Day-622
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Question 1 of 5
1. Question
1. Badwater Basin, seen in the news recently, is located in which one of the following countries?
Correct
Answer: D
Explanation:
About Badwater Basin:
● Badwater Basin is an endorheic basin in Death Valley National Park, Death Valley, California (U.S.A).
● It is noted as the lowest point in North America and the United States, with a depth of 282 ft (86 m) below sea level.
● Near Mount Whitney, the highest point in the contiguous United States.
● Badwater Basin’s endorheic nature means water flows into it but not out, typically resulting in rapid evaporation and ephemeral lakes. However, increased precipitation over the past six months has disrupted this pattern.
Recent phenomenon which has been observed:
● Recent heavy rainfall, following Hurricane Hilary in August 2023, has altered the landscape of the region and has resulted in the appearance of a Lake.
● The lake initially reduced in size, but surprisingly persisted through the fall and winter seasons. Its recovery in February 2024 was facilitated by a robust atmospheric river that replenished its waters.
● Usually, Death Valley recieves an average annual rainfall of only 51 millimetres but a remarkable 125 mm fell in the past half-year alone, primarily due to two significant weather events. The remnants of Hurricane Hilary deposited 55.88 mm precipitation on August 20, 2023, followed by an atmospheric river bringing another 38.1 mm from February 4-7, 2024.
Incorrect
Answer: D
Explanation:
About Badwater Basin:
● Badwater Basin is an endorheic basin in Death Valley National Park, Death Valley, California (U.S.A).
● It is noted as the lowest point in North America and the United States, with a depth of 282 ft (86 m) below sea level.
● Near Mount Whitney, the highest point in the contiguous United States.
● Badwater Basin’s endorheic nature means water flows into it but not out, typically resulting in rapid evaporation and ephemeral lakes. However, increased precipitation over the past six months has disrupted this pattern.
Recent phenomenon which has been observed:
● Recent heavy rainfall, following Hurricane Hilary in August 2023, has altered the landscape of the region and has resulted in the appearance of a Lake.
● The lake initially reduced in size, but surprisingly persisted through the fall and winter seasons. Its recovery in February 2024 was facilitated by a robust atmospheric river that replenished its waters.
● Usually, Death Valley recieves an average annual rainfall of only 51 millimetres but a remarkable 125 mm fell in the past half-year alone, primarily due to two significant weather events. The remnants of Hurricane Hilary deposited 55.88 mm precipitation on August 20, 2023, followed by an atmospheric river bringing another 38.1 mm from February 4-7, 2024.
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Question 2 of 5
2. Question
2. Consider the following statements:
Statement-I: Rip currents are one of the most well-known coastal hazards on beaches around the world.
Statement-II: Rip currents are channeled currents of water flowing away from the shore at surf beaches.
Which one of the following is correct in respect of the above statements?Correct
Answer: A
Explanation: Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
Statement-I is correct:
● Rip currents are present on many beaches every day of the year, but they are usually too slow to be dangerous to beachgoers. However, under certain wave, tide, and beach shape conditions they can increase to dangerous speeds. The strength and speed of a rip current will likely increase as wave height and wave period increase.
Incorrect
Answer: A
Explanation: Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
Statement-I is correct:
● Rip currents are present on many beaches every day of the year, but they are usually too slow to be dangerous to beachgoers. However, under certain wave, tide, and beach shape conditions they can increase to dangerous speeds. The strength and speed of a rip current will likely increase as wave height and wave period increase.
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Question 3 of 5
3. Question
3. Consider the following statements:
1. River Subansiri is a right bank tributary of the Brahmaputra river.
2. River Gomati is the left bank tributary of the Ganga river.
3. River Zanskar is the left bank tributary of the Indus river.
4. River Vaitarna is a left bank tributary of the Tapi river.
How many of the above statements are correct?Correct
Answer: C
Explanation: Only Statement 4 is incorrect.
Statement 1 is correct:
● Subansiri river also known as the “Gold River” is the largest tributary of the Upper Brahmaputra river.
● It originates from the Tibetan Himalayas and makes its way to India via (Miri Hills) Arunachal Pradesh.
● It flows through Arunachal Pradesh and joins Brahmaputra as its right bank tributary in Assam.
Incorrect
Answer: C
Explanation: Only Statement 4 is incorrect.
Statement 1 is correct:
● Subansiri river also known as the “Gold River” is the largest tributary of the Upper Brahmaputra river.
● It originates from the Tibetan Himalayas and makes its way to India via (Miri Hills) Arunachal Pradesh.
● It flows through Arunachal Pradesh and joins Brahmaputra as its right bank tributary in Assam.
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Question 4 of 5
4. Question
4. Consider the following pairs:
Islands in news – Countries
1. Socotra Island – Turkey
2. Kuril Island – Japan
3. Agalega Island – Maldives
How many of the above pairs are correctly matched?Correct
Answer: D
Explanation: None of the pair is matched correctly
Pair 1 is matched incorrectly:
About Socotra Island:
● Socotra is an island of the Republic of Yemen in the Indian Ocean.
Incorrect
Answer: D
Explanation: None of the pair is matched correctly
Pair 1 is matched incorrectly:
About Socotra Island:
● Socotra is an island of the Republic of Yemen in the Indian Ocean.
