{"id":1042,"date":"2015-11-27T17:35:14","date_gmt":"2015-11-27T17:35:14","guid":{"rendered":"http:\/\/www.punjabexamportal.com\/11052024\/?p=1042"},"modified":"2016-03-08T07:27:55","modified_gmt":"2016-03-08T07:27:55","slug":"the-structure-of-the-earth","status":"publish","type":"post","link":"https:\/\/www.punjabexamportal.com\/11052024\/2015\/11\/27\/the-structure-of-the-earth\/","title":{"rendered":"The structure of the Earth"},"content":{"rendered":"<h3>The Earth is made up of four distinct layers:<\/h3>\n<p><em>1. <\/em><em>The inner core (hottest part of the Earth)<\/em> &#8211; \u00e0\u00a8\u2021\u00e0\u00a8\u00b9\u00e0\u00a9\u2021 \u00e0\u00a8\u00a7\u00e0\u00a8\u00b0\u00e0\u00a8\u00a4\u00e0\u00a9\u20ac \u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b8\u00e0\u00a8\u00ac \u00e0\u00a8\u00a4\u00e0\u00a9\u2039\u00e0\u00a8\u201a \u00e0\u00a8\u2026\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a8\u00b0\u00e0\u00a8\u00b2\u00e0\u00a8\u00be \u00e0\u00a8\u2026\u00e0\u00a9\u00b1\u00e0\u00a8\u00a4\u00e0\u00a9\u2021 \u00e0\u00a8\u00b8\u00e0\u00a8\u00ac \u00e0\u00a8\u00a4\u00e0\u00a9\u2039\u00e0\u00a8\u201a \u00e0\u00a8\u2014\u00e0\u00a8\u00b0\u00e0\u00a8\u00ae \u00e0\u00a8\u00b9\u00e0\u00a8\u00bf\u00e0\u00a9\u00b1\u00e0\u00a8\u00b8\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6. \u00e0\u00a8\u2021\u00e0\u00a8\u00b9 \u00e0\u00a8\u00a0\u00e0\u00a9\u2039\u00e0\u00a8\u00b8 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6 \u00e0\u00a8\u2026\u00e0\u00a9\u00b1\u00e0\u00a8\u00a4\u00e0\u00a9\u2021 \u00e0\u00a8\u2021\u00e0\u00a8\u00b9 <em>iron<\/em> \u00e0\u00a8\u00a4\u00e0\u00a9\u2021 <em>nickel<\/em> \u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00ac\u00e0\u00a8\u00a3\u00e0\u00a8\u00bf\u00e0\u00a8\u2020 \u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6. <em>5,500\u00c2\u00b0C<\/em> \u00e0\u00a8\u00a4\u00e0\u00a8\u00be\u00e0\u00a8\u00aa\u00e0\u00a8\u00ae\u00e0\u00a8\u00be\u00e0\u00a8\u00a8 \u00e0\u00a8\u2022\u00e0\u00a8\u00b0\u00e0\u00a8\u2022\u00e0\u00a9\u2021 \u00e0\u00a8\u2021\u00e0\u00a8\u00a5\u00e0\u00a9\u2021 \u00e0\u00a8\u00ac\u00e0\u00a9\u2021\u00e0\u00a8\u2026\u00e0\u00a9\u00b0\u00e0\u00a8\u00a4 \u00e0\u00a8\u2014\u00e0\u00a8\u00b0\u00e0\u00a8\u00ae\u00e0\u00a9\u20ac \u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6.<\/p>\n<p><em>2.\u00c2\u00a0<\/em><em>The outer core<\/em> &#8211; \u00e0\u00a8\u2021\u00e0\u00a8\u00b9\u00e0\u00a9\u2021 <em>inner core<\/em> \u00e0\u00a8\u00a6\u00e0\u00a9\u2021 \u00e0\u00a8\u2020\u00e0\u00a8\u00b2\u00e0\u00a9\u2021 \u00e0\u00a8\u00a6\u00e0\u00a9\u0081\u00e0\u00a8\u2020\u00e0\u00a8\u00b2\u00e0\u00a9\u2021 \u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u00aa\u00e0\u00a8\u00b0\u00e0\u00a8\u00a4 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6 . \u00e0\u00a8\u2021\u00e0\u00a8\u00b9 \u00e0\u00a8\u00b5\u00e0\u00a9\u20ac <em>iron<\/em> \u00e0\u00a8\u00a4\u00e0\u00a9\u2021 <em>nickel<\/em> \u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00ac\u00e0\u00a8\u00a3\u00e0\u00a8\u00bf\u00e0\u00a8\u2020 \u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6, \u00e0\u00a8\u00aa\u00e0\u00a8\u00b0 \u00e0\u00a8\u2021\u00e0\u00a8\u00b9 \u00e0\u00a8\u2021\u00e0\u00a8\u2022 \u00e0\u00a8\u00a4\u00e0\u00a8\u00b0\u00e0\u00a8\u00b2 \u00e0\u00a8\u00b2\u00e0\u00a9\u2021\u00e0\u00a8\u2026\u00e0\u00a8\u00b0 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6. \u00e0\u00a8\u2021\u00e0\u00a8\u00b8 \u00e0\u00a8\u00b2\u00e0\u00a9\u2021\u00e0\u00a8\u2026\u00e0\u00a8\u00b0 \u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00a4\u00e0\u00a8\u00be\u00e0\u00a8\u00aa\u00e0\u00a8\u00ae\u00e0\u00a8\u00be\u00e0\u00a8\u00a8 \u00e0\u00a8\u00b5\u00e0\u00a9\u20ac inner core \u00e0\u00a8\u00b5\u00e0\u00a8\u00be\u00e0\u00a8\u201a\u00e0\u00a8\u2014 \u00e0\u00a8\u00ac\u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a8\u00a4 \u00e0\u00a8\u00b9\u00e0\u00a9\u20ac \u00e0\u00a8\u0153\u00e0\u00a8\u00bf\u00e0\u00a8\u2020\u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6.<\/p>\n<p><em>3. The mantle<\/em> &#8211; \u00e0\u00a8\u2021\u00e0\u00a8\u00b9\u00e0\u00a9\u2021 \u00e0\u00a8\u00a7\u00e0\u00a8\u00b0\u00e0\u00a8\u00a4\u00e0\u00a9\u20ac \u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b8\u00e0\u00a8\u00ac \u00e0\u00a8\u00a4\u00e0\u00a9\u2039\u00e0\u00a8\u201a \u00e0\u00a8\u0161\u00e0\u00a9\u0152\u00e0\u00a9\u0153\u00e0\u00a8\u00be \u00e0\u00a8\u00ad\u00e0\u00a8\u00be\u00e0\u00a8\u2014 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6. \u00e0\u00a8\u2021\u00e0\u00a8\u00b8 \u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u0161\u00e0\u00a9\u0152\u00e0\u00a9\u0153\u00e0\u00a8\u00be\u00e0\u00a8\u02c6 \u00e0\u00a8\u00b2\u00e0\u00a8\u2014\u00e0\u00a8\u00ad\u00e0\u00a8\u2014<em> <em>2,900 km<\/em> <\/em>\u00e0\u00a8\u00b9\u00e0\u00a9\u02c6. <em>Mantle<\/em> \u00e0\u00a8\u00b2\u00e0\u00a9\u2021\u00e0\u00a8\u2026\u00e0\u00a8\u00b0 &#8216;<em><em>semi-molten rock<\/em>&#8216;<\/em> \u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u00ac\u00e0\u00a8\u00a3\u00e0\u00a9\u20ac \u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6 \u00e0\u00a8\u0153\u00e0\u00a8\u00bf\u00e0\u00a8\u00b8 \u00e0\u00a8\u00a8\u00e0\u00a9\u201a &#8216;<em>magma<\/em>&#8216; \u00e0\u00a8\u2022\u00e0\u00a8\u00bf\u00e0\u00a8\u00b9\u00e0\u00a8\u00be \u00e0\u00a8\u0153\u00e0\u00a8\u00be\u00e0\u00a8\u201a\u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6.<em> <em>Mantle<\/em> <\/em>\u00e0\u00a8\u00b2\u00e0\u00a9\u2021\u00e0\u00a8\u2026\u00e0\u00a8\u00b0 \u00e0\u00a8\u00a6\u00e0\u00a9\u2021 \u00e0\u00a8\u2030\u00e0\u00a9\u00b1\u00e0\u00a8\u00aa\u00e0\u00a8\u00b0\u00e0\u00a8\u00b2\u00e0\u00a9\u2021 \u00e0\u00a8\u00b9\u00e0\u00a8\u00bf\u00e0\u00a9\u00b1\u00e0\u00a8\u00b8\u00e0\u00a9\u2021 \u00e0\u00a8\u00b5\u00e0\u00a8\u00bf\u00e0\u00a9\u00b1\u00e0\u00a8\u0161 \u00e0\u00a8\u0161\u00e0\u00a9\u00b1\u00e0\u00a8\u0178\u00e0\u00a8\u00be\u00e0\u00a8\u00a8 \u00e0\u00a8\u00b9\u00e0\u00a8\u00be\u00e0\u00a8\u00b0\u00e0\u00a8\u00a1 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6, \u00e0\u00a8\u00aa\u00e0\u00a8\u00b0 \u00e0\u00a8\u00a8\u00e0\u00a8\u00bf\u00e0\u00a8\u0161\u00e0\u00a8\u00b2\u00e0\u00a9\u2021 \u00e0\u00a8\u00b9\u00e0\u00a8\u00bf\u00e0\u00a9\u00b1\u00e0\u00a8\u00b8\u00e0\u00a9\u2021 \u00e0\u00a8\u00b5\u00e0\u00a8\u00bf\u00e0\u00a9\u00b1\u00e0\u00a8\u0161 \u00e0\u00a8\u0161\u00e0\u00a9\u00b1\u00e0\u00a8\u0178\u00e0\u00a8\u00be\u00e0\u00a8\u00a8 \u00e0\u00a8\u00a8\u00e0\u00a8\u00b0\u00e0\u00a8\u00ae \u00e0\u00a8\u00b9\u00e0\u00a9\u0081\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6 \u00e0\u00a8\u0153\u00e0\u00a8\u00bf\u00e0\u00a8\u00b8 \u00e0\u00a8\u2022\u00e0\u00a8\u00b0\u00e0\u00a8\u2022\u00e0\u00a9\u2021 \u00e0\u00a8\u2021\u00e0\u00a8\u00b9\u00e0\u00a9\u2021 \u00e0\u00a8\u00ad\u00e0\u00a8\u00be\u00e0\u00a8\u2014 \u00e0\u00a8\u00aa\u00e0\u00a8\u00bf\u00e0\u00a8\u02dc\u00e0\u00a8\u00b2\u00e0\u00a8\u00a8\u00e0\u00a8\u00be \u00e0\u00a8\u00b8\u00e0\u00a9\u0081\u00e0\u00a8\u00b0\u00e0\u00a9\u201a \u00e0\u00a8\u2022\u00e0\u00a8\u00b0 \u00e0\u00a8\u00a6\u00e0\u00a8\u00bf\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a8\u00be \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6.<\/p>\n<p><em>4.\u00c2\u00a0The crust<\/em> &#8211; \u00e0\u00a8\u2021\u00e0\u00a8\u00b9\u00e0\u00a9\u2021 \u00e0\u00a8\u00a7\u00e0\u00a8\u00b0\u00e0\u00a8\u00a4\u00e0\u00a9\u20ac \u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u00ac\u00e0\u00a8\u00be\u00e0\u00a8\u00b9\u00e0\u00a8\u00b0\u00e0\u00a9\u20ac \u00e0\u00a8\u00aa\u00e0\u00a8\u00b0\u00e0\u00a8\u00a4 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6 .<em> <em>Crust<\/em> &#8216;solid rock<\/em>&#8216; \u00e0\u00a8\u00b2\u00e0\u00a9\u2021\u00e0\u00a8\u2026\u00e0\u00a8\u00b0 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6 \u00e0\u00a8\u0153\u00e0\u00a8\u00bf\u00e0\u00a8\u00b8 \u00e0\u00a8\u2030\u00e0\u00a9\u00b1\u00e0\u00a8\u00a4\u00e0\u00a9\u2021 \u00e0\u00a8\u2026\u00e0\u00a9\u00b1\u00e0\u00a8\u00b8\u00e0\u00a9\u20ac \u00e0\u00a8\u00b0\u00e0\u00a8\u00b9\u00e0\u00a8\u00bf\u00e0\u00a9\u00b0\u00e0\u00a8\u00a6\u00e0\u00a9\u2021 \u00e0\u00a8\u00b9\u00e0\u00a8\u00be\u00e0\u00a8\u201a. \u00e0\u00a8\u2021\u00e0\u00a8\u00b8 \u00e0\u00a8\u00a6\u00e0\u00a9\u20ac \u00e0\u00a8\u0161\u00e0\u00a9\u0152\u00e0\u00a9\u0153\u00e0\u00a8\u00be\u00e0\u00a8\u02c6 \u00e0\u00a8\u00b2\u00e0\u00a8\u2014\u00e0\u00a8\u00ad\u00e0\u00a8\u2014<em> <em>0-100 km <\/em><\/em>\u00e0\u00a8\u00a4\u00e0\u00a8\u2022 \u00e0\u00a8\u00b9\u00e0\u00a9\u02c6.<\/p>\n<h3>Other Important points about crust layer<\/h3>\n<ul>\n<li>Crust is about <em>35km deep on the continental masses<\/em> and only <em>5km on the ocean floors.<\/em><\/li>\n<li>Mineral found in continental crust are <em>silica<\/em> and <em>alumina<\/em>.<\/li>\n<li>Mineral found in oceanic crust are <em>silica<\/em> and <em>magnesium<\/em><\/li>\n<li>crust is <em>thinnest layer<\/em> of earth<\/li>\n<\/ul>\n<h3>Related MCQs<\/h3>\n<p><strong>Q-1 The outer layer of Earth is known as<\/strong><br \/>\na) The outer core<br \/>\nb) The inner core<br \/>\nc) The Mantle<br \/>\n<em>4) The Crust<\/em><\/p>\n<p><strong>Q-2 The most widest section of the earth is known as<\/strong><br \/>\na) The outer core<br \/>\nb) The inner core<br \/>\n<em>c) The Mantle<\/em><br \/>\n4) The Crust<\/p>\n<p><strong>Q-3 The plates of Earth move apart from each other due to<\/strong><br \/>\na) conventional currents<br \/>\nb) compression currents<br \/>\nc) constructive currents<br \/>\n<em>d) convection currents<\/em><\/p>\n<p><strong>Q-4 The central and hottest part of the Earth is called<\/strong><br \/>\na) The outer core<br \/>\n<em>b) The inner core<\/em><br \/>\nc) The Mantle<br \/>\n4) The Crust<\/p>\n<p><strong>Q-5 The inner core of the earth is made mostly of<\/strong><br \/>\na). oxygen &amp; silicon<br \/>\nb). iron &amp; silicon<br \/>\n<em>c). iron &amp; nickel<\/em><br \/>\nd). copper &amp; nickel<\/p>\n<p><strong>Q-6 Thinnest layer of the Earth<\/strong><br \/>\na) The outer core<br \/>\nb) The inner core<br \/>\nc) The Mantle<br \/>\n<em>4) The Crust<\/em><\/p>\n<p><strong>Q-7 Which layer is made up of liquid iron?<\/strong><br \/>\n<em>a) The outer core<\/em><br \/>\nb) The inner core<br \/>\nc) The Mantle<br \/>\n4) The Crust<\/p>\n<p><strong>Q-8 About 80 % of Earth&#8217;s volume is found in this layer.<\/strong><br \/>\na) The outer core<br \/>\nb) The inner core<br \/>\n<em>c) The Mantle<\/em><br \/>\n4) The Crust<\/p>\n<p><strong>Q-9 What is the heat source for convection currents?<\/strong><br \/>\na) The outer core<br \/>\n<em>b) The inner core<\/em><br \/>\nc) The Mantle<br \/>\n4) The Crust<\/p>\n<p><strong>Q-10 All of the following elements are commonly found in Earth\u00e2\u20ac\u2122s crust EXCEPT<\/strong><br \/>\na) silicon<br \/>\nb) oxygen<br \/>\nc) iron<br \/>\n<em>d) calcium<\/em><\/p>\n<p><strong>Q-11 Complete this sentence: As you go deeper inside the Earth ____________________.<\/strong><br \/>\na) the temperature stays the same, but the pressure increases<br \/>\n<em>b) it gets hotter, materials get denser and pressure increases<\/em><br \/>\nc) the temperature increases, but the pressure decreases<br \/>\nd) it gets cooler, drier, and easier to travel<\/p>\n<p><strong>Q-12 What are the two main types of crust?<\/strong><br \/>\n<em>a) continental and oceanic<\/em><br \/>\nb) solid and liquid<br \/>\nc) lithosphere and asthenosphere<br \/>\nd) thick and thin<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Earth is made up of four distinct layers: 1. The inner core (hottest part..<\/p>\n","protected":false},"author":1,"featured_media":1372,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,9,8,7,1,10],"tags":[],"class_list":["post-1042","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-notes","category-patwari","category-pspcl","category-pstet","category-punjab-exam-portal","category-punjab-gk"],"_links":{"self":[{"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/posts\/1042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/comments?post=1042"}],"version-history":[{"count":0,"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/posts\/1042\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/media\/1372"}],"wp:attachment":[{"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/media?parent=1042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/categories?post=1042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.punjabexamportal.com\/11052024\/wp-json\/wp\/v2\/tags?post=1042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}