Plate tectonics
Plate tectonics is a Geography concept from the MPSC syllabus, tested in 6 past MPSC questions across 6 exam years between 2013 and 2025. Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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पुढील क्षेत्रांचा नीट विचार करा : (a) अँडिज पर्वत (b) न्यूझीलंड (c) फिलीपाईन्स (d) तैवान वरीलपैकी कोणता 'अग्नीकंकणाचा' भाग आहे? Consider the following areas : (a) Andese Mountain (b) New Zealand (c) Philippines (d) Taiwan Which of the above form a part of 'Ring of Fire' ?
(a)अँडिज पर्वत / Andese Mountain
(b)न्यूझीलंड / New Zealand
(c)फिलीपाईन्स / Philippines
(d)तैवान / Taiwan
The Pacific Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur, encompassing the Andes, New Zealand, Philippines, and Taiwan.
खालीलपैकी कोणती विधाने सत्य आहेत ? अ. नजिकच्या काळातील संशोधन असे दर्शविते कि भारतीय व आशियाई तबाकांच्या अभिसरणामुळे भूखंड कवचाचे हिमालयीन प्रदेशामध्ये 500 किमी ने संक्षेपण झालेले आहे. ब. हिंद महासागराच्या सागर तळाचा महासागरी कटकापासून विस्तार झालेला दिस्तो. Which of the following statements are true ? a. Recent studies have shown that convergence of the Indian plate and Asian plate has caused a crustal shortening of about 500 km in the Himalayan region. b. There has also been seafloor spreading along the oceanic ridge in the Indian Ocean.
(a)नजिकच्या काळातील संशोधन असे दर्शविते कि भारतीय व आशियाई तबाकांच्या अभिसरणामुळे भूखंड कवचाचे हिमालयीन प्रदेशामध्ये 500 किमी ने संक्षेपण झालेले आहे. / Recent studies have shown that convergence of the Indian plate and Asian plate has caused a crustal shortening of about 500 km in the Himalayan region.
(b)हिंद महासागराच्या सागर तळाचा महासागरी कटकापासून विस्तार झालेला दिस्तो. / There has also been seafloor spreading along the oceanic ridge in the Indian Ocean.
Both statements are correct: convergence of Indian and Asian plates resulted in a crustal shortening of about 500 km in the Himalayas, and seafloor spreading is active along the Indian Ocean ridge.
भूखंडवहन सिद्धांताच्या पुष्टीकरणासाठी कोणते पुरावे आहेत ? योग्य पर्याय निवडा.
(a)जिगसाँ-फिट
(b)भ्रंश मूलक प्रवाह
(c)विविध क्षेत्रातील जीवाश्म
(d)प्रावरणामधील अभिसरण
Alfred Wegener's Continental Drift Theory is supported by evidence such as Jigsaw fit of continents (matching coastlines) and distribution of identical fossils across separate oceans.
पश्चिम पॅसिफिक महासागराच्या किनारवर्ती भागात प्रामुख्याने सागरीगर्ता आढळतात कारण Trenches are found mainly along the coast of the western Pacific Ocean because
Oceanic trenches are formed along convergent plate boundaries (subduction zones) where oceanic crust sinks beneath another plate, prominently seen in the western Pacific margin.
योग्य जोड्या जुळवा. महासागर गर्त a. प्रशांत महासागर i. जावा गर्त b. अटलांटिक महासागर ii. मरियाना गर्त c. हिंदी महासागर iii. युरेशियन गर्त d. आर्क्टिक महासागर iv. पुर्तो रिको गर्त Match the following. Ocean Trench a. Pacific ocean i. Java Trench b. Atlantic ocean ii. Mariana Trench c. Indian ocean iii. Eurasian Trench d. Arctic ocean iv. Puerto Rico Trench
(a)प्रशांत महासागर / Pacific ocean
(b)अटलांटिक महासागर / Atlantic ocean
(c)हिंदी महासागर / Indian ocean
(d)आर्क्टिक महासागर / Arctic ocean
Matching major ocean trenches with their respective oceans: Pacific has Mariana Trench, Atlantic has Puerto Rico Trench, Indian has Java Trench, and Arctic has Eurasian Trench.