* Plate Movement: At divergent boundaries, tectonic plates move apart from each other.
* Magma Upwelling: This separation creates space, allowing magma from the Earth's mantle to rise to the surface.
* New Crust Formation: As the magma cools and solidifies, it forms new oceanic crust.
Examples of Divergent Boundaries:
* Mid-Ocean Ridges: These underwater mountain ranges are the most prominent examples of divergent boundaries. They are where new oceanic crust is constantly being formed.
* Continental Rifts: These are areas where continents are being pulled apart. The East African Rift Valley is an example of this. Over time, these rifts can eventually lead to the formation of new ocean basins.
Let me know if you have any other questions about plate tectonics!