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Question
Study the figure given below and answer the following questions.
Questions:
- Which rocks are mainly found here?
- Identify the spot where the stream disappears.
- Which major erosional process works in this area?
- Identify the landforms formed by deposition.
- Why do depositional landforms not form on the surface in areas of Karst terrain?
Short Note
Solution
- Soluble rock like limestone, a sedimentary rock composed of Calcium Carbonate (CaCO3) is found.
- Steam will disappear below the sinkhole.
- The solution is the major erosional process in this area.
- Stalactite, Stalagmite, columns, or pillars are the landforms formed by deposition.
- In Karst, terrain groundwater dissolves minerals like calcium carbonate present in the rocks. The dripping water leaves behind a deposit of calcium carbonate. The water saturated with calcium carbonate dripping on the floor of a cave deposits calcium carbonate on the floor. Thus, depositional landforms do not form on the surface in the areas of Karst terrain.
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Introduction of Agents of Erosion
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RELATED QUESTIONS
Complete the table:
| Agents | Erosional landforms | Depositional landforms |
| 1) River | ||
| 2) Wind | ||
| 3) Sea waves | ||
| 4) Groundwater | ||
| 5) Glacier |
Choose the correct option by identifying the correct correlation in the sentence:
Water or snow enters the cracks in the rocks and makes it weak. When the glacier passes on these rocks, it pulls the rocks at the bottom along with it. This process is called ________.
Write a short note on Attrition
Answer in detail:
Which agents of erosion can you see on the cover page of the textbook? Which landforms can you see there? Write the process of the formation of anyone.
Draw a neat and labelled diagram for:
Deflation
Look at the figure below and answer the questions:
- What features are formed in the upper course of the river? What processes will play an important role?
- Can you mark the location where a waterfall may formed?
- Why is there a change in slope from A to B? How will it influence the flow of the river?
- Which human activities can be conducted in the region around A and B?
- In which area will the process of deposition overtake erosion?
- Alluvial fans and deltas are both features formed due to deposition but at different locations. Identify their regions of formation and the reason behind their different locations.
Find out famous examples of gorges and canyons.
