Consider the following pairs:
| Land Forms | Agents | |
|---|---|---|
| (a) | Levees | Wind |
| (b) | Stacks | Sea waves |
| (c) | Mushroom Rocks | River |
| (d) | Moraines | Glaciars |
Which of the following options is correct?
- AOption (a)
Only (a) and (b)
- BOption (b)
Only (b) and (c)
- COption (c)
Only (b) and (d)
- DOption (d)
Only (a) and (d)
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Correct answer
Only (b) and (d)
Why this answer is correct
The correct answer Only (b) and (d)
Key Points
- Landforms refer to the natural features on the surface of the earth that have been created through geological and geomorphological processes over time.
- These landforms are often created by agents or forces that shape the earth's surface.
- In the given pairs, we have to identify the correct agent that is responsible for the formation of a particular landform.
(a) Levees - Wind:
- Levees are natural or man-made embankments or ridges that are formed along the banks of rivers or other water bodies.
- These ridges are created by the deposition of sediment carried by the water during floods.
- While wind can cause erosion and deposition of sediment, it is not the primary agent responsible for the formation of levees. Therefore, this pair is incorrect.
(b) Stacks - Sea waves:
- Stacks are tall pillars of rock that are formed as a result of erosion by the sea waves.
- The waves erode the softer rock and leave behind the harder rock that forms the stack.
- This pair is correct because sea waves are the primary agent that forms stacks.
(c) Mushroom Rocks - River:
- Mushroom rocks are large rocks that have a distinctive shape, resembling a mushroom.
- They are often found in arid environments and are formed due to the process of erosion by wind.
- While rivers can also cause erosion, they are not the primary agent responsible for the formation of mushroom rocks. Therefore, this pair is incorrect.
(d) Moraines - Glaciers:
- Moraines are ridges or mounds of glacial debris that are deposited by glaciers.
- Glaciers are slow-moving masses of ice that can carry large amounts of rocks, soil, and other debris.
- As glaciers move, they transport this debris and deposit it along their edges and terminus.
- This pair is correct because glaciers are the primary agent responsible for the formation of moraines.
In conclusion, the correct pair of landform agents is (d) Moraines - Glaciers