{"id":51394,"date":"2025-06-20T08:47:37","date_gmt":"2025-06-20T14:47:37","guid":{"rendered":"https:\/\/learnlibre.com\/?p=51394"},"modified":"2025-06-20T09:37:26","modified_gmt":"2025-06-20T15:37:26","slug":"heating-and-cooling-of-air","status":"publish","type":"post","link":"https:\/\/learnlibre.com\/es\/heating-and-cooling-of-air\/","title":{"rendered":"Calentamiento y enfriamiento del aire"},"content":{"rendered":"\n<p>Approximate Time to Complete: 10-15 Minutes + Questions &amp; Journal Time<\/p>\n\n\n\n\n\n\n\n<\/p>\n\n\n\n<script src=\"https:\/\/fast.wistia.com\/player.js\" async><\/script><script src=\"https:\/\/fast.wistia.com\/embed\/bz1ahml2zw.js\" async type=\"module\"><\/script><style>wistia-player[media-id='bz1ahml2zw']:not(:defined) { background: center \/ contain no-repeat url('https:\/\/fast.wistia.com\/embed\/medias\/bz1ahml2zw\/swatch'); display: block; filter: blur(5px); padding-top:56.25%; }<\/style> <wistia-player media-id=\"bz1ahml2zw\" seo=\"false\" aspect=\"1.7777777777777777\"><\/wistia-player>\n\n\n\n<p>\n\n\n<h3 class=\"wp-block-heading\" id=\"about-this-activity\">About this activity<\/h3>\n\n\n<p>In this experiment, you will use a balloon that can expand or contract depending on what is inside of it. You will expose that balloon to hot and cold temperatures to see what happens to the balloon and to the air inside.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"what-youll-learn\">What you\u2019ll learn<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li>Hot air expands, cold air contracts.<\/li>\n<\/ul>\n\n\n<style>.kt-accordion-id51394_87eec7-38 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:10px;}.kt-accordion-id51394_87eec7-38 .kt-accordion-panel-inner{border-top:0px solid transparent;border-right:1px solid transparent;border-bottom:1px solid transparent;border-left:1px solid transparent;padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);}.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:1px solid #eeeeee;border-right:1px solid #eeeeee;border-bottom:1px solid #eeeeee;border-left:2px solid #eeeeee;border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;background:#f4f6f9;color:#000000;padding-top:14px;padding-right:16px;padding-bottom:14px;padding-left:16px;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:#000000;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:#000000;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#f4f6f9;}.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38 .kt-blocks-accordion-header:focus-visible{color:#000000;background:#f1f2f6;border-top-color:#eeeeee;border-top-style:solid;border-right-color:#eeeeee;border-right-style:solid;border-bottom-color:#eeeeee;border-bottom-style:solid;border-left-color:#eeeeee;border-left-style:solid;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#000000;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#000000;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#f1f2f6;}.kt-accordion-id51394_87eec7-38 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:#000000;background:#f4f6f9;border-top-color:#eeeeee;border-top-style:solid;border-right-color:#eeeeee;border-right-style:solid;border-bottom-color:#eeeeee;border-bottom-style:solid;border-left-color:#eeeeee;border-left-style:solid;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#000000;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger{background:#000000;}.kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id51394_87eec7-38:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#f4f6f9;}@media all and (max-width: 1024px){.kt-accordion-id51394_87eec7-38 .kt-accordion-panel-inner{border-top:0px solid transparent;border-right:1px solid transparent;border-bottom:1px solid transparent;border-left:1px solid transparent;}}@media all and (max-width: 1024px){.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:1px solid #eeeeee;border-right:1px solid #eeeeee;border-bottom:1px solid #eeeeee;border-left:2px solid #eeeeee;}}@media all and (max-width: 1024px){.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38 .kt-blocks-accordion-header:focus-visible{border-top-color:#eeeeee;border-top-style:solid;border-right-color:#eeeeee;border-right-style:solid;border-bottom-color:#eeeeee;border-bottom-style:solid;border-left-color:#eeeeee;border-left-style:solid;}}@media all and (max-width: 1024px){.kt-accordion-id51394_87eec7-38 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top-color:#eeeeee;border-top-style:solid;border-right-color:#eeeeee;border-right-style:solid;border-bottom-color:#eeeeee;border-bottom-style:solid;border-left-color:#eeeeee;border-left-style:solid;}}@media all and (max-width: 767px){.kt-accordion-id51394_87eec7-38 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id51394_87eec7-38 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:10px;}.kt-accordion-id51394_87eec7-38 .kt-accordion-panel-inner{border-top:0px solid transparent;border-right:1px solid transparent;border-bottom:1px solid transparent;border-left:1px solid transparent;}.