Here's a breakdown:

* Divergent Plate Boundaries: These are areas where tectonic plates are pulling away from each other.

* Gap Formation: As the plates move apart, a gap forms in the Earth's crust. This gap is filled with magma rising from the mantle.

* Features: Divergent boundaries are characterized by:

* Mid-ocean ridges: Underwater mountain ranges formed by volcanic activity.

* Rift valleys: Depressions on land formed by the pulling apart of the crust.

* Volcanic activity: Magma rising from the mantle can erupt, creating volcanoes.

* Earthquakes: Movement along the divergent boundary can cause earthquakes.

Examples:

* The Mid-Atlantic Ridge: A prominent example of a divergent boundary in the ocean.

* The East African Rift Valley: An example of a divergent boundary on land.

Let me know if you have any other questions!