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 the above.
Explanation:
Steepness increases the weathering rate. The weathered rocks are easily removed bygravity, flowing water, moving wind etc if the steepness is higher thus exposing new rocksfor weathering thereby increasing its rate. Mechanical weathering is higher in drier regionsas there exists higher diurnal temperature. Few minerals are water soluble like calciumcarbonate etc thus humid region favours the chemical weathering. Moreover water is themain agent of chemical weathering in the rocks.
Steepness increases the weathering rate. The weathered rocks are easily removed bygravity, flowing water, moving wind etc if the steepness is higher thus exposing new rocksfor weathering thereby increasing its rate. Mechanical weathering is higher in drier regionsas there exists higher diurnal temperature. Few minerals are water soluble like calciumcarbonate etc thus humid region favours the chemical weathering. Moreover water is themain agent of chemical weathering in the rocks.