{"id":3725,"date":"2023-01-09T10:22:51","date_gmt":"2023-01-09T10:22:51","guid":{"rendered":"https:\/\/9thclass.deltapublications.in\/?page_id=3725"},"modified":"2024-11-22T07:14:58","modified_gmt":"2024-11-22T07:14:58","slug":"s-11-c-energy","status":"publish","type":"page","link":"https:\/\/9thclass.deltapublications.in\/index.php\/s-11-c-energy\/","title":{"rendered":"S-11.b Energy"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Energy<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes:<\/strong><\/p>\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<ol style=\"color:#b00012\" class=\"has-text-color wp-block-list\">\n<li><strong>What is Energy?<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Energy is the ability to do work or cause a change in an object or system.<\/li>\n\n\n\n<li>It exists in various forms and can be neither created nor destroyed, only transformed from one form to another (Law of Conservation of Energy).<\/li>\n<\/ul>\n\n\n\n<p>A. <strong>Forms of Energy:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kinetic Energy:<\/strong> Energy of motion. It depends on an object&#8217;s mass and velocity.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Potential Energy:<\/strong> Stored energy due to an object&#8217;s position or condition. Common types include gravitational potential energy and elastic potential energy.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Types of Energy:<\/strong><\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/image-50-1024x576.png\" alt=\"\" class=\"wp-image-10276\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/image-50-1024x576.png 1024w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/image-50-300x169.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/image-50-768x432.png 768w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/image-50.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mechanical Energy:<\/strong> The sum of an object&#8217;s kinetic and potential energy.<\/li>\n\n\n\n<li><strong>Thermal (Heat) Energy:<\/strong> The energy associated with the motion of particles in a substance. It is related to temperature.<\/li>\n\n\n\n<li><strong>Chemical Energy:<\/strong> Energy stored in the bonds between atoms and molecules. Released during chemical reactions.<\/li>\n\n\n\n<li><strong>Electrical Energy:<\/strong> Energy carried by moving electrons (electricity).<\/li>\n\n\n\n<li><strong>Nuclear Energy:<\/strong> Released during nuclear reactions, such as fission and fusion.<\/li>\n\n\n\n<li><strong>Sound Energy:<\/strong> Energy produced by vibrating objects that create sound waves.<\/li>\n\n\n\n<li><strong>Light (Radiant) Energy:<\/strong> Energy carried by electromagnetic waves (photons).<\/li>\n<\/ul>\n\n\n\n<p>2. <strong>Conversion of Energy:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Energy can change from one form to another. For example, potential energy can be converted into kinetic energy when an object falls.<\/li>\n<\/ul>\n\n\n\n<p>3. <strong>Law of Conservation of Energy:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The total energy in a closed system remains constant. Energy may change forms but is not created or destroyed.<\/li>\n<\/ul>\n\n\n\n<p>4. <strong>Energy Sources:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Renewable Energy:<\/strong> Derived from sources that are naturally replenished, e.g., solar, wind, hydro, and geothermal energy.<\/li>\n\n\n\n<li><strong>Non-Renewable Energy:<\/strong> Derived from finite sources like fossil fuels (coal, oil, natural gas) and nuclear fuel.<\/li>\n<\/ul>\n\n\n\n<p>5. <strong>Energy Efficiency:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Measures how well energy is converted from one form to another. High efficiency means less energy is wasted.<\/li>\n<\/ul>\n\n\n\n<p>6. <strong>Environmental Impact:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The choice of energy sources can have environmental consequences, including air and water pollution, greenhouse gas emissions, and habitat destruction.<\/li>\n<\/ul>\n\n\n\n<p>7. <strong>Energy Conservation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reducing energy usage through efficient appliances, insulation, and responsible consumption habits.<\/li>\n<\/ul>\n\n\n\n<p>8. <strong>Global Energy Challenges:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Meeting the growing demand for energy while minimizing environmental impact is a global challenge.<\/li>\n\n\n\n<li>Transitioning to sustainable and renewable energy sources is a critical goal.<\/li>\n<\/ul>\n\n\n\n<p>9. <strong>Energy Units:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Energy is measured in units such as joules (J) or kilowatt-hours (kWh).<\/li>\n<\/ul>\n\n\n\n<p>10. <strong>Energy in Everyday Life:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Energy is a fundamental part of our daily lives, used for heating, transportation, electricity, and much more.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color\" style=\"color:#d90000\">Let&#8217;s practice!<\/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\/82464\/166\/165\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50.png\" alt=\"\" class=\"wp-image-6490\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-50-150x150.png 150w\" 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\/81561\/473\/559\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-53.png\" alt=\"\" class=\"wp-image-6491\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-53.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-53-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-53-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Energy Key Notes: A. Forms of Energy: 2. Conversion of Energy: 3. Law of Conservation of Energy: 4. Energy Sources: 5. Energy Efficiency: 6. Environmental Impact: 7. Energy Conservation: 8. Global Energy Challenges: 9. Energy Units: 10. Energy in Everyday Life: 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,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3725","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3725"}],"version-history":[{"count":15,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3725\/revisions"}],"predecessor-version":[{"id":15928,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3725\/revisions\/15928"}],"wp:attachment":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}