US Geological Survey
Usgs: How to Build a Model Illustrating Sea Floor Spreading
This is a comprehensive website featuring how to build a model that illustrates sea-floor spreading and subduction. It has diagrams and pictures reviewing major geological concepts.
CK-12 Foundation
Ck 12: Earth Science: Magnetic Evidence for Seafloor Spreading
[Free Registration/Login may be required to access all resource tools.] How magnetic reversals on the seafloor provide evidence for seafloor spreading.
Smithsonian Institution
Smithsonian: This Magnetic Map Shows Earth as You've Never Seen It Before
This article discusses a map generated by the European Space Agency's Swarm mission that depicts Earth's magnetic field using satellites to measure magnetism. The map reveals magnetic stripes and magnetic anomalies. The article includes...