• Features (Landforms)Features (Landforms)• Processes driving P.T.Processes driving P.T.

DIVERGENT BOUNDARYYoung, Mature, Old

1. Rift Valley & Volcanoes2. Lakes, inland sea, ocean3. Ocean crust formation &

Magnetic mineral alignment 4. Mid-ocean ridge & earthquakes5. Processes: Convection currents

and ridge push

D.B. Features

MT. KILIMANJAROMT. KILIMANJARO

O - C C – C O - O

Trench Mountains Trench

O. Crust Subducts No Subduction Oldest Crust

Subducts

Mountains Convection Volcanic Island Arcs

Volcanoes Slab Pull

Slab Pull

C.B. Features

1.Frequent Shallow Earthquakes2.No major features

T.B. Features

1. Convection Currents: The unequal heating of the

Asthenosphere creates density differences and movement, which exerts a force on the Tectonic Plates. Density example: Lava Lamp

2. Ridge Push: As the mid-ocean ridge grows gravity pushes the old lithosphere down and away from ridge.

3. Slab Pull: As the two plates collide the densest oceanic plate subducts and gravity pulls it into Asthenosphere, while pulling on the rest of the Tectonic Plate.

Processes Driving P.T.

1. Independent spinning inner core2. Churning outer core (convection

currents)3. Earth’s internal heat drives these

processes

1. Protects Earth from deadly solar radiation

2. Creates the Auroras

Processes Driving M.F.