Sea Floor Spreading Google Definition

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.

Sea floor spreading google definition.

This is a mid ocean ridge. Sea floor spreading synonyms sea floor spreading pronunciation sea floor spreading translation english dictionary definition of sea floor spreading. Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean ridge. Mantle convection is the slow churning motion of earth s mantle.

Spreading rates determine if the ridge is fast intermediate or slow. 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. The process that continually adds new material to the ocean floor is seafloor spreading and the continental slope. Sea floor spreading synonyms sea floor spreading pronunciation sea floor spreading translation english dictionary definition of sea floor spreading.

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. Convection currents carry heat from the lower mantle and core to the lithosphere. 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. Sea floor spreading answer key.

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. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. Seafloor spreading and other tectonic activity processes are the result of mantle convection. Convection currents also recycle lithospheric materials back to the mantle.

Seafloor spreading is happening at b. It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. 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. This creates new ocean crust.