“Introduction To What Sound Is”
www.fearofphysics.com/Sound/dist.html
Simple animations of how sound waves move molecules in the mediums they pass through.
“Pitch, Notes, and Duration”
www.bbc.co.uk/music/parents/activities/musicsense/ms2.swf
A simple animation of how lower frequencies have longer, slower wavelengths.
“Hearing Test”
www.freemosquitoringtones.org/
Challenges visitors to test the upper registers of their audible spectrum, which decreases with age.
