Advertisements
Advertisements
Question
Distinguish between the following:
Sheet erosion and gully erosion.
Advertisements
Solution 1
Sheet Erosion :
- Sheet Erosion causes washing out the upper layer of soil and vegetation cover due to heavy rainfall or floods.
Gully Erosion :
- Through gully erosion deep cuts, cracks and trenches are carved in the soil-bed, These tend to be deeper channels known as ‘gullies’.
Solution 2
Sheet Erosion: When the vegetation cover of an area is removed, the rain, instead of sinking into the ground, washes the soil downslope. Each succeeding rain-storm washes away a thin layer of absorbed top soil. This is known as Sheet Erosion.
Gully Erosion: When rain falls more heavily, the flow off stormwater finds its way downhill in a series of channels.
Every fresh down pour widens and deepens the channels which develop into gullies. Gullies cut up agricultural land into small fragments and make them finally unfit for cultivation. This type of erosion is known as Gully Erosion.
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 |
Distinguish between the following pair
Granular disintegration and exfoliation
Give geographical reason:
Gases in the atmosphere affect weathering.
What is weathering?
Give a technical term for the following:
Expansion of minerals in rocks on coming into contact with rainwater.
What do you understand by the following term:|
Exfoliation
What are different types of soil according to their texture?
Rewrite the following sentence, choosing the right word from the options given below:
_______is produced by the decayed organic material, including dead leaves, stems roots, living bacteria, fungi, worms, and other organisms.
Which one of the following materials is affected by hydration process?
Are physical and chemical weathering processes independent of each other? If not, why? Explain with examples.
