A Big Giant, Floating Onion (The Layers of the Earth)

Did you know that the planet that you live on is almost like a big giant onion?  This is because they both have layers that make them what they are now.  The earth's layers have names, there is the crust, the upper mantle, the lower mantle, the upper core, and the inner core.  To learn more about the layers of the earth check out these cool links.

Layers of the Earth:

http://library.thinkquest.org/

Earths Layers Game:

http://purposegames.com/game/1364