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There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation?
- Shallow sea at the mouth of the river
- Long river
- High erosion in the catchment area of the river
Select the correct answer using the code given below.
- a)1 only
- b)1 and 2 only
- c)2 and 3 only
- d)1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
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There are certain conditions required for the formation and growth of ...
Favorable Conditions for Delta Formation
1. Shallow Sea at the Mouth of the River:
A shallow sea at the mouth of the river is a favorable condition for delta formation because it allows sediment deposition. When a river reaches the sea, it loses its velocity, causing the sediment it carries to settle down. If the sea is shallow, the sediments can accumulate and form a delta. The shallow sea acts as a basin and allows the sediments to spread out and settle, leading to the formation and growth of a delta.
2. Long River:
A long river is also a favorable condition for delta formation. A longer river has a larger catchment area, which means it collects more sediments from its surroundings. As the river flows towards the sea, it carries these sediments with it. When the river reaches the sea, the sediments are deposited, forming a delta. The larger the catchment area, the more sediments are available for delta formation.
3. High Erosion in the Catchment Area of the River:
High erosion in the catchment area of the river is another favorable condition for delta formation. Erosion refers to the process of wearing away and transporting sediments. When there is high erosion in the catchment area, it means that more sediments are being carried by the river. These sediments are then transported and deposited at the mouth of the river, forming a delta. High erosion ensures a continuous supply of sediments to feed the delta and aid its growth.
Explanation:
The correct answer is option 'D' because all three conditions - a shallow sea at the mouth of the river, a long river, and high erosion in the catchment area - are favorable for the formation and growth of deltas. A shallow sea allows sediment deposition, a long river collects more sediments, and high erosion ensures a continuous supply of sediments. When these conditions are present, deltas can form and expand over time.
1. Shallow Sea at the Mouth of the River:
A shallow sea at the mouth of the river is a favorable condition for delta formation because it allows sediment deposition. When a river reaches the sea, it loses its velocity, causing the sediment it carries to settle down. If the sea is shallow, the sediments can accumulate and form a delta. The shallow sea acts as a basin and allows the sediments to spread out and settle, leading to the formation and growth of a delta.
2. Long River:
A long river is also a favorable condition for delta formation. A longer river has a larger catchment area, which means it collects more sediments from its surroundings. As the river flows towards the sea, it carries these sediments with it. When the river reaches the sea, the sediments are deposited, forming a delta. The larger the catchment area, the more sediments are available for delta formation.
3. High Erosion in the Catchment Area of the River:
High erosion in the catchment area of the river is another favorable condition for delta formation. Erosion refers to the process of wearing away and transporting sediments. When there is high erosion in the catchment area, it means that more sediments are being carried by the river. These sediments are then transported and deposited at the mouth of the river, forming a delta. High erosion ensures a continuous supply of sediments to feed the delta and aid its growth.
Explanation:
The correct answer is option 'D' because all three conditions - a shallow sea at the mouth of the river, a long river, and high erosion in the catchment area - are favorable for the formation and growth of deltas. A shallow sea allows sediment deposition, a long river collects more sediments, and high erosion ensures a continuous supply of sediments. When these conditions are present, deltas can form and expand over time.
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There are certain conditions required for the formation and growth of ...
- Deltas are landforms formed at the mouth of a river, where the river meets a body of water such as sea, lake, ocean and are roughly triangular in shape. Deltas range from few square kilometers to thousands of square kilometers. Ganga Delta is the largest delta in the world.
- The ideal conditions for the formation of a delta are:
- Shallow sea: A deep-sea may result in the sediments getting deposited into the bottom of the sea and weaken the delta formation.
- Long River: The longer the river more is the possibility of the river bringing more sediments from its catchment areas and depositing them near the mouth of the river.
- High erosion in the catchment area of the river More erosion brings more sediments into the river stream which helps in delta formation.
- Medium size of the sediments If the sediments are small then they would be carried into the sea in suspension and if the sediments are large they would soon settle at the bottom of the sea resulting in no delta formation.
- Calm sea at the mouth of the river so that ocean currents do not carry away the sediments by the river.
- Stable condition of sea coast with no submergence or emergence due to tectonic activity.
- Hence, option (d) is the correct answer.
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There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
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There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There are certain conditions required for the formation and growth of deltas by rivers. In this context which of the following are favourable conditions for delta formation? Shallow sea at the mouth of the river Long river High erosion in the catchment area of the riverSelect the correct answer using the code given below.a)1 onlyb)1 and 2 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
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