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:1px solid #eeeeee;border-right:1px solid #eeeeee;border-bottom:1px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id51394_87eec7-38 .kt-blocks-accordion-header:focus-visible{border-top-color:#eeeeee;border-top-style:solid;border-right-color:#eeeeee;border-right-style:solid;border-bottom-color:#eeeeee;border-bottom-style:solid;border-left-color:#eeeeee;border-left-style:solid;}.kt-accordion-id51394_87eec7-38 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id51394_87eec7-38 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top-color:#eeeeee;border-top-style:solid;border-right-color:#eeeeee;border-right-style:solid;border-bottom-color:#eeeeee;border-bottom-style:solid;border-left-color:#eeeeee;border-left-style:solid;}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id51394_87eec7-38 kt-accordion-has-11-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-arrow kt-accodion-icon-side-right\" style=\"max-width:none\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-4 kt-pane51394_45e9e1-33\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Materials<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<ul class=\"wp-block-list\">\n<li>Empty bottle<\/li>\n\n\n\n<li>Balloon<\/li>\n\n\n\n<li>2 bowls<\/li>\n\n\n\n<li>Hot water<\/li>\n\n\n\n<li>Cold water<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-8 kt-pane51394_fd6b3e-d6\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Pre-experiment Questions<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<ol class=\"wp-block-list\">\n<li>Do you remember from the First Great Lesson what happens to particles when they get hot?<\/li>\n\n\n\n<li>Do you remember from the First Great Lesson what happens to particles when they get cold?<\/li>\n<\/ol>\n\n\n\n<p>Re-watch the <a href=\"https:\/\/learnlibre.com\/lessons\/the-first-great-lesson\/\" target=\"_blank\" rel=\"noreferrer noopener\">First Great Lesson<\/a> if you need a refresher!<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-5 kt-pane51394_714cd0-ca\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Procedure<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<ol class=\"wp-block-list\">\n<li>Put the balloon over the bottle opening.<\/li>\n\n\n\n<li>Fill one bowl with hot water.<\/li>\n\n\n\n<li>Fill the other bowl with cold water.<\/li>\n\n\n\n<li>Put the bottom of the bottle into the hot water. Observe what happens to the balloon.<\/li>\n\n\n\n<li>Put the bottom of the bottle into the cold water. Observe what happens to the balloon.<\/li>\n<\/ol>\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\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2022\/04\/2-Heating-and-Cooling-of-Air-Balloon-on-Bottle.jpg\" alt=\"\"\/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2022\/04\/3-Heating-and-Cooling-of-Air-Pour-Water-in-Bowls.jpg\" alt=\"\"\/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2022\/04\/4-Heating-and-Cooling-of-Air-Put-Bottle-in-Hot-Water.jpg\" alt=\"\"\/><\/figure>\n<\/div><\/div>\n<\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-6 kt-pane51394_708278-cc\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Questions &amp; Further Research<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p>Use these questions as a guide to write a journal entry, make a poster, give a presentation, or write a research report about your experiment or a related topic.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>What happened to the balloon when you put the bottle in hot water?<\/li>\n\n\n\n<li>What happened to the balloon when you put the bottle in cold water?<\/li>\n\n\n\n<li>Can you explain what happened to the air inside of the bottle when you put the bottle in hot water, and when you put the bottle in cold water?<\/li>\n<\/ol>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-11 kt-pane51394_f2d942-46\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Answers<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<ol class=\"wp-block-list\">\n<li><strong>What happened to the balloon when you put the bottle in hot water?<\/strong>\n<ul class=\"wp-block-list\">\n<li>The balloon should have inflated a little bit. If it didn\u2019t, you may need to use a larger bottle or a smaller balloon.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>What happened to the balloon when you put the bottle in cold water?<\/strong>\n<ul class=\"wp-block-list\">\n<li>The balloon should have deflated.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>Can you explain what happened to the air inside of the bottle when you put the bottle in hot water, and when you put the bottle in cold water?