* Mid-ocean ridges are divergent plate boundaries: These are areas where tectonic plates move apart, creating space for new oceanic crust to be formed.
* Magma upwells from the mantle: The separation of the plates allows magma, molten rock from Earth's mantle, to rise to the surface.
* Magma erupts and solidifies: The magma erupts along the ridge, creating new oceanic crust. This process is called seafloor spreading.
* The process is continuous: As the plates move apart, magma continues to erupt, creating new crust and pushing the existing crust away from the ridge.
So, while magma does indeed play a crucial role in the formation of mid-ocean ridges, it's not just oozing through cracks. It's a more dynamic process involving the upwelling and eruption of magma, which solidifies to form new crust.
