Step On A Crack




WFIU-FM: A Moment of Science: Audio Podcast show

Summary: Why do sidewalks have cracks in them? Why not one long strip of concrete? Why have sidewalks come in sections? The answer: expansion. Learn more on this Moment of Science.<div class="feedflare"> <a href="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?a=pEdHsa59vEY:67a8Qlj37jk:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?a=pEdHsa59vEY:67a8Qlj37jk:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?i=pEdHsa59vEY:67a8Qlj37jk:F7zBnMyn0Lo" border="0"></a> <a href="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?a=pEdHsa59vEY:67a8Qlj37jk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?i=pEdHsa59vEY:67a8Qlj37jk:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?a=pEdHsa59vEY:67a8Qlj37jk:qj6IDK7rITs"><img src="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?d=qj6IDK7rITs" border="0"></a> <a href="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?a=pEdHsa59vEY:67a8Qlj37jk:gIN9vFwOqvQ"><img src="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?i=pEdHsa59vEY:67a8Qlj37jk:gIN9vFwOqvQ" border="0"></a> <a href="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?a=pEdHsa59vEY:67a8Qlj37jk:TzevzKxY174"><img src="http://feeds.feedburner.com/~ff/WfiuAMomentOfSciencePodcast?d=TzevzKxY174" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/WfiuAMomentOfSciencePodcast/~4/pEdHsa59vEY" height="1" width="1">