Simon Fraser University
Chem1 Virtual Textbook: Chemical Composition and Structure of the Earth
As part of the General Chemistry Virtual Textbook, this site examines a variety of topics related to the Earth. This page looks at the Earth and its lithosphere, the chemical composition of the Earth, the structure of the Earth, and more.
Columbia University
Columbia University: Evidence for Internal Earth Structure and Composition
This resource describes how seismic waves have helped us to understand the composition of the Earth's interior. It discusses seismic discontinuities, including the Mohorovicic Discontinuity or Moho, and what we have learned about the...
US Geological Survey
Usgs: The Interior of the Earth
This site provides a detailed discussion of the Earth's interior. Facts about the crust, mantle, and core are given along with diagrams of each. Also presents a table that lists the thickness and types of rock found in each part of the...
CK-12 Foundation
Ck 12: Earth Science: Earth's Layers
[Free Registration/Login may be required to access all resource tools.] Identifies the various layers of the Earth, including the crust, mantle, core, lithosphere, and asthenosphere.