Oceanography
Oceanography is a Geography concept from the MPSC syllabus, tested in 7 past MPSC questions across 5 exam years between 2015 and 2023. Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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'त्सुनामी' या जपानी शब्दातील 'त्सु' आणि 'नामी' म्हणजे / The Japanese terms 'tsu' and 'nami' in the word 'Tsunami' mean
In Japanese, 'tsu' means harbor and 'nami' means wave. Together, 'tsunami' translates to harbor wave, which are giant sea waves caused by underwater earthquakes or volcanic eruptions.
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.
जगातील खालील पैकी कोणत्या भागात प्रवाल खडकांची अपवादात्मक परिस्थितीत निर्मिती झालेली आहे? Which of the following are the exceptional occurrences of coral reefs in the world?
(a)लॉर्ड न्होवे बेट / Lord Howe Island
(b)हुटमॅन अॅब्रोलहास / Houtman's Abrolhas
(c)गियानाचे आखात / Gulf of Guinea
(d)सोमालियन किनारा / Somalian coast
Lord Howe Island and Houtman's Abrolhas are well-known examples of high-latitude coral reefs which form under exceptional environmental conditions.
खालील पैकी कोणता घटक प्रवाल किटकांच्या वाढीला कारणीभूत आहे? Which of the following factor is responsible for low coral growth?
Upwelling brings cold, nutrient-rich deep water to the surface, which lowers temperatures and introduces excess nutrients/turbidity that hinder coral growth.
वाढत्या क्षारतेनुसार समुद्रांचा बरोबर क्रम ओळखा. / Identify the correct sequence of the seas on the basis of increasing salinity.
The official MPSC answer key confirms the correct answer is "बाल्टिक समुद्र, अंदमान समुद्र, कॅरिबियन समुद्र, मृत समुद्र / Baltic Sea, Andaman Sea, Caribbean Sea, Dead Sea". This question's original explanation was written against an earlier, since-corrected answer-key reading and has been cleared pending a verified rewrite, rather than leaving it arguing for the wrong option.