{"id":88095,"date":"2025-06-01T07:01:27","date_gmt":"2025-06-01T07:01:27","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88095"},"modified":"2025-06-01T07:01:27","modified_gmt":"2025-06-01T07:01:27","slug":"which-of-the-following-statements-regarding-earths-internal-structure","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/","title":{"rendered":"Which of the following statements regarding Earth\u2019s internal structure"},"content":{"rendered":"

Which of the following statements regarding Earth\u2019s internal structure is\/are correct?
\n1. The oceanic crust is heavier than the continental crust.
\n2. Most of the Earth\u2019s internal heat is contained within the mantle.
\n3. Large convective cells in the crust circulate heat and drive plate-tectonic processes.<\/p>\n

[amp_mcq option1=”3 only” option2=”1 and 2 only” option3=”2 and 3 only” option4=”1, 2 and 3″ correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2024<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nStatements 1 and 2 are correct, while statement 3 is incorrect.
\n<\/section>\n
\nStatement 1 is correct. Oceanic crust, primarily composed of basalt, has a higher density (about 3.0 g\/cm\u00b3) than continental crust, which is mainly granitic in composition (density around 2.7 g\/cm\u00b3). This difference in density explains why oceanic plates subduct beneath continental plates. Statement 2 is correct. While the Earth’s core is hotter, the mantle, being the largest layer by volume (about 84% of Earth’s volume), contains a significant portion of the Earth’s internal heat, generated from primordial heat and radioactive decay. This heat drives convection within the mantle. Statement 3 is incorrect. Large convective cells responsible for driving plate tectonics are located within the Earth’s *mantle*, not the crust. The crust is the rigid outer shell that is broken into tectonic plates, which move atop the convecting mantle.
\n<\/section>\n
\nThe Earth’s internal structure consists of the crust, mantle, outer core (liquid), and inner core (solid). Temperature increases with depth, but the state of matter depends on pressure and composition as well.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which of the following statements regarding Earth\u2019s internal structure is\/are correct? 1. The oceanic crust is heavier than the continental crust. 2. Most of the Earth\u2019s internal heat is contained within the mantle. 3. Large convective cells in the crust circulate heat and drive plate-tectonic processes. [amp_mcq option1=”3 only” option2=”1 and 2 only” option3=”2 and … <\/p>\n

Detailed SolutionWhich of the following statements regarding Earth\u2019s internal structure<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1093],"tags":[1103,1144,1106],"class_list":["post-88095","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1103","tag-rocks-and-earth-sciences","tag-world-and-physical-geography","no-featured-image-padding"],"yoast_head":"\nWhich of the following statements regarding Earth\u2019s internal structure<\/title>\n<meta name=\"description\" content=\"Statements 1 and 2 are correct, while statement 3 is incorrect. Statement 1 is correct. Oceanic crust, primarily composed of basalt, has a higher density (about 3.0 g\/cm\u00b3) than continental crust, which is mainly granitic in composition (density around 2.7 g\/cm\u00b3). This difference in density explains why oceanic plates subduct beneath continental plates. Statement 2 is correct. While the Earth's core is hotter, the mantle, being the largest layer by volume (about 84% of Earth's volume), contains a significant portion of the Earth's internal heat, generated from primordial heat and radioactive decay. This heat drives convection within the mantle. Statement 3 is incorrect. Large convective cells responsible for driving plate tectonics are located within the Earth's *mantle*, not the crust. The crust is the rigid outer shell that is broken into tectonic plates, which move atop the convecting mantle.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following statements regarding Earth\u2019s internal structure\" \/>\n<meta property=\"og:description\" content=\"Statements 1 and 2 are correct, while statement 3 is incorrect. Statement 1 is correct. Oceanic crust, primarily composed of basalt, has a higher density (about 3.0 g\/cm\u00b3) than continental crust, which is mainly granitic in composition (density around 2.7 g\/cm\u00b3). This difference in density explains why oceanic plates subduct beneath continental plates. Statement 2 is correct. While the Earth's core is hotter, the mantle, being the largest layer by volume (about 84% of Earth's volume), contains a significant portion of the Earth's internal heat, generated from primordial heat and radioactive decay. This heat drives convection within the mantle. Statement 3 is incorrect. Large convective cells responsible for driving plate tectonics are located within the Earth's *mantle*, not the crust. The crust is the rigid outer shell that is broken into tectonic plates, which move atop the convecting mantle.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:01:27+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which of the following statements regarding Earth\u2019s internal structure","description":"Statements 1 and 2 are correct, while statement 3 is incorrect. Statement 1 is correct. Oceanic crust, primarily composed of basalt, has a higher density (about 3.0 g\/cm\u00b3) than continental crust, which is mainly granitic in composition (density around 2.7 g\/cm\u00b3). This difference in density explains why oceanic plates subduct beneath continental plates. Statement 2 is correct. While the Earth's core is hotter, the mantle, being the largest layer by volume (about 84% of Earth's volume), contains a significant portion of the Earth's internal heat, generated from primordial heat and radioactive decay. This heat drives convection within the mantle. Statement 3 is incorrect. Large convective cells responsible for driving plate tectonics are located within the Earth's *mantle*, not the crust. The crust is the rigid outer shell that is broken into tectonic plates, which move atop the convecting mantle.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following statements regarding Earth\u2019s internal structure","og_description":"Statements 1 and 2 are correct, while statement 3 is incorrect. Statement 1 is correct. Oceanic crust, primarily composed of basalt, has a higher density (about 3.0 g\/cm\u00b3) than continental crust, which is mainly granitic in composition (density around 2.7 g\/cm\u00b3). This difference in density explains why oceanic plates subduct beneath continental plates. Statement 2 is correct. While the Earth's core is hotter, the mantle, being the largest layer by volume (about 84% of Earth's volume), contains a significant portion of the Earth's internal heat, generated from primordial heat and radioactive decay. This heat drives convection within the mantle. Statement 3 is incorrect. Large convective cells responsible for driving plate tectonics are located within the Earth's *mantle*, not the crust. The crust is the rigid outer shell that is broken into tectonic plates, which move atop the convecting mantle.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:01:27+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/","name":"Which of the following statements regarding Earth\u2019s internal structure","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:01:27+00:00","dateModified":"2025-06-01T07:01:27+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statements 1 and 2 are correct, while statement 3 is incorrect. Statement 1 is correct. Oceanic crust, primarily composed of basalt, has a higher density (about 3.0 g\/cm\u00b3) than continental crust, which is mainly granitic in composition (density around 2.7 g\/cm\u00b3). This difference in density explains why oceanic plates subduct beneath continental plates. Statement 2 is correct. While the Earth's core is hotter, the mantle, being the largest layer by volume (about 84% of Earth's volume), contains a significant portion of the Earth's internal heat, generated from primordial heat and radioactive decay. This heat drives convection within the mantle. Statement 3 is incorrect. Large convective cells responsible for driving plate tectonics are located within the Earth's *mantle*, not the crust. The crust is the rigid outer shell that is broken into tectonic plates, which move atop the convecting mantle.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-statements-regarding-earths-internal-structure\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC NDA-1","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-nda-1\/"},{"@type":"ListItem","position":3,"name":"Which of the following statements regarding Earth\u2019s internal structure"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88095","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=88095"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/88095\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=88095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=88095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=88095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}