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Question
What are the various factors governing the formation of soil? Which one is the most important and why?
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Solution
The factors influencing the formation of soils are the parent rock, topography, vegetation, climate, and time span. Out of these climates is the most important because it controls the type of weathering the first step of the soil formation process.
RELATED QUESTIONS
Match the column
| Column A | Column B |
| 1. Granular disintegration | (i) causes feldspar to become a powdery mass |
| 2. Oxidation | (ii) is common in deserts |
| 3. Carbonation | (iii) is the simplest form of chemical weathering |
| 4. Hydration | (iv) mainly affects limestone regions |
| 5. Solution | (v) results in the rusting of iron |
Give geographical reason:
Temperature changes result in physical weathering.
Give geographical reason:
Gases in the atmosphere affect weathering.
Give geographical reason:
Human activities affect weathering.
Make a chart for your classroom showing the causes of different types of weathering.
What is known as exfoliation?
Give one example of rapid mass movement.
What do you understand by the following term:
Soil texture
Give reasons for the following :
A soil dominated by clay makes tilling difficult.
A region is having an annual mean temperature of 5°C and an annual rainfall of 1000 mm. Can you comment upon the weathering and the type with the help of the following questions? Discuss in class.
- Which type of weathering will be dominant here?
- Where will such a region be found?
