*1.+divergent+plate+boundaries


 * 1. divergent plate boundaries

=Divergent Plate Boundaries=

-Also known as Constructive Boundary or Extensional Boundary
-Divergent Plate boundaries mark the area where tectonic plates are spreading apart.

-In the oceans, sea floor spreading causes plates to separate.

- A similar process can occur on continents.

Example 1.- Diverging plates at the East African Rift are slowly breaking Africa into pieces.

Example 2.- About 16 00km long and the largest mountain range on Earth, Mid- Atlantic Ridge is a system of spreading ridges that is separating the Americas from Africa, Europe and Asia.

-Divergent Plate Boundaries within continents initially produce rifts which produce rift valleys

- Divergent Plate Boundaries also form Volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill.

- When Earth's brittle surface layer called the litosphere is being pulled apart, it pushes the tectonic plates spreading them apart.

-When the plates are pulled apart on the boundary, the earth that was between the two falls to the interior of the earth known as the asthenosphere.

- Magma then seeks up to fill these cracks. In this way crust is formed along the boundary.

-This is a diagram of The Divergent Plate Boundary



- This is a photograph of the divergent plate boundary

Here is a world map showing where in the world Divergent Plate Boundaries Occur:

-And here is a video of Divergent plate boundaries

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