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प्रश्न
A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.
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उत्तर
The soil surface has loose top soil which is easier to dig. At deeper layers, partially weathered rocks or bedrocks are present which are hard and make digging difficult.
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संबंधित प्रश्न
Sketch the cross section of soil and label the various layers.
Give geographical reason:
Soil is a very important resource.
Give geographical reason:
There is a need for soil conservation.
Distinguish between contour tilling and contour bunding.
Explain any two methods of soil conservation briefly.
Form pairs or groups of three or four students and discuss, with examples, how we depend directly and indirectly on soil.
Unscramble the following jumbled word related to soil.
\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{O}}\]\[\boxed{\text{S}}\] \[\boxed{\text{F}}\]\[\boxed{\text{I}}\]\[\boxed{\text{P}}\]\[\boxed{\text{R}}\]\[\boxed{\text{O}}\]\[\boxed{\text{L}}\]\[\boxed{\text{E}}\]
Unscramble the following jumbled word related to soil.
\[\boxed{\text{M}}\]\[\boxed{\text{O}}\]\[\boxed{\text{A}}\]\[\boxed{\text{L}}\]
Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rain water during the journey but to his surprise, he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.
Match the animals in Column I with their natural place of dwelling (habitat) in Column II.
| Column I | Column II | ||
| (a) | Earthworm | (i) | Sand and beaches |
| (b) | Garden lizard | (ii) | Burrows in soil |
| (c) | Crab | (iii) | Deep, narrow holes in dry soils |
| (d) | Rodents | (iv) | Surface of soil |
| (e) | Scorpion | (v) | The surface of shaded moist soils |
| (f) | Snails and slugs | (vi) | A horizon of moist soils |
