Explain how the following factors influence the formation of soils.Parent RockThe characteristics of the parent rock have a significant influence on the composition and structure of the soil. Let's break it down:
Living organismsLiving organisms play a crucial role in the breakdown of rocks and the chemical composition of soil. Here's a breakdown of their contributions:
TopographyTopography plays a significant role in influencing weathering and soil characteristics. Here's a breakdown of its impact:
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The diagram below shows a soil profile. Use it to answer question (i) and (ii).(i) Name the parts marked A, B and C. (3 marks)
(ii) Describe the characteristics of the top soil (4 marks)
Differentiate between weathering and mass wasting.
What is chemical weathering?
Chemical weathering- is the breakdown or disintegration of rocks as a result of chemical reaction or changes that cause decay of rocks Explain the following chemical weathering process Carbonation
Hydrolysis
Explain four economic importance of weathering to physical and human environments
State five factors that affect the rate of chemical weathering in equatorial regions
Define the term mass wasting. (2mks)
This is the dorminant movement of weathered material on a slope under the influence of gravity. State two effects of weathering on the physical environment you are likely to identify. (2mks)
Your class carried out a field study on the effects of weathering along the school compound.4/7/2023 Your class carried out a field study on the effects of weathering along the school compound.
(i)State two objective for your study. (2mks)
Explains how the following factors influence weathering.
(i) Time. (2mks)
Describe how block disintegration occur in weathering. (5mks)
(a)What is weathering. (2mks)It is breaking, disintegration and decay of solid rocks at or near the surface of the earth in situ (b)State three agents of weathering. (3mks)
Define mass wasting. (2mks)
This is the movement of weathered rock materials downslope uner the influence of gravity. State THREE factors that influence mass wasting. (3mks)
Name TWO ways in which Biological weathering takes place. (2mks)
Identify THREE benefits of weathering. (3mks)
KCSE Geography Paper 1 2001 Section A Question 3. (a) What is mechanical weathering?
(b) How is an exfoliation dome formed?
KCSE Geography Paper 1 2003 Section A Question 3. a) State two conditions which may influence the occurrence of landslides
b) Using the diagram (in question paper), name(i) The type of mass movement shown
(ii) The features marked P and Q
KCSE Geography Paper 1 2006 Section A Question 2. Give two processes involved in each of the following types of weathering |
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