How magnetic reversals on the seafloor provide evidence for seafloor spreading.
Shows how Bernard Burnhes used a lava flow in 1906 to explain how the earth's magnetic field works.
Reviews magnetic evidence for seafloor spreading.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Find out what happens when the magnetic field reverses and if we're about to have one.