Question

Write down the steps of weathering and soil formation​

Answer 1

Explanation:

WHERE DOES SOIL COME FROM?

Weathering is the breakdown of rocks and minerals into soils. Rocks are broken into three major groups: sedimentary, igneous, and metamorphic. The rock cycle illustrates how these different types of rocks form

DIFFERENT TYPES OF WEATHERING

The University of Kentucky Website has some amazing animations of physical and chemical weathering surfaces common in the different regions, from warm and wet to dry.

PHYSICAL WEATHERING

Physical weathering is the breaking of rocks into smaller pieces. This can happen through exfoliation, freeze-thaw cycles, abrasion, root expansion, and wet-dry cycles.

exfoliationexpand or crack rocks. This especially happens with granitic rocks as they were cooling, like at Yosemite National Park.

freeze-thaw - when water freezes, it expands. If moisture seeps into cracks before winter, it can then freeze, driving the rocks apart.

abrasion - when the wind blows, it can pick up sand and silt, and literally sandblast rocks into pieces.

root expansion - like freeze thaw, roots grow bigger every year. These roots can drive the roots apart.

CHEMICAL WEATHERING

Chemicals react in the environment all the time, and these cause chemical weathering. Major chemical reactions include carbonation, dissolution, hydration, hydrolysis, and oxidation-reducation reaction. All of these reactions have water involved with them.