Plate Techtonics

Front 1

Constructive plate boundries
At a constructive or divergant plate boundary two plates move apart from each other. As the plates move apart the magma rises through the gaps in the earhs crust and cools down to from new crust.
An example of this is the mid atlantic ridge.

Back 1

Eurasian plate
North American plate
Philippine plate
South american plate
Cocos plate
Nazca plate

Front 2

Destructive plate boundries
At a a destructive or convergent plate boundary two plates move towards each other.
When oceanic plate move towards a continental plate the denser oceanic plate sinks below the continental plate.
As the oceanic plate sinks it melts and forms magma, magma rises through the cracks to form a volcano.

Back 2

African plate
Indo-Australian Plate
Arabian plate

Front 3

Conservative plate boundries
At a conservative or transform boundary, the plates move horizontally past each other without creating or destroying the earths crust.
An example of a conservative boundary is