Bibliography

= Bibliography; = Energy Unknown. "Energy." //Energy//. Web. 6 Sept. 2011. . 18:59.

http://www.unmuseum.org/speed.htm author unknown;

Colegio Franklin Delano Roosevelt. "Sound and Light." //Sound and Light//. Feb. 1998. Web. .

"The Eye and the Ear." NewBay Media, 2011. Web. .

"Properties of Waves." 29 Sept. 1999. Web. .

Citation added:  Dan Russell. "Types of Waves."  //TYPES OF WAVES//. 2011.  Web. .   Unknown. "Waves."  2010.  Web. .

Author Unkown. "Making Different Sounds." //Different Sounds//. 2009. Web. .