The Theory Of Sea Floor Spreading Supports What Idea

Several types of evidence supported hess s theory of sea floor spreading.

The theory of sea floor spreading supports what idea.

It was from the continental drift theory convection current theory and the theory of seafloor spreading the theory of plate tectonics was formulated. Wegener proposed that the continents themselves move which is untrue. According to the theory of plate tectonics the earth s lithosphere is broken into distinct plates which are floating on a ductile layer called asthenosphere upper part of the mantle. The motivating force for seafloor spreading ridges is tectonic plate slab pull at subduction zones rather than magma pressure although there is typically significant magma activity at spreading ridges.

The mechanism causing lithospheric plates to move is thought to be a combination of convection in the mantle and slab pull caused by subducting lithosphere identify all of the different observations used to support harry hess theory of seafloor spreading seafloor magnetic anomalies. Seafloor spreading the idea of continental drift circulated in scientific circles until world war ii when sounding gear produced new evidence of what the seafloor looked like. Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading. In 1967 mckenzie and parker suggested the theory of plate tectonics.

Eruptions of molten material magnetic stripes in the rock of the ocean floor and the ages of the rocks themselves. Seafloor spreading helps to explain continental drift in the theory of plate tectonics. The mid ocean ridge is where the seafloor spreading occurs in which tectonic plates large slabs of earth s lithosphere split apart from each other. The gear developed in the 1930s bounced sound waves off the seafloor to determine its depth and features.

Morgan later outlined the theory in 1968. Sea floor spreading is the phenomena of new sea floor being created through mid ocean ridges. What evidence supports hess s theory of seafloor spreading. Sea floor spreading caused the break up of pangea which prompted wegener to add this in support of his continental drift theory.

Evidence from molten material. When oceanic plates diverge tensional stress causes fractures to occur in the lithosphere. The pattern of magnetic strips shows that the seafloor is expanding at mid ocean ridges. Hess its major tenets gave great support to the theory of continental drift continental drift geological theory that the relative positions of the continents on the earth s surface have.

First proposed in the early 1960s by the american geologist harry h. The theory of seafloor spreading. Hess proposed the idea that are places where. Check all that apply.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid ocean ridge system and spreads out laterally away from them. This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Evidence for sea floor spreading. Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid oceanic ridge.