Divergent Boundaries

Divergent Boundaries: Between two tectonic plates that are moving away from each
other. Divergent boundaries that are in continents makes rifts which produce rift valleys.
Most active divergent plate boundaries are between oceanic plates and exist as midoceanic ridge. Divergent boundaries also form volcanic islands, which happen when
plates move apart to make gaps which molten lava rises to fill.
Convergent Boundary
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Convergent Boundaries: are formed when crust is destroyed and is forced back into the mantel
as one plate dives under another. when that happens substitution zones are formed. Mountains
and volcanoes can be found where plates converge. There are 3 types of convergent boundaries:
Oceanic-Continental Convergence; Oceanic-Oceanic Convergence; and Continental-Continental
Plate Boundary Rap - You Tube 2:34
Transform boundaries and hot
spots – YouTube 5:14
Transform Fault boundaries: Transform-Fault Boundaries are where two plates are
sliding horizontally past one another. These are also known as transform boundaries or
more commonly as faults.Most transform faults are found on the ocean floor. they are
normally are surrounded by mid ocean ridges
Slides: 2,3,4
Great Rift Valley in Kenya Africa
North Section of the Great Rift Valley.
An elongated valley formed by the depression of a block of a planet's
crust between two faults or groups of approximately parallel faults
(see also graben). As the faults move apart, the central area between
them slips down. The friction produced by this slippage can cause
earthquakes and also melt rock which is then released on the surface
from volcanoes. Large and well-known rift valleys include the Great
Rift Valley in East Africa, the Rheingraben, and Valles Marineris on
Transform Boundary
Deep-ocean trench
Convergent boundary
Mid-ocean ridge
Sea-Floor spreading
Convergent Boundary
Rift Valley
Oceanic crust
Convec tion
Continental Crust
2.Deep-ocean trench
Convergent Boundaries
3.Mid-ocean Ridge Sea-Floor Spreading
4. Divergent Boundaries
5. Transform Boundary
6. Convergent Boundary
7. Mountains
9. Subduction
10. Convection
11. Continental Crust
12. Oceanic Crust
8. Rift Valley
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