Layers of the Earth Resources
Learner.com Layers of the Earth
Thinkquest.com
USGS Layers of the Earth
Earth's Layers Song
Informative Video Structures of Earth
Discovery News Video
National Geographic Finding the Core Video
National Geographic Journey to the Center of the Earth Video
How we know what the inside of the Earth looks like: interactive
Thinkquest.com
USGS Layers of the Earth
Earth's Layers Song
Informative Video Structures of Earth
Discovery News Video
National Geographic Finding the Core Video
National Geographic Journey to the Center of the Earth Video
How we know what the inside of the Earth looks like: interactive