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Consider the following statements.
- The mid-oceanic ridge areas have deep-seated earthquake occurrences.
- The ocean crust rocks are much younger than the continental rocks.
- The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.
Which of the above statements is/are correct?
- a)1, 2
- b)2, 3
- c)2 only
- d)1, 2, 3
Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements. The mid-oceanic ridge areas have de...
The correct option is B) 2, 3.
Explanation:
1. The mid-oceanic ridge areas have deep-seated earthquake occurrences:
- This statement is incorrect. The mid-oceanic ridge areas are characterized by shallow earthquakes rather than deep-seated ones. The mid-oceanic ridges are divergent plate boundaries where tectonic plates move away from each other, causing the formation of new oceanic crust. The earthquakes in these areas occur due to the movement of the plates and the associated volcanic activity.
2. The ocean crust rocks are much younger than the continental rocks:
- This statement is correct. The oceanic crust is continuously being formed at the mid-oceanic ridges and is relatively young compared to the continental crust. The oceanic crust is primarily composed of basalt, which is formed from the solidification of magma erupted from underwater volcanoes. In contrast, the continental crust is composed of a variety of rock types and is much older, with some rocks dating back billions of years.
3. The rocks equidistant on either side of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions, and magnetic properties:
- This statement is correct. One of the key pieces of evidence supporting the theory of plate tectonics is the discovery of symmetrical patterns of magnetic anomalies on either side of the mid-oceanic ridges. These anomalies are caused by variations in the Earth's magnetic field recorded in the rocks as they solidify. The rocks on either side of the ridge crest exhibit similar patterns of magnetic properties and age, indicating that they were formed at the same time and have similar chemical compositions.
In summary, statement 2 and 3 are correct. The ocean crust rocks are indeed much younger than the continental rocks, and the rocks equidistant on either side of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions, and magnetic properties.
Explanation:
1. The mid-oceanic ridge areas have deep-seated earthquake occurrences:
- This statement is incorrect. The mid-oceanic ridge areas are characterized by shallow earthquakes rather than deep-seated ones. The mid-oceanic ridges are divergent plate boundaries where tectonic plates move away from each other, causing the formation of new oceanic crust. The earthquakes in these areas occur due to the movement of the plates and the associated volcanic activity.
2. The ocean crust rocks are much younger than the continental rocks:
- This statement is correct. The oceanic crust is continuously being formed at the mid-oceanic ridges and is relatively young compared to the continental crust. The oceanic crust is primarily composed of basalt, which is formed from the solidification of magma erupted from underwater volcanoes. In contrast, the continental crust is composed of a variety of rock types and is much older, with some rocks dating back billions of years.
3. The rocks equidistant on either side of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions, and magnetic properties:
- This statement is correct. One of the key pieces of evidence supporting the theory of plate tectonics is the discovery of symmetrical patterns of magnetic anomalies on either side of the mid-oceanic ridges. These anomalies are caused by variations in the Earth's magnetic field recorded in the rocks as they solidify. The rocks on either side of the ridge crest exhibit similar patterns of magnetic properties and age, indicating that they were formed at the same time and have similar chemical compositions.
In summary, statement 2 and 3 are correct. The ocean crust rocks are indeed much younger than the continental rocks, and the rocks equidistant on either side of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions, and magnetic properties.
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Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 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. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 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. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer?.
Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 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. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 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. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer?.
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Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements. The mid-oceanic ridge areas have deep-seated earthquake occurrences. The ocean crust rocks are much younger than the continental rocks. The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties.Which of the above statements is/are correct?a)1, 2b)2, 3c)2 onlyd)1, 2, 3Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice UPSC tests.
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