{"id":4394,"date":"2022-12-13T06:52:59","date_gmt":"2022-12-13T06:52:59","guid":{"rendered":"https:\/\/3rdclass.deltapublications.in\/?page_id=4394"},"modified":"2025-04-09T10:20:21","modified_gmt":"2025-04-09T10:20:21","slug":"s-15-d-sound","status":"publish","type":"page","link":"https:\/\/3rdclass.deltapublications.in\/index.php\/s-15-d-sound\/","title":{"rendered":"s-15.d Sound"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Sound<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/12\/sound-1.mp4\"><\/video><\/figure>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"477\" height=\"400\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-136.png\" alt=\"\" class=\"wp-image-11620\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-136.png 477w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-136-300x252.png 300w\" sizes=\"auto, (max-width: 477px) 100vw, 477px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-4d4696560822e7cb72ec4be90d4370b1\" style=\"color:#74008b\">Key Notes:<\/p>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-78b7a7b952680399c22af3432e6cee21\" style=\"color:#000060\"><strong>What is Sound?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Sound is something we <strong>hear<\/strong>.<\/li>\n\n\n\n<li>It is a form of <strong>energy<\/strong> that travels in waves.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-847eb0bf1b57107bbe56c45aa616a585\" style=\"color:#000060\"><strong>How is Sound Made?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Sound is made when <strong>something vibrates<\/strong> (shakes back and forth).<\/li>\n\n\n\n<li>These vibrations move through the air and reach our ears.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-5e59799a4df926f7f20d4b19e65225d1\" style=\"color:#000060\"><strong>Sources of Sound<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Things that make sound are called <strong>sound sources<\/strong>.<\/li>\n\n\n\n<li>Examples: <strong>Drums, bells, people talking, animals, machines.<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-8dd2b8eb883ddeb7fac3736fe52cb57b\" style=\"color:#000060\"><strong>How Does Sound Travel?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Sound travels through <strong>air<\/strong>, <strong>water<\/strong>, and <strong>solid materials<\/strong>.<\/li>\n\n\n\n<li>It cannot travel through <strong>a vacuum<\/strong> (where there is no air).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-b69e5f7b7b969eddf0ecf73a1a2ca5e8\" style=\"color:#000060\"><strong>Loud and Soft Sounds<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Loud sound<\/strong>: More energy, strong vibrations (e.g., thunder).<\/li>\n\n\n\n<li><strong>Soft sound<\/strong>: Less energy, gentle vibrations (e.g., whisper).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-65865e4d2b51be81acb7346e9d6b3761\" style=\"color:#000060\"><strong>High and Low Pitch<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Pitch<\/strong> means how <strong>high or low<\/strong> a sound is.<\/li>\n\n\n\n<li>A <strong>whistle<\/strong> has a high pitch; a <strong>drum<\/strong> has a low pitch.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-5a8bb54c7548c749a084578f22c1553f\" style=\"color:#000060\"><strong>Ears Help Us Hear<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">Our <strong>ears<\/strong> catch sound waves and send signals to the <strong>brain<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-ad2c7d6888de84db351b46c49c2adc7d\" style=\"color:#000060\"><strong>Good and Bad Sounds<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Pleasant sounds<\/strong>: Music, birds singing.<\/li>\n\n\n\n<li><strong>Unpleasant sounds<\/strong>: Noise (too loud or disturbing).<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-a89017547eb39a467c25108a52f4069f\" style=\"color:#000060\"><strong>Controlling Sound<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>We can make sound <strong>louder or softer<\/strong>, or <strong>block<\/strong> it with materials like cotton or curtains.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-large-font-size wp-elements-423e061e0d8f59763c9cee1dfc6c3dd5\" style=\"color:#000060\"><strong>Fun Fact<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Bats use <strong>echoes<\/strong> to find their way in the dark \u2014 this is called <strong>echolocation<\/strong>!<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group has-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n<\/div><\/div>\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\/82324\/148\/156\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-69.png\" alt=\"\" class=\"wp-image-7524\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-69.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-69-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-69-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-69-400x400.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\"><a href=\"https:\/\/wordwall.net\/play\/82224\/450\/377\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-68.png\" alt=\"\" class=\"wp-image-7525\" srcset=\"https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-68.png 500w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-68-300x300.png 300w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-68-150x150.png 150w, https:\/\/3rdclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-68-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Sound Key Notes: What is Sound? How is Sound Made? Sources of Sound How Does Sound Travel? Loud and Soft Sounds High and Low Pitch Ears Help Us Hear Good and Bad Sounds Controlling Sound Fun Fact 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,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-4394","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/4394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=4394"}],"version-history":[{"count":15,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/4394\/revisions"}],"predecessor-version":[{"id":18674,"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/4394\/revisions\/18674"}],"wp:attachment":[{"href":"https:\/\/3rdclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=4394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}