{"id":199794,"date":"2025-03-12T15:51:28","date_gmt":"2025-03-12T15:51:28","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=199794"},"modified":"2025-03-12T15:51:30","modified_gmt":"2025-03-12T15:51:30","slug":"list-the-steps-of-the-nebular-theory-of-solar-system-formation","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/12\/list-the-steps-of-the-nebular-theory-of-solar-system-formation\/","title":{"rendered":"List the steps of the nebular theory of Solar System formation"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">List the steps of the nebular theory of Solar System formation<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>planetesimals begin to form in a disk<\/li>\n\n\n\n<li>protoplanetary disk forms<\/li>\n\n\n\n<li>some planetesimals grow into protoplanets by incorporating other solid materials into their orbits<\/li>\n\n\n\n<li>differentiation occurs when a protoplanet has grown to a diameter to at least 400 km<\/li>\n\n\n\n<li>some protoplanets are able to clear orbits of other debris and become planets.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Steps of the Nebular Theory of Solar System Formation<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>A nebula collapses<\/strong> \u2013 A vast cloud of gas and dust (solar nebula) collapses due to gravity, possibly triggered by a nearby supernova or other external forces.<\/li>\n\n\n\n<li><strong>A protostar forms<\/strong> \u2013 The center of the collapsing nebula accumulates mass and heats up, forming a protostar (early Sun).<\/li>\n\n\n\n<li><strong>A protoplanetary disk forms<\/strong> \u2013 Surrounding gas and dust flatten into a rotating disk around the protostar.<\/li>\n\n\n\n<li><strong>Planetesimals begin to form in the disk<\/strong> \u2013 Small solid particles collide and stick together, gradually forming planetesimals (objects a few kilometers in size).<\/li>\n\n\n\n<li><strong>Some planetesimals grow into protoplanets by incorporating other solid materials into their orbits<\/strong> \u2013 Through accretion, some planetesimals continue to grow by gathering nearby dust and smaller objects.<\/li>\n\n\n\n<li><strong>Differentiation occurs when a protoplanet has grown to a diameter of at least 400 km<\/strong> \u2013 The internal structure of the protoplanet starts to differentiate into a core, mantle, and crust as heavy materials sink and lighter materials rise.<\/li>\n\n\n\n<li><strong>Some protoplanets are able to clear orbits of other debris and become planets<\/strong> \u2013 The largest protoplanets continue growing, eventually dominating their orbits and becoming planets.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Nebular Theory<\/strong> explains how the Solar System formed about 4.6 billion years ago from a massive cloud of gas and dust. As this nebula collapsed under gravity, it spun and flattened into a <strong>protoplanetary disk<\/strong>, with the forming Sun at its center. Small dust grains within the disk stuck together, creating <strong>planetesimals<\/strong>, the building blocks of planets. Over time, planetesimals merged to form <strong>protoplanets<\/strong>, growing larger by accreting more material.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When protoplanets reached a diameter of <strong>at least 400 km<\/strong>, internal heat caused differentiation, with heavy elements (like iron and nickel) sinking to form cores while lighter elements formed the crust. The largest protoplanets <strong>cleared their orbits of debris<\/strong>, officially becoming planets. This process led to the formation of the <strong>eight planets<\/strong> we see today, along with moons, asteroids, and other celestial bodies.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>List the steps of the nebular theory of Solar System formation The correct answer and explanation is : Steps of the Nebular Theory of Solar System Formation Explanation The Nebular Theory explains how the Solar System formed about 4.6 billion years ago from a massive cloud of gas and dust. As this nebula collapsed under [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-199794","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=199794"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/199794\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=199794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=199794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=199794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}