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Consider the following statements regarding the impact of climate change on Earth's rotational dynamics:
1. The melting of polar ice sheets leads to water flowing towards the equator, which increases the Earth's oblateness and moment of inertia.
2. A slowdown in Earth's rotation may require additional leap seconds, affecting systems that depend on precise timekeeping.
3. Melting polar ice does not affect the Earth's axis of rotation.
Which of the statements given above is/are correct?
  • a)
    1 Only
  • b)
    1 and 2 Only
  • c)
    1 and 3 Only
  • d)
    1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements regarding the impact of climate cha...
Statement 1: The melting of polar ice sheets indeed leads to water flowing towards the equator. This redistribution of mass increases the Earth's oblateness (flattening at the poles) and moment of inertia (resistance to rotational change). This change in mass distribution causes the Earth's rotational speed to decrease to conserve angular momentum. Therefore, statement 1 is correct.
Statement 2: As Earth's rotation slows down, the discrepancy between atomic time (measured by highly precise atomic clocks) and solar time (based on the Earth's rotation) increases. To maintain synchronization, additional leap seconds may be required. Systems relying on precise timekeeping, such as GPS and network timestamps, could be affected by these adjustments. Hence, statement 2 is correct.
Statement 3: Melting polar ice affects the Earth's axis of rotation, leading to slight but measurable shifts. This phenomenon, known as the Chandler wobble, can influence rotational timing and stability. Therefore, statement 3 is incorrect.
Thus, the correct statements are 1 and 2.
Answer: Option B: 1 and 2 Only
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Consider the following statements regarding the impact of climate change on Earth's rotational dynamics:1. The melting of polar ice sheets leads to water flowing towards the equator, which increases the Earth's oblateness and moment of inertia.2. A slowdown in Earth's rotation may require additional leap seconds, affecting systems that depend on precise timekeeping.3. Melting polar ice does not affect the Earth's axis of rotation.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)1 and 3 Onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements regarding the impact of climate change on Earth's rotational dynamics:1. The melting of polar ice sheets leads to water flowing towards the equator, which increases the Earth's oblateness and moment of inertia.2. A slowdown in Earth's rotation may require additional leap seconds, affecting systems that depend on precise timekeeping.3. Melting polar ice does not affect the Earth's axis of rotation.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)1 and 3 Onlyd)1, 2 and 3Correct answer is option 'B'. 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 Consider the following statements regarding the impact of climate change on Earth's rotational dynamics:1. The melting of polar ice sheets leads to water flowing towards the equator, which increases the Earth's oblateness and moment of inertia.2. A slowdown in Earth's rotation may require additional leap seconds, affecting systems that depend on precise timekeeping.3. Melting polar ice does not affect the Earth's axis of rotation.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)1 and 3 Onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements regarding the impact of climate change on Earth's rotational dynamics:1. The melting of polar ice sheets leads to water flowing towards the equator, which increases the Earth's oblateness and moment of inertia.2. A slowdown in Earth's rotation may require additional leap seconds, affecting systems that depend on precise timekeeping.3. Melting polar ice does not affect the Earth's axis of rotation.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)1 and 3 Onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?.
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