Sea Floor Spreading Google Definition

Sea floor spreading answer key.

Sea floor spreading google definition. Sea floor spreading synonyms sea floor spreading pronunciation sea floor spreading translation english dictionary definition of sea floor spreading. Mantle convection is the slow churning motion of earth s mantle. Seafloor spreading is happening at b. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate.

It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. N a series of processes in which new oceanic lithosphere is created at oceanic ridges spreads away from the ridges and returns to the earth s interior. Seafloor spreading definition is the divergence at mid ocean ridges of the tectonic plates underlying the oceans that is due to upwelling from the earth s interior of magma which solidifies and adds to the spreading plates. Seafloor spreading theory synonyms seafloor spreading theory pronunciation seafloor spreading theory translation english dictionary definition of seafloor spreading theory.

In recent years satellite images show a very clear mapping of the seabed and are used extensively in the study and exploration of the ocean floor. Seafloor spreading and other tectonic activity processes are the result of mantle convection. This is a mid ocean ridge. The process that continually adds new material to the ocean floor is seafloor spreading and the continental slope.

Convection currents also recycle lithospheric materials back to the mantle. This creates new ocean crust. Spreading rates determine if the ridge is fast intermediate or slow. Convection currents carry heat from the lower mantle and core to the lithosphere.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean ridge. Seafloor spreading definition a process in which new ocean floor is created as molten material from the earth s mantle rises in margins between plates or ridges and spreads out. 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.