{"id":1145,"date":"2023-06-22T14:00:45","date_gmt":"2023-06-22T08:30:45","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=1145"},"modified":"2024-04-03T07:01:26","modified_gmt":"2024-04-03T01:31:26","slug":"q-variations-in-the-length-of-daytime-and-nighttime-from-season-to-season-are-due-to","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-variations-in-the-length-of-daytime-and-nighttime-from-season-to-season-are-due-to","title":{"rendered":"Q. Variations in the length of daytime and nighttime from season to season are due to"},"content":{"rendered":"\n<ul class=\"mcq wp-block-list\">\n<li>The earth\u2019s rotation on its axis<\/li>\n\n\n\n<li>The earth\u2019s revolution round the sun in an elliptical manner<\/li>\n\n\n\n<li>Latitudinal position of the place<\/li>\n\n\n\n<li>Revolution of the earth on a titled axis<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer: (d) Revolution of the earth on a titled axis<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Notes:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The number of hours of daylight, i.e. day length, on any particular day of the year&nbsp;<strong>differs from place to place<\/strong>.<\/li>\n\n\n\n<li>If we take two locations on the Earth, Earth\u2019s equator and North Pole, then we can find that&nbsp;<strong>equator only receives about 12 hours of light each day<\/strong>, whereas the&nbsp;<strong>north pole receives 24 hours of daylight for a few months in the summer and then total darkness in the winter months<\/strong>.<\/li>\n\n\n\n<li>As we know, day and night are the&nbsp;<strong>consequence of the earth\u2019s rotation on its axis<\/strong>. But, the&nbsp;<strong>axis is tilted 23.5 degrees<\/strong>.<\/li>\n\n\n\n<li>Due to this reason, during the&nbsp;<strong>earth\u2019s revolution around the sun<\/strong>,&nbsp;<strong>polar regions spend long periods pointed towards the sun in the summers&nbsp;<\/strong>and long periods pointed away from the sun during winters.<\/li>\n\n\n\n<li><strong>Days of constant darkness or light occurs at latitudes greater than 66.5 degrees, the regions above the Arctic and the Antarctic<\/strong>.<\/li>\n\n\n\n<li>The&nbsp;<strong><a href=\"https:\/\/lotusarise.com\/motions-of-the-earth\/\">summer solstice<\/a><\/strong>&nbsp;or the&nbsp;<strong>longest day of the year<\/strong>&nbsp;in the Northern Hemisphere is the day when earth\u2019s north pole is tilting 23.5 degrees towards the sun.<\/li>\n\n\n\n<li>Similarly, the&nbsp;<strong>winter solstice<\/strong>, or the&nbsp;<strong>shortest day of the year<\/strong>&nbsp;in the Northern Hemisphere is the day when the earth\u2019s north pole is&nbsp;tilting 23.5 degrees away from the sun and the south pole is&nbsp; tilted towards&nbsp;the sun.&nbsp;<\/li>\n\n\n\n<li>The&nbsp;<strong>spring equinox and the autumn equinox<\/strong>&nbsp;are the only two times of the year when the earth\u2019s axis is neither towards nor away from the sun. This results in&nbsp;<strong>equal duration of the day and night<\/strong>.<\/li>\n\n\n\n<li>Thus, we find that variations in the length of daytime and nighttime from season to season are due to the&nbsp;<strong>revolution of the earth on a tilted axis.<\/strong><\/li>\n<\/ul>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-_64f8cf-e8 .kt-block-spacer{height:40px;}.wp-block-kadence-spacer.kt-block-spacer-_64f8cf-e8 .kt-divider{border-top-width:2px;border-top-color:#eee;width:100%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-_64f8cf-e8\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Answer: (d) Revolution of the earth on a titled axis Notes:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_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":[1,3],"tags":[37],"years":[60],"class_list":["post-1145","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-geography","years-60"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":37,"label":"Geography"}],"years":[{"value":60,"label":"2013"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":37,"name":"Geography","slug":"geography","term_group":0,"term_taxonomy_id":37,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1145","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=1145"}],"version-history":[{"count":1,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1145\/revisions"}],"predecessor-version":[{"id":1162,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1145\/revisions\/1162"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=1145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=1145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=1145"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=1145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}