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प्रश्न
Distinguish between the following:
Sheet erosion and gully erosion.
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उत्तर १
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’.
उत्तर २
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.
संबंधित प्रश्न
Give geographical reason:
Gases in the atmosphere affect weathering.
List any three factors that affect weathering.
In which regions of the world is ‘frost action’ the common form of weathering?
What is gradation? Describe the two processes involved in gradation.
What are exogenic forces?
Give a technical term for the following:
Peeling off of the outer layer of rock through contraction and expansion.
Rewrite the following sentence, choosing the right word from the options given below:
_______soils are those which are undisturbed by erosion or deposition.
Describe the work of plants as agents of weathering.
Give a geographical reason:
Temperature is the main factor behind granular weathering.
On the basis of the given points, differentiate between weathering and erosion.
| Weathering | Erosion | |
| Definition | ||
| Causes/Agents | ||
| Effect/Results | ||
| Examples |
