Sea floor spreading occurs at mid-ocean ridges.
the sea floor separates. magma comes up the crack forming new sea floor
i really don't now why
i really don't now why
Convection currents
under water volcanoes move the oceanic plates and spread them
Mid ocean ridges are the direct result of sea floor spreading.
Sea floor spreading
thermal convection is the primary force that cause the sea floor to spread
Radiologyinfotation
sea-floor spreading
It was created on the sea floor.
An ocean because when the ocean spread out the ocean floor is moving and becoming large but because also of the sinking of the ocean floor it 's not becoming larger it's just maintaining it own size. lyssa