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Lay a row of naked straws parallel to each other on a smooth tabletop. <\/span>Place two empty soda cans on the straws about an inch apart. <\/span>Lower your nose to the cans and blow hard <\/em>through the space between the two cans and *clink* they should roll toward each other and touch! <\/span><\/span><\/span><\/p>\n Why does this happen? <\/span><\/span><\/em>When air moves, the pressure decreases. <\/span>This creates a lower (relative to the surrounding air) air pressure pocket right between the cans. <\/span>Recall that higher pressure pushes<\/em>, and thus the cans clink together. <\/span>Just remember \u00e2\u20ac\u201c whenever there\u00e2\u20ac\u2122s a difference in pressure, the<\/em> higher pressure pushes. <\/span><\/em><\/span><\/p>\n What kinds of questions can you ask about this project?\u00c2\u00a0 For example: What types of cans work and don’t work?\u00c2\u00a0 How much air pressure you you really need – would a hair dryer be a better choice? Lay a row of naked straws parallel to each other on a smooth tabletop. Place two empty soda cans on the straws about an inch apart. Lower your nose to the cans and blow hard through the space between the two cans and *clink* they should roll toward each other and touch! Why does this […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-272","post","type-post","status-publish","format-standard","hentry","category-science-fair-project-tips-tricks"],"_links":{"self":[{"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=\/wp\/v2\/posts\/272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=272"}],"version-history":[{"count":2,"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=\/wp\/v2\/posts\/272\/revisions"}],"predecessor-version":[{"id":285,"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=\/wp\/v2\/posts\/272\/revisions\/285"}],"wp:attachment":[{"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=272"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.superchargedsciencefairprojects.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"