Expedited Passport Service: Orland Park Post Office IL provides expedited passport service with a two (2) to four (4) week turnaround time in Orland Park.
1 Seafloor spreading is one of the two major processes of plate tectonics, the other being subduction. 2  Seafloor spreading is the continuous process of forming new igneous rock at midocean ridges by injection of magma that forms new seafloor. Seafloor spreading is one of the two major processes of plate tectonics, the other being subduction. 2  Seafloor spreading is the continuous process of forming new igneous rock at midocean ridges by injection of magma that forms new seafloor.
Three processes that contribute to the motion of tectonic plates  are convection currents, ridge push, and slab pull. Convection  currents is when the mantle rises, cools, sâ¦inks and heats, then  rises and repeats the cycle. Ridge push is a gravitational force  that causes a plate to move.