{"id":135702,"date":"2015-10-23T02:00:00","date_gmt":"2015-10-22T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=24ab6eee293e68fa0c090aac72ec0503"},"modified":"2015-10-23T02:00:00","modified_gmt":"2015-10-22T23:00:00","slug":"teaching-about-mechanical-waves-and-sound-with-a-tuning-fork-and-the-sun","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=135702","title":{"rendered":"Teaching about mechanical waves and sound with a tuning fork and the Sun"},"content":{"rendered":"<p>Literature in Physics Education has shown that students encounter many difficulties in understanding<br \/>\nwave propagation. Such difficulties lead to misconceptions also in understanding sound, often used<br \/>\nas context to teach wave propagation. To address these issues, we present in this paper a module in<br \/>\nwhich the students are engaged in computer-based activities dealing with sounds produced by a tuning<br \/>\nfork and the Sun. The main reason underlying such choice is to show how the same measurement<br \/>\ntechnique (spectral analysis) can be used to obtain information about very different phenomena. The<br \/>\nactivities build on a formal analogy to determine the fundamental frequency of sounds emitted by the<br \/>\ntwo sources (tuning fork and Sun). Using a digital audio editor, the sounds are analyzed using three<br \/>\ntypes of graphs: intensity versus time (waveform), intensity versus frequency (spectrum), and<br \/>\nfrequency versus time (spectrogram). The aim of the activities is to address students\u2019 alternativ&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Literature in Physics Education has shown that students encounter many difficulties in understanding<br \/>\nwave propagation. Such difficulties lead to misconceptions also in understanding sound, often used<br \/>\nas context to teach wave propagation. To address t&#8230;<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-135702","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/135702","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=135702"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/135702\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=135702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=135702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=135702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}