$180,000 per episode. Miranda Cosgrove is an actress and recording artist with a net worth of $7 million. Miranda Cosgrove has earned he Miranda Taylor Cosgrove is an American actress and singer-songwriter. Cosgrove's career began at the age of three when she appeared in television commercials.
Seafloor spreading. Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.eafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere.
(3) No, Hess *used* echo-sounding (sonar) to enormous effect, but he didn't invent it. (4) No, as seafloor spreads, hot magma (fluid rock) rises to fill the cracks. The rising magma can also be the cause of seafloor spreading, as it rises where there *isn't* a crack, and rises like a wedge, pushing the plates apart.