http://www.solarviews.com/eng/earthint.htm
This link will give you information on the density and composition of the Earth's layers.
http://mediatheek.thinkquest.nl/~ll125/en/crust.htm
This site lists the temperatures for each layer of the Earth.
http://jersey.uoregon.edu/~mstrick/AskGeoMan/geoQuerry57.html
Do you need to know the density of each layer of Earth?
http://nces.ed.gov/nceskids/createagraph/default.aspx
Use this free site to create a pie graph of your data.
