Plate Project

By: Jacob Garcia

Pangea

Alfred wegner had a theory that the earths continents once were all connected.I believe him because it is probably true .When he first told people his theory they didn't believe him because he didn't have evidence.Then they started to believe him because they found evidence. Heres the evidence they found similar types of rocks on different continents and found warm weather plants in cold climates.

Seafloor Spreading

Harry hess had a theory on seafloor spreading unlike Wegners theory Hess has evidence like mid ocean ridges rocks that younger are closer rocks that are farther from the mid ocean ridges and magma comes through the cracks of the mid ocean ridges.