National Geographic
National Geographic: Encyclopedia: Core
Understand the characteristics and features of Earth's core from this detailed article. Includes high-quality illustrations, a downloadable poster, a video, and links to other resources.
NOAA
Noaa: Structure of the Earth [Pdf]
Create a model to help learn the layers and structures within the Earth. Identify characteristics of each layer of the Earth.
Other
Moorland School: Earth Science Zone: The Structure of the Earth
Take a look at the Earth from the inside out. This site shows the different layers of the earth with an explanation of the rocks and materials in each layer. Includes a quiz on the structure of Earth.
CK-12 Foundation
Ck 12: Earth Science: Earth's Interior
[Free Registration/Login may be required to access all resource tools.] Discover how scientists learn about Earth's interior using seismic waves, meteorites, density, and the magnetic field. Additional resources are available for download.