Light and Sound Websites

http://www.lhs.berkeley.edu/shockwave/jar.html

http://www.fearofphysics.com/Sound/dist.html

http://www.nmpft.org.uk/magic-factory/index.html

http://cse.ssl.berkeley.edu/light/light_tour.html

http://www.bbc.co.uk/education/revisewise/science/physical/14_act.shtml

http://amazing-space.stsci.edu/light/

http://www.sciencemadesimple.com/sky_blue.html#ICANREAD