Weathering is the basic and first step in soil formation Consider the statements regarding weatherin...........

Geography World - Soil and Vegetation

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Weathering is the basic and first step in soil formation.

Consider the statements regarding weathering.

1) The rate of weathering increases with increasing steepness of the slope.

2) Mechanical weathering is higher in humid regions than in drier regions.

3) Chemical weathering is higher in drier regions than in humid regions.

Choose the correct statement/s from the codes below.

1 only

2&3 only

1&3 only

All of the above

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Explanation:

Steepness increases the weathering rate. The weathered rocks are easily removed by
gravity, flowing water, moving wind etc if the steepness is higher thus exposing new rocks
for weathering thereby increasing its rate. Mechanical weathering is higher in drier regions
as there exists higher diurnal temperature. Few minerals are water soluble like calcium
carbonate etc thus humid region favours the chemical weathering. Moreover water is the
main agent of chemical weathering in the rocks.