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Question 5 of 5
5. Question
5. Consider the following pairs:
Types of plains – Examples
1. Structural plain – Great Plains of U.S.A.
2. Depositional plain – Plains of North Canada
3. Erosional plain – Ganga-Yamuna Plains of India
How many of the above pairs are correctly matched?Correct
Answer: A
Explanation: Only Pair 1 is matched correctly
Plains:
● Plains are the most important landforms found on the earth surface.
● A plain is nothing but a low-lying relatively flat land surface with very gentle slope and minimum local relief.
● About 55% of the earth’s land surface is occupied by plains.
Classification of plains
On the basis of their mode of formation, plains can be classified as:
a) Structural plain
b) Erosional plains
c) Depositional plains
Pair 1 is matched correctly:
Structural plains:
● They are undisturbed plain landforms on the Earth’s surface.
● They are structurally depressed areas which make up some of the most expanse natural lowlands on Earth.
● Usually, they are formed from horizontally bedded rocks relatively undisturbed by crust movements of the Earth. This type of plain landform is usually created by an uplifting diastrophic movement of a large landmass.
● Examples of structural plain landforms are:
⮚ The plains of the United States of America
⮚ The central lowlands of Australia
Pair 2 is matched incorrectly:
Depositional Plains:
This type of plain landform is formed from materials deposited by rivers, glaciers, waves and wind. The type of sediment which constitutes this plain landform has a significant impact on the fertility and economic relevance of the consequent plain formed by deposition.
Depositional Plains based on the material deposited by rivers: Alluvial plains
● Alluvial plains are vast, sweeping stretches of plain land that are formed by the deposition of sediments called alluvium.
● An alluvial plain usually includes floodplains as part of its area but extends beyond such plains. An alluvial plain represents the pattern of floodplain shift over geological time. As a river flows down mountains or hills, it carries sediments resulting from erosion and transports the sediments to the lower plain. In this way, floodplains continue growing and adding up to form massive stretches of alluvial plains.
⮚ Example – The Indo-Gangetic Plain in India and the Po Valley in Italy are examples of alluvial plains.
Pair 3 is matched incorrectly:
Erosional plains:
● These are plain landforms that are produced from the action of various agents of denudation on an existing landform.
● These agents of denudation – River, running water, glacier and wind, wear out the rugged surface on an existing landform and smoothens them, giving rise to low undulating plain landforms.
● Two major types of plains result from this mode of formation of plain landforms:
⮚ Peneplains (Almost plain): Which results from the action of the various agents of denudation mentioned above, exempting wind.
⮚ Pediplains: Erosional plains formed from wind action
● Examples of plains in this category include:
⮚ Northern Canada plains
⮚ Ice eroded plains of Western AfricaIncorrect
Answer: A
Explanation: Only Pair 1 is matched correctly
Plains:
● Plains are the most important landforms found on the earth surface.
● A plain is nothing but a low-lying relatively flat land surface with very gentle slope and minimum local relief.
● About 55% of the earth’s land surface is occupied by plains.
Classification of plains
On the basis of their mode of formation, plains can be classified as:
a) Structural plain
b) Erosional plains
c) Depositional plains
Pair 1 is matched correctly:
Structural plains:
● They are undisturbed plain landforms on the Earth’s surface.
● They are structurally depressed areas which make up some of the most expanse natural lowlands on Earth.
● Usually, they are formed from horizontally bedded rocks relatively undisturbed by crust movements of the Earth. This type of plain landform is usually created by an uplifting diastrophic movement of a large landmass.
● Examples of structural plain landforms are:
⮚ The plains of the United States of America
⮚ The central lowlands of Australia
Pair 2 is matched incorrectly:
Depositional Plains:
This type of plain landform is formed from materials deposited by rivers, glaciers, waves and wind. The type of sediment which constitutes this plain landform has a significant impact on the fertility and economic relevance of the consequent plain formed by deposition.
Depositional Plains based on the material deposited by rivers: Alluvial plains
● Alluvial plains are vast, sweeping stretches of plain land that are formed by the deposition of sediments called alluvium.
● An alluvial plain usually includes floodplains as part of its area but extends beyond such plains. An alluvial plain represents the pattern of floodplain shift over geological time. As a river flows down mountains or hills, it carries sediments resulting from erosion and transports the sediments to the lower plain. In this way, floodplains continue growing and adding up to form massive stretches of alluvial plains.
⮚ Example – The Indo-Gangetic Plain in India and the Po Valley in Italy are examples of alluvial plains.
Pair 3 is matched incorrectly:
Erosional plains:
● These are plain landforms that are produced from the action of various agents of denudation on an existing landform.
● These agents of denudation – River, running water, glacier and wind, wear out the rugged surface on an existing landform and smoothens them, giving rise to low undulating plain landforms.
● Two major types of plains result from this mode of formation of plain landforms:
⮚ Peneplains (Almost plain): Which results from the action of the various agents of denudation mentioned above, exempting wind.
⮚ Pediplains: Erosional plains formed from wind action
● Examples of plains in this category include:
⮚ Northern Canada plains
⮚ Ice eroded plains of Western Africa