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>When you put the bottle into hot water, it heats the air inside of the bottle. When air particles heat up, they spread apart from each other. They want to take up more space. Since the balloon is made of <a href=\"https:\/\/learnlibre.com\/lessons\/viscous-and-fluid-rigid-elastic-and-plastic\/\" target=\"_blank\" rel=\"noreferrer noopener\">elastic<\/a> material, it changes shape to allow the air to take up more space.<\/p>\n\n\n\n<p>When you put the bottle into cold water, it cools the air inside of the bottle. When air particles cool, they huddle closer together. They take up less space. They contract. Since the balloon is made of elastic material, it goes back to its original shape.<\/p>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>This experiment explores how temperature affects air. Want to learn more about the properties and movement of air? Take a look at these topics that come with a Learn Libre membership!<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/learnlibre.com\/lessons\/air-pressure\/\" target=\"_blank\" rel=\"noreferrer noopener\">Air Pressure<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learnlibre.com\/lessons\/foundations-for-the-work-of-air\/\" target=\"_blank\" rel=\"noreferrer noopener\">Foundations for the Work of Air<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learnlibre.com\/lessons\/earths-blanket\/\" target=\"_blank\" rel=\"noreferrer noopener\">Earth\u2019s Blanket<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learnlibre.com\/lessons\/where-does-the-wind-come-from\/\" target=\"_blank\" rel=\"noreferrer noopener\">Where Does the Wind Come From?<\/a><\/li>\n<\/ul>\n\n\n<h2 class=\"wp-block-heading\" id=\"check-out-more-free-experiments\">Check out more free experiments!<\/h2>\n\n\n<p>Are you interested in seeing what Learn Libre\u2019s big-picture lessons, hands-on experiments, and engaging science activities are all about? Check out the free lessons below!<\/p>\n\n\n<!-- ld-course-grid gutenberg block begin --><div class=\"learndash-block-inner learndash-wrapper\">\t\t<div class=\"learndash-course-grid-temp-css\" style=\"display: none;\">\n\t\t\t\t#ld-cg-mc3ruerjhh .grid{grid-template-columns:repeat(3,minmax(0,1fr));}\t#ld-cg-mc3ruerjhh .grid &gt; .item &gt; .post,\t#ld-cg-mc3ruerjhh .grid &gt; .item .content{display:flex;flex-direction:column;height:100%;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .content &gt; *:last-child{margin-top:auto;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .content .entry-title,\t#ld-cg-mc3ruerjhh .grid &gt; .item .content .entry-title *{font-size:1.3rem;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .content .entry-title{}\t#ld-cg-mc3ruerjhh .grid &gt; .item .content .entry-title *{}\t#ld-cg-mc3ruerjhh .grid &gt; .item .content .entry-content{font-size:17px;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .content .entry-content *{color: #686868;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .ribbon{background-color: #000000;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .ribbon,\t#ld-cg-mc3ruerjhh .grid &gt; .item .ribbon *{}\t#ld-cg-mc3ruerjhh .grid &gt; .item .icon{}\t#ld-cg-mc3ruerjhh .grid &gt; .item .icon,\t#ld-cg-mc3ruerjhh .grid &gt; .item .icon *{}\t#ld-cg-mc3ruerjhh .grid &gt; .item .button,\t#ld-cg-mc3ruerjhh .grid &gt; .item .button *{background-color: #ff6633;border:none;}\t#ld-cg-mc3ruerjhh .grid &gt; .item .button,\t#ld-cg-mc3ruerjhh .grid &gt; .item .button *{}\t\t<\/div>\n\t\t<div id=\"ld-cg-mc3ruerjhh\" class=\"learndash-course-grid \" data-page=\"1\"  data-post_type=\"sfwd-courses\" data-per_page=\"6\" data-orderby=\"date\" data-order=\"DESC\" data-taxonomies=\"ld_course_category: free;\" data-enrollment_status=\"\" data-progress_status=\"\" data-group_id=\"0\" data-thumbnail=\"1\" data-thumbnail_size=\"course-thumbnail\" data-ribbon=\"\" data-video=\"\" data-content=\"1\" data-title=\"1\" data-title_clickable=\"1\" data-description=\"1\" data-description_char_max=\"120\" data-button=\"\" data-filter=\"\" data-pagination=\"false\" data-grid_height_equal=\"1\" data-progress_bar=\"\" data-post_meta=\"\" data-skin=\"grid\" data-card=\"grid-2\" data-columns=\"3\" data-min_column_width=\"250\" data-items_per_row=\"3\" data-font_family_title=\"\" data-font_family_description=\"\" data-font_size_title=\"1.3rem\" data-font_size_description=\"17px\" data-font_color_title=\"\" data-font_color_description=\"#686868\" data-background_color_title=\"\" data-background_color_description=\"\" data-background_color_ribbon=\"#000000\" data-font_color_ribbon=\"\" data-background_color_icon=\"\" data-font_color_icon=\"\" data-background_color_button=\"#ff6633\" data-font_color_button=\"\" data-class_name=\"\" data-id=\"ld-cg-mc3ruerjhh\" data-filter_search=\"\" data-filter_taxonomies=\"ld_course_category\" data-filter_price=\"\" data-filter_price_min=\"0\" data-filter_price_max=\"1000\"><div