rocks react with water, air, or other chemicals, this can happen.
The degradation of rocks by living organisms is known as biological weathering. Plant roots can grow into fractures in the rock, causing it to split. Burrowing animals let water and air get into the rock, and plant roots can grow into crevices in the rock, causing it to break.
The term "soil type" refers to a variety of physical and chemical features of a soil. These properties, along with the impacts of the surrounding environment, life in the soil, and human management of the soil, affect the soil's attributes and overall soil quality.
Young soil is relatively light brownish.
- Parents material- it determines colour,texture,properties,minerals chemical.
- Relief -altitude,slope.
- Climate ,rainfall,rate of weathering and humus.
- Biological humus- flora fauna,micro organisation.
- time- thickness- mature -soil formation.
Quiz question:
- How many soil conditions are there? (5)
