Mantle convection is the slow churning motion of earth s mantle.
Sea floor spreading science definition.
Seafloor spreading and other tectonic activity processes are the result of mantle convection.
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.
Convection currents also recycle lithospheric materials back to the mantle.
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.
Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.
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.
Spreading rates determine if the ridge is fast intermediate or slow.
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.