{"id":3824,"date":"2023-01-10T10:37:58","date_gmt":"2023-01-10T10:37:58","guid":{"rendered":"https:\/\/6thclass.deltapublications.in\/?page_id=3824"},"modified":"2024-12-06T09:17:12","modified_gmt":"2024-12-06T09:17:12","slug":"s-15-a-introduction","status":"publish","type":"page","link":"https:\/\/6thclass.deltapublications.in\/index.php\/s-15-a-introduction\/","title":{"rendered":"s-15.a Introduction"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>INTRODUCTION<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-aae0d72b0df05b1a7d05750bd97517d2\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-31-1024x724.png\" alt=\"\" class=\"wp-image-8524\" style=\"aspect-ratio:1.4166666666666667;width:397px;height:auto\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-31-1024x724.png 1024w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-31-300x212.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-31-768x543.png 768w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/10\/image-31.png 1500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-4f6e415de07f92de119ab7437b8a56eb\" style=\"color:#000060\">1. <strong>What is Air?<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Air<\/strong> is a mixture of gases that surrounds the Earth.<\/li>\n\n\n\n<li>It has no color, taste, or smell, and is invisible to the human eye.<\/li>\n\n\n\n<li>Air is essential for life, as it provides oxygen for humans and animals to breathe.<\/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-bb1eee2f425ce8ef6e9eb3c0ae123408\" style=\"color:#000060\">2. <strong>Composition of Air<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li>Air is made up of several gases, including:\n<ul class=\"wp-block-list\">\n<li><strong>Oxygen (21%)<\/strong>: Essential for respiration in humans and animals.<\/li>\n\n\n\n<li><strong>Nitrogen (78%)<\/strong>: The most abundant gas, inert and does not react easily.<\/li>\n\n\n\n<li><strong>Carbon Dioxide (0.04%)<\/strong>: Used by plants for photosynthesis and exhaled by animals.<\/li>\n\n\n\n<li><strong>Other gases<\/strong>: Small amounts of noble gases (like argon) and water vapor.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Air also contains dust particles, water vapor, and pollen.<\/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-6f69dbb61cf05f9ef27be6ba8a915f49\" style=\"color:#000060\">3. <strong>Importance of Air<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Breathing<\/strong>: Oxygen is needed by living organisms for respiration.<\/li>\n\n\n\n<li><strong>Weather and Climate<\/strong>: Air plays a role in weather conditions and climate patterns.<\/li>\n\n\n\n<li><strong>Sound<\/strong>: Air carries sound waves, allowing us to hear.<\/li>\n\n\n\n<li><strong>Plant Growth<\/strong>: Plants use carbon dioxide during photosynthesis to make food.<\/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-7506aebba55d4618b47f2640c00530f8\" style=\"color:#000060\">4. <strong>The Layers of Air (Atmosphere)<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li><strong>Troposphere<\/strong>: The layer closest to the Earth, where weather occurs and where most living organisms exist.<\/li>\n\n\n\n<li><strong>Stratosphere<\/strong>: Contains the ozone layer, which protects us from harmful ultraviolet radiation.<\/li>\n\n\n\n<li><strong>Mesosphere<\/strong>: The layer where meteoroids burn up upon entry.<\/li>\n\n\n\n<li><strong>Thermosphere<\/strong>: Contains charged particles and is where the auroras occur.<\/li>\n\n\n\n<li><strong>Exosphere<\/strong>: The outermost layer where the atmosphere gradually blends into space.<\/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-353059eced56daf282131cc74e538d82\" style=\"color:#000060\">5. <strong>Air Pressure<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li>Air has weight and exerts pressure on everything it touches. This is called <strong>air pressure<\/strong>.<\/li>\n\n\n\n<li>Air pressure decreases with altitude (the higher you go, the lower the air pressure).<\/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-116154e8c59f9eb92be785cb5f90820b\" style=\"color:#000060\">6. <strong>Pollution in Air<\/strong><\/h3>\n\n\n\n<ul class=\"has-large-font-size wp-block-list\">\n<li>Human activities like burning fossil fuels, industrial emissions, and vehicle exhausts can lead to <strong>air pollution<\/strong>.<\/li>\n\n\n\n<li>Pollutants like carbon monoxide, sulfur dioxide, and particulate matter can be harmful to health.<\/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\/82317\/799\/759\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-62.png\" alt=\"\" class=\"wp-image-5015\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-62.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-62-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-62-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-62-400x400.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\/81750\/080\/139\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61.png\" alt=\"\" class=\"wp-image-5016\" srcset=\"https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61.png 500w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61-300x300.png 300w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61-150x150.png 150w, https:\/\/6thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-61-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>INTRODUCTION Key Notes : 1. What is Air? 2. Composition of Air 3. Importance of Air 4. The Layers of Air (Atmosphere) 5. Air Pressure 6. Pollution in Air 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-3824","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3824","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3824"}],"version-history":[{"count":13,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3824\/revisions"}],"predecessor-version":[{"id":14988,"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3824\/revisions\/14988"}],"wp:attachment":[{"href":"https:\/\/6thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}