SCHOOL Homework | Sound travels Mrs Snowdon / May 18, 2012 This is my topic homework. We used the Noise Sniffer app to measure the noise levels. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)Click to share on WhatsApp (Opens in new window)