Plate Tectonics
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PRESENTATION OUTLINE
SLAB PULL
Gravity that is acting on a plate that is being subducted
RIDGE PUSH
WHEN MAGMA PUSHES THE PLATES APART
DIVERGENT PLATE BOUNDARY
Plates that are moving away from each other
RIFT VALLEY
Land between mountain ranges formed on a divergent plate boundary
MID-OCEAN RIDGE
WHERE RIDGE PUSH HAPPENS IN THE OCEAN
CONVERGENT PLATE BOUNDARY
WHERE THE PLATES GET PUSHED TOGETHER and collide
VOLCANIC ARC
- Andes in South America is an example
- Atlas Mountains are another example
ISLAND ARC
- The Aleutian Islands are an example
- Another example are the islands of Japan
MOUNTAIN RANGE
Example is the Himalayas
SUBDUCTION ZONE
WHERE THE PROCESS OF SUBDUCTION TAKES PLACE
DEEP OCEAN TRENCH
- New oceanic crust that is created at a mid ocean ridge
- An example of a deep ocean trench is the deepest valley called Challenger Deep which is located in the Mariana Trench in the Pacific Ocean.
Transform Plate Boundary
A BOUNDARY IN WHICH THE PLATES MOVE PAST EACH OTHER
EARTHQUAKES
A DAMAGING AND VIOLENT SHAKE ON THE GROUND
THE SAN ANDREAS FAULT
An example of a transform boundary located in California
Hot spots
A SMALL AREA With A HOT TEMPERATURE COMPARED TO ITS SURROUNDINGS
A HOT SPOT EXAMPLE IS
under the volcanoes of Hawaii
Hotspots support the theory of plate tectonics by leaving a chain of extinct volcanoes
OCEAN VENTS
- A hydrothermal vent that is often found by active volcanoes
- An example is Godzilla located in the Pacific Ocean near Oregon
OCEAN VENTS SUPPORT PLATE TECTONICS
where the plates diverge and new crust forms
