{"id":3917,"date":"2023-01-09T10:48:49","date_gmt":"2023-01-09T10:48:49","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3917"},"modified":"2025-12-19T05:41:46","modified_gmt":"2025-12-19T05:41:46","slug":"s-13-c-measurement-of-time","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-13-c-measurement-of-time\/","title":{"rendered":"S-13.c Measurement Of Time"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Measurement of Time<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div style=\"position: relative; width: 100%; height: 0; padding-top: 56.2500%;\n padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden;\n border-radius: 8px; will-change: transform;\">\n  <iframe loading=\"lazy\" style=\"position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;\"\n    src=\"https:\/\/www.canva.com\/design\/DAGAzlqzRUQ\/BHBPo5P34Wjjei34ii-wjg\/watch?embed\" allowfullscreen=\"allowfullscreen\" allow=\"fullscreen\">\n  <\/iframe>\n<\/div>\n<a href=\"https:&#x2F;&#x2F;www.canva.com&#x2F;design&#x2F;DAGAzlqzRUQ&#x2F;BHBPo5P34Wjjei34ii-wjg&#x2F;watch?utm_content=DAGAzlqzRUQ&amp;utm_campaign=designshare&amp;utm_medium=embeds&amp;utm_source=link\" target=\"_blank\" rel=\"noopener\">measurement of time<\/a> by Delta publications\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"360\" height=\"498\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/12\/image-removebg-preview-2023-12-22T113801.748.png\" alt=\"\" class=\"wp-image-10637\" style=\"width:181px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/12\/image-removebg-preview-2023-12-22T113801.748.png 360w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/12\/image-removebg-preview-2023-12-22T113801.748-217x300.png 217w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-c9fb97dba122a90877789b88ee9d1de4\" style=\"color:#000060\"><strong>Definition of Time<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Time is a continuous, irreversible progression from the past, through the present, and into the future.<\/li>\n\n\n\n<li>It helps us organize events in a sequence (before, after, during).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-1996424e5e6e34338a065643bc445866\" style=\"color:#000060\"><strong>Units of Time<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Seconds (s)<\/strong>: The basic unit of time.<\/li>\n\n\n\n<li><strong>Minutes (min)<\/strong>: 1 minute = 60 seconds.<\/li>\n\n\n\n<li><strong>Hours (h)<\/strong>: 1 hour = 60 minutes.<\/li>\n\n\n\n<li><strong>Days (d)<\/strong>: 1 day = 24 hours.<\/li>\n\n\n\n<li><strong>Weeks, months, years<\/strong>: Larger units for measuring longer durations of time.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-da1c680173682c2edac004ffe3a1b306\" style=\"color:#000060\"><strong>Instruments for Measuring Time<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Clocks<\/strong>: Devices that show the current time.<\/li>\n\n\n\n<li><strong>Watches<\/strong>: Smaller portable clocks worn on the wrist.<\/li>\n\n\n\n<li><strong>Calendars<\/strong>: Used to track days, months, and years.<\/li>\n\n\n\n<li><strong>Stopwatches<\/strong>: Used for measuring specific intervals of time, like in sports or experiments.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-e89405fbc12e5645de8742960e4cd118\" style=\"color:#000060\"><strong>Types of Time Measurement<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Standard Time<\/strong>: Time measured based on a specific system like the 24-hour clock.<\/li>\n\n\n\n<li><strong>Sidereal Time<\/strong>: Time based on the Earth&#8217;s rotation relative to distant stars.<\/li>\n\n\n\n<li><strong>Solar Time<\/strong>: Time based on the position of the Sun in the sky.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-a736b26990c7ad1e6fea1b4ce5a957b8\" style=\"color:#000060\"><strong>Reading Clocks<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Analog Clocks<\/strong>: These have hour and minute hands, and sometimes a second hand.\n<ul class=\"wp-block-list\">\n<li>The <strong>hour hand<\/strong> moves slowly.<\/li>\n\n\n\n<li>The <strong>minute hand<\/strong> moves faster.<\/li>\n\n\n\n<li>The <strong>second hand<\/strong> moves continuously.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Digital Clocks<\/strong>: Display the time in numbers (e.g., 3:30 or 15:30).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-827d566061da48218af958dc34e54cae\" style=\"color:#000060\"><strong>Conversions between Time Units<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>1 hour = 60 minutes.<\/li>\n\n\n\n<li>1 minute = 60 seconds.<\/li>\n\n\n\n<li>1 day = 24 hours.<\/li>\n\n\n\n<li>1 week = 7 days.<\/li>\n\n\n\n<li>1 year = 365 days (or 366 days in a leap year).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-b9ff2335cef4abd5c8e8b27e41e0b9f6\" style=\"color:#000060\"><strong>Time Zones<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>The Earth is divided into different time zones based on longitudinal position.<\/li>\n\n\n\n<li>Time is measured differently in different parts of the world due to the Earth\u2019s rotation.<\/li>\n\n\n\n<li>For example, <strong>Greenwich Mean Time (GMT)<\/strong> is the time at the Prime Meridian (0\u00b0 longitude), and other time zones are calculated as hours ahead or behind GMT.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-69165815f2751772104ff3fb9c5d0f96\" style=\"color:#000060\"><strong>Leap Year<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A leap year occurs every four years, adding an extra day (29th February) to the calendar to adjust for the fact that the Earth\u2019s orbit takes approximately 365.25 days.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-0ac410960c5c1274e895925823ec8a78\" style=\"color:#000060\"><strong>Use of Time in Everyday Life<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Time helps us organize our daily activities, schedules, and events.<\/li>\n\n\n\n<li>Time is essential in many fields, including science, sports, business, and travel.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-1c6a66db1f6c9a8d79979cf673529f1d\" style=\"color:#000060\"><strong>Time in Science<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Speed<\/strong>: Speed is calculated by the formula: <strong>Speed = Distance \/ Time<\/strong>.<\/li>\n\n\n\n<li><strong>Time Measurement in Experiments<\/strong>: Time is often measured accurately in scientific experiments to observe changes or processes.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/82404\/385\/760\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-61.png\" alt=\"\" class=\"wp-image-6028\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-61.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-61-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-61-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-61-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81672\/675\/761\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-56.png\" alt=\"\" class=\"wp-image-6030\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-56.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-56-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-56-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-56-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Measurement of Time measurement of time by Delta publications Key Notes : Definition of Time Units of Time Instruments for Measuring Time Types of Time Measurement Reading Clocks Conversions between Time Units Time Zones Leap Year Use of Time in Everyday Life Time in Science Let&#8217;s practice!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-3917","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3917"}],"version-history":[{"count":17,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3917\/revisions"}],"predecessor-version":[{"id":17676,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3917\/revisions\/17676"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}