CK-12 Foundation
Ck 12: Earth Science: Magnetic Evidence for Seafloor Spreading
How magnetic reversals on the seafloor provide evidence for seafloor spreading. [Free Registration/Login may be required to access all resource tools.]
CK-12 Foundation
Ck 12: Physical Science: Magnetic Field Reversal
[Free Registration/Login may be required to access all resource tools.] Discusses what a magnetic field reversal is and the evidence that this has happened with the Earth.