Sea-floor spreading

Sea-floor spreading is a geological process that occurs at mid-ocean ridges, where tectonic plates move apart. As they separate, magma from below the Earth's crust rises to fill the gap, creating new oceanic crust. This process gradually pushes older crust away from the ridge, causing the ocean floor to expand. This movement also contributes to the formation of underwater mountains and can lead to earthquakes. Overall, sea-floor spreading plays a crucial role in shaping the Earth’s surface and supports the theory of plate tectonics, which explains how continents drift over time.