SOME INCORRECT Guess of a Statement
There are old rock and new rocks. The new rock is made from molten material that comes from the mantle and pushes the old rock out. As the plates move, it creates the Mid ocean ridge showing the plate boundaries, and magnetic stripes. So Harry Hess used these patterns of rocks to create the theory and find out about Sea Floor Spreading.
CORRECT Notes
- Harry Hess discovered Seafloor Spreading
- Found 3 types of evidence, 1) rocks were older further away from the ridge, the closer to it, the newer the rocks were. 2) Magnetic Stripes; rocks have iron and magnetite, which is one of the strongest natural magnets in the world- and the magnets flipped poles