class=\"items-wrapper grid\">\n\t\t\t<div class=\"item grid-2\">\n\t<article id=\"post-11107\" class=\"post post-11107 sfwd-courses type-sfwd-courses status-publish has-post-thumbnail hentry category-montessori-foundations-physical-science ld_course_category-upper-elementary ld_course_category-free ld_course_category-geology\">\n\t\t\t\t\t<div class=\"thumbnail\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"image\">\n\t\t\t\t\t\t<a\n\t\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\t\thref=\"https:\/\/learnlibre.com\/es\/lessons\/earths-crust\/\"\n\t\t\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1640\" height=\"959\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea.webp\" class=\"attachment-course-thumbnail size-course-thumbnail wp-post-image\" alt=\"Earth&#039;s Crust\" srcset=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea.webp 1640w, https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea-300x175.webp 300w, https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea-1024x599.webp 1024w, https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea-768x449.webp 768w, https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea-1536x898.webp 1536w, https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea-18x12.webp 18w, https:\/\/learnlibre.com\/wp-content\/uploads\/2026\/05\/Featured-image-Pangea-600x351.webp 600w\" sizes=\"auto, (max-width: 1640px) 100vw, 1640px\" \/>\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div\n\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\tclass=\"arrow button\"\n\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t>\n\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/earths-crust\/\">\n\t\t\t\t\t\t<span class=\"dashicons dashicons-arrow-right-alt2\"><\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"entry-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/earths-crust\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tEarth&#039;s Crust\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"entry-content\">\n\t\t\t\t\t\t<p><strong>Upper Elementary<\/strong><br \/>\nIs the ground constantly moving beneath your feet?<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/article>\n<\/div>\n\t\t\t<div class=\"item grid-2\">\n\t<article id=\"post-52217\" class=\"post post-52217 sfwd-courses type-sfwd-courses status-publish has-post-thumbnail hentry ld_course_category-anatomy ld_course_category-upper-elementary ld_course_category-free\">\n\t\t\t\t\t<div class=\"thumbnail\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"image\">\n\t\t\t\t\t\t<a\n\t\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\t\thref=\"https:\/\/learnlibre.com\/es\/lessons\/senses-and-information-processing\/\"\n\t\t\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"2878\" height=\"1620\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured.webp\" class=\"attachment-course-thumbnail size-course-thumbnail wp-post-image\" alt=\"Senses and Information Processing\" srcset=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured.webp 2878w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-300x169.webp 300w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-1024x576.webp 1024w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-768x432.webp 768w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-1536x865.webp 1536w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-2048x1153.webp 2048w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-18x10.webp 18w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/08\/Sensory-Featured-600x338.webp 600w\" sizes=\"auto, (max-width: 2878px) 100vw, 2878px\" \/>\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div\n\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\tclass=\"arrow button\"\n\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t>\n\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/senses-and-information-processing\/\">\n\t\t\t\t\t\t<span class=\"dashicons dashicons-arrow-right-alt2\"><\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"entry-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/senses-and-information-processing\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tSenses and Information Processing\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"entry-content\">\n\t\t\t\t\t\t<p><strong>Upper Elementary<\/strong><br \/>\nHow can your own senses play tricks on your brain?