{"id":336,"date":"2015-03-02T13:15:44","date_gmt":"2015-03-02T13:15:44","guid":{"rendered":"http:\/\/paksc.org\/pk\/?p=336"},"modified":"2015-03-02T13:15:44","modified_gmt":"2015-03-02T13:15:44","slug":"715-surface-tension-urdu-english","status":"publish","type":"post","link":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/","title":{"rendered":"Needle on the surface of water (Urdu &#038; English)"},"content":{"rendered":"<h1>\u00a0Needle on the surface of water (Urdu &amp; English)<\/h1>\n<p>Using a cardboard or a fork as a carrier, place a needle on the surface of water in a dish. Carefully remove the carrier.<br \/>\nYou will see that: The needle will float.<\/p>\n<p><strong>Explanation<\/strong>: The needle is heavier than the amount of water it displaces and should be expected to sink. It ~oats, however, because of an invisible elastic skin. When water comes in contact with air, the molecules on the surface of the water huddle closer together and form a thin film or skin over the surface. 2. Dip a piece of soap in your dish with the floating needle. You will see that: The needle sinks immediately.<\/p>\n<p><img decoding=\"async\" class=\" aligncenter\" src=\"http:\/\/paksc.org\/pk\/images\/stories\/exp-urdu\/surface%20ten.GIF\" alt=\"\" border=\"0\" \/><\/p>\n<p><strong>Explanation:<\/strong> The soap reduces the surface tension. it is one of the reasons we use soap for cleaning. By lowering surface tension, soap makes water able to wet greasy surfaces.<\/p>\n<p><iframe loading=\"lazy\" style=\"overflow: hidden; border: 0px;\" src=\"http:\/\/playit.pk\/embed\/Tu9o4JXulvo\" width=\"100%\" height=\"370px\" frameborder=\"0\" scrolling=\"NO\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0Needle on the surface of water (Urdu &amp; English) Using a cardboard or a fork as a carrier, place a needle on the surface of water in a dish. Carefully remove the carrier. You will see that: The needle will float. Explanation: The needle is heavier than the amount of water it displaces and should&#8230;<\/p>\n","protected":false},"author":9,"featured_media":337,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[20],"tags":[21],"class_list":["post-336","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-experiments-urdu","tag-class-5th-to-6th"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Needle on the surface of water (Urdu &#038; English) -<\/title>\n<meta name=\"description\" content=\"Needle on the surface of water (Urdu &#038; English) Needle on the surface of water (Urdu &#038; English)\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Needle on the surface of water (Urdu &#038; English) -\" \/>\n<meta name=\"twitter:description\" content=\"Needle on the surface of water (Urdu &#038; English) Needle on the surface of water (Urdu &#038; English)\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg\" \/>\n<meta name=\"twitter:creator\" content=\"@abddulrauf\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Abdul Rauf\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/\"},\"author\":{\"name\":\"Abdul Rauf\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#\\\/schema\\\/person\\\/bf4ee5124d38d2e77d82e679a0bd1c88\"},\"headline\":\"Needle on the surface of water (Urdu &#038; English)\",\"datePublished\":\"2015-03-02T13:15:44+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/\"},\"wordCount\":154,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/paksc.org\\\/pk\\\/wp-content\\\/uploads\\\/2015\\\/03\\\/64cf547a8aac0c429c1de171c29426f0_L.jpg\",\"keywords\":[\"Class 5th to 6th\"],\"articleSection\":[\"Urdu Science Experiments\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/\",\"url\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/\",\"name\":\"Needle on the surface of water (Urdu &#038; English) -\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/paksc.org\\\/pk\\\/wp-content\\\/uploads\\\/2015\\\/03\\\/64cf547a8aac0c429c1de171c29426f0_L.jpg\",\"datePublished\":\"2015-03-02T13:15:44+00:00\",\"description\":\"Needle on the surface of water (Urdu &#038; English) Needle on the surface of water (Urdu &#038; English)\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#primaryimage\",\"url\":\"https:\\\/\\\/paksc.org\\\/pk\\\/wp-content\\\/uploads\\\/2015\\\/03\\\/64cf547a8aac0c429c1de171c29426f0_L.jpg\",\"contentUrl\":\"https:\\\/\\\/paksc.org\\\/pk\\\/wp-content\\\/uploads\\\/2015\\\/03\\\/64cf547a8aac0c429c1de171c29426f0_L.jpg\",\"width\":400,\"height\":426,\"caption\":\"Needle on the surface of water (Urdu & English)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/science-experiments-urdu\\\/715-surface-tension-urdu-english\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/paksc.org\\\/pk\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Needle on the surface of water (Urdu &#038; English)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#website\",\"url\":\"https:\\\/\\\/paksc.org\\\/pk\\\/\",\"name\":\"PSC Do Science\",\"description\":\"STEAM Resources, Science Experiments and Projects by PSC\",\"publisher\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/paksc.org\\\/pk\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#organization\",\"name\":\"Pak Science Club\",\"url\":\"https:\\\/\\\/paksc.org\\\/pk\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/paksc.org\\\/pk\\\/wp-content\\\/uploads\\\/2016\\\/10\\\/Do-science-logo.png?fit=408%2C136&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/paksc.org\\\/pk\\\/wp-content\\\/uploads\\\/2016\\\/10\\\/Do-science-logo.png?fit=408%2C136&ssl=1\",\"width\":408,\"height\":136,\"caption\":\"Pak Science Club\"},\"image\":{\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/paksc.org\\\/pk\\\/#\\\/schema\\\/person\\\/bf4ee5124d38d2e77d82e679a0bd1c88\",\"name\":\"Abdul Rauf\",\"description\":\"Teacher, Innovator, Love to create, explore new ways to view &amp; imagine things and then make them real\",\"sameAs\":[\"https:\\\/\\\/paksc.org\\\/abdul\",\"https:\\\/\\\/www.facebook.com\\\/pk.rauf\",\"https:\\\/\\\/www.Instagram.com\\\/abddulrauf\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/abddulrauf\\\/\",\"https:\\\/\\\/x.com\\\/abddulrauf\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCyR0YwHgdaf0NXjr1sMPUDw\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Needle on the surface of water (Urdu &#038; English) -","description":"Needle on the surface of water (Urdu &#038; English) Needle on the surface of water (Urdu &#038; English)","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:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/","twitter_card":"summary_large_image","twitter_title":"Needle on the surface of water (Urdu &#038; English) -","twitter_description":"Needle on the surface of water (Urdu &#038; English) Needle on the surface of water (Urdu &#038; English)","twitter_image":"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg","twitter_creator":"@abddulrauf","twitter_misc":{"Written by":"Abdul Rauf","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#article","isPartOf":{"@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/"},"author":{"name":"Abdul Rauf","@id":"https:\/\/paksc.org\/pk\/#\/schema\/person\/bf4ee5124d38d2e77d82e679a0bd1c88"},"headline":"Needle on the surface of water (Urdu &#038; English)","datePublished":"2015-03-02T13:15:44+00:00","mainEntityOfPage":{"@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/"},"wordCount":154,"commentCount":0,"publisher":{"@id":"https:\/\/paksc.org\/pk\/#organization"},"image":{"@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#primaryimage"},"thumbnailUrl":"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg","keywords":["Class 5th to 6th"],"articleSection":["Urdu Science Experiments"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/","url":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/","name":"Needle on the surface of water (Urdu &#038; English) -","isPartOf":{"@id":"https:\/\/paksc.org\/pk\/#website"},"primaryImageOfPage":{"@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#primaryimage"},"image":{"@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#primaryimage"},"thumbnailUrl":"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg","datePublished":"2015-03-02T13:15:44+00:00","description":"Needle on the surface of water (Urdu &#038; English) Needle on the surface of water (Urdu &#038; English)","breadcrumb":{"@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#primaryimage","url":"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg","contentUrl":"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg","width":400,"height":426,"caption":"Needle on the surface of water (Urdu & English)"},{"@type":"BreadcrumbList","@id":"https:\/\/paksc.org\/pk\/science-experiments-urdu\/715-surface-tension-urdu-english\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/paksc.org\/pk\/"},{"@type":"ListItem","position":2,"name":"Needle on the surface of water (Urdu &#038; English)"}]},{"@type":"WebSite","@id":"https:\/\/paksc.org\/pk\/#website","url":"https:\/\/paksc.org\/pk\/","name":"PSC Do Science","description":"STEAM Resources, Science Experiments and Projects by PSC","publisher":{"@id":"https:\/\/paksc.org\/pk\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/paksc.org\/pk\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/paksc.org\/pk\/#organization","name":"Pak Science Club","url":"https:\/\/paksc.org\/pk\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/paksc.org\/pk\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/paksc.org\/pk\/wp-content\/uploads\/2016\/10\/Do-science-logo.png?fit=408%2C136&ssl=1","contentUrl":"https:\/\/i0.wp.com\/paksc.org\/pk\/wp-content\/uploads\/2016\/10\/Do-science-logo.png?fit=408%2C136&ssl=1","width":408,"height":136,"caption":"Pak Science Club"},"image":{"@id":"https:\/\/paksc.org\/pk\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/paksc.org\/pk\/#\/schema\/person\/bf4ee5124d38d2e77d82e679a0bd1c88","name":"Abdul Rauf","description":"Teacher, Innovator, Love to create, explore new ways to view &amp; imagine things and then make them real","sameAs":["https:\/\/paksc.org\/abdul","https:\/\/www.facebook.com\/pk.rauf","https:\/\/www.Instagram.com\/abddulrauf","https:\/\/www.linkedin.com\/in\/abddulrauf\/","https:\/\/x.com\/abddulrauf","https:\/\/www.youtube.com\/channel\/UCyR0YwHgdaf0NXjr1sMPUDw"]}]}},"jetpack_featured_media_url":"https:\/\/paksc.org\/pk\/wp-content\/uploads\/2015\/03\/64cf547a8aac0c429c1de171c29426f0_L.jpg","_links":{"self":[{"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/posts\/336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/comments?post=336"}],"version-history":[{"count":0,"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/posts\/336\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/media\/337"}],"wp:attachment":[{"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/media?parent=336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/categories?post=336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/paksc.org\/pk\/wp-json\/wp\/v2\/tags?post=336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}