SOLAR SYSTEM

Detailed explanation-1: -This “recycling” process, later named “seafloor spreading, ‘’ carries off older sediment and fossils, and moves the continents as new ocean crust spreads away from the ridges. Supporting Wegener’s theory of continental drift, Hess explained how the once-joined continents had separated into the seven that exist today.

Detailed explanation-2: -One of the first major achievements of sci-entific ocean drilling was the confirmation of seafloor spreading. Ocean drilling allowed researchers to collect sediment samples in a transect across the Mid-atlantic Ridge in the South atlantic Ocean.