<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/article>\n<\/div>\n\t\t\t<div class=\"item grid-2\">\n\t<article id=\"post-50327\" class=\"post post-50327 sfwd-courses type-sfwd-courses status-publish has-post-thumbnail hentry ld_course_category-upper-elementary ld_course_category-free ld_course_category-work-of-water\">\n\t\t\t\t\t<div class=\"thumbnail\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"image\">\n\t\t\t\t\t\t<a\n\t\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\t\thref=\"https:\/\/learnlibre.com\/es\/lessons\/the-water-cycle\/\"\n\t\t\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured.webp\" class=\"attachment-course-thumbnail size-course-thumbnail wp-post-image\" alt=\"The Water Cycle\" srcset=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured.webp 1200w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured-300x169.webp 300w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured-1024x576.webp 1024w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured-768x432.webp 768w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured-18x10.webp 18w, https:\/\/learnlibre.com\/wp-content\/uploads\/2025\/04\/The-Water-Cycle-Featured-600x338.webp 600w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div\n\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\tclass=\"arrow button\"\n\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t>\n\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/the-water-cycle\/\">\n\t\t\t\t\t\t<span class=\"dashicons dashicons-arrow-right-alt2\"><\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"entry-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/the-water-cycle\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tThe Water Cycle\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"entry-content\">\n\t\t\t\t\t\t<p><strong>Upper Elementary<\/strong><br \/>\nCould we be drinking the same water that dinosaurs drank?<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/article>\n<\/div>\n\t\t\t<div class=\"item grid-2\">\n\t<article id=\"post-49252\" class=\"post post-49252 sfwd-courses type-sfwd-courses status-publish has-post-thumbnail hentry ld_course_category-lower-elementary ld_course_category-free ld_course_category-invisible-forces\">\n\t\t\t\t\t<div class=\"thumbnail\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"image\">\n\t\t\t\t\t\t<a\n\t\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\t\thref=\"https:\/\/learnlibre.com\/es\/lessons\/magnetic-fields-and-navigation\/\"\n\t\t\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1736\" height=\"974\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav.webp\" class=\"attachment-course-thumbnail size-course-thumbnail wp-post-image\" alt=\"Magnetic Fields and Navigation\" srcset=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav.webp 1736w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-300x168.webp 300w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-1024x575.webp 1024w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-768x431.webp 768w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-1536x862.webp 1536w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-18x10.webp 18w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-624x350.webp 624w, https:\/\/learnlibre.com\/wp-content\/uploads\/2024\/12\/Magnetic-Fields-and-Nav-600x337.webp 600w\" sizes=\"auto, (max-width: 1736px) 100vw, 1736px\" \/>\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div\n\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\tclass=\"arrow button\"\n\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t>\n\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/magnetic-fields-and-navigation\/\">\n\t\t\t\t\t\t<span class=\"dashicons dashicons-arrow-right-alt2\"><\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"entry-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/magnetic-fields-and-navigation\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tMagnetic Fields and Navigation\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"entry-content\">\n\t\t\t\t\t\t<p><strong>Lower Elementary<\/strong><br \/>\nHow did people navigate the world before GPS?<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/article>\n<\/div>\n\t\t\t<div class=\"item grid-2\">\n\t<article id=\"post-10721\" class=\"post post-10721 sfwd-courses type-sfwd-courses status-publish has-post-thumbnail hentry category-montessori-foundations-physical-science ld_course_category-lower-elementary ld_course_category-free ld_course_category-the-great-lessons\">\n\t\t\t\t\t<div class=\"thumbnail\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"image\">\n\t\t\t\t\t\t<a\n\t\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\t\thref=\"https:\/\/learnlibre.com\/es\/lessons\/the-first-great-lesson\/\"\n\t\t\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1736\" height=\"974\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img.webp\" class=\"attachment-course-thumbnail size-course-thumbnail wp-post-image\" alt=\"The First Great Lesson\" srcset=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img.webp 1736w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-300x168.webp 300w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-1024x575.webp 1024w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-768x431.webp 768w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-1536x862.webp 1536w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-18x10.webp 18w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-624x350.webp 624w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/12\/The-First-Great-Lesson-feature-img-600x337.webp 600w\" sizes=\"auto, (max-width: 1736px) 100vw, 1736px\" \/>\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div\n\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\tclass=\"arrow button\"\n\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t>\n\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/the-first-great-lesson\/\">\n\t\t\t\t\t\t<span class=\"dashicons dashicons-arrow-right-alt2\"><\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"entry-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/the-first-great-lesson\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tThe First Great Lesson\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"entry-content\">\n\t\t\t\t\t\t<p><strong>Lower Elementary<\/strong><br \/>\nWhere did the stars come from? And the Sun? How was our Earth created?<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/article>\n<\/div>\n\t\t\t<div class=\"item grid-2\">\n\t<article id=\"post-41062\" class=\"post post-41062 sfwd-courses type-sfwd-courses status-publish has-post-thumbnail hentry ld_course_category-free ld_course_category-teacher-tools\">\n\t\t\t\t\t<div class=\"thumbnail\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"image\">\n\t\t\t\t\t\t<a\n\t\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\t\thref=\"https:\/\/learnlibre.com\/es\/lessons\/teacher-tools\/\"\n\t\t\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"505\" src=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/01\/Quick-Guide-for-Educators-Featured-Img.webp\" class=\"attachment-course-thumbnail size-course-thumbnail wp-post-image\" alt=\"A Quick Guide for Educators\" srcset=\"https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/01\/Quick-Guide-for-Educators-Featured-Img.webp 900w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/01\/Quick-Guide-for-Educators-Featured-Img-300x168.webp 300w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/01\/Quick-Guide-for-Educators-Featured-Img-768x431.webp 768w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/01\/Quick-Guide-for-Educators-Featured-Img-18x10.webp 18w, https:\/\/learnlibre.com\/wp-content\/uploads\/2021\/01\/Quick-Guide-for-Educators-Featured-Img-600x337.webp 600w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div\n\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\tclass=\"arrow button\"\n\t\t\t\t\ttabindex=\"-1\"\n\t\t\t\t>\n\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/teacher-tools\/\">\n\t\t\t\t\t\t<span class=\"dashicons dashicons-arrow-right-alt2\"><\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"entry-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/learnlibre.com\/es\/lessons\/teacher-tools\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tA Quick Guide for Educators\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"entry-content\">\n\t\t\t\t\t\t<p><strong>Teacher Tools<\/strong><br \/>\nA 5-minute tutorial on how to use Learn Libre lessons.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/article>\n<\/div>\n\t<\/div>\n<\/div><\/div><!-- ld-course-grid gutenberg block end -->\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Approximate Time to Complete: 10-15 Minutes + Questions &amp; Journal Time About this activity In this experiment, you will use a balloon that can expand or contract depending on what is inside of it. You will expose that balloon to hot and cold temperatures to see what happens to the balloon and to the air&#8230;<\/p>","protected":false},"author":100,"featured_media":51405,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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],"tags":[],"class_list":["post-51394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-montessori-foundations-physical-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Heating and Cooling of Air - Learn Libre<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learnlibre.com\/es\/heating-and-cooling-of-air\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Heating and Cooling of Air - Learn Libre\" \/>\n<meta property=\"og:description\" content=\"Approximate Time to Complete: 10-15 Minutes + Questions &amp; Journal Time About this activity In this experiment, you will use a balloon that can expand or contract depending on what is inside of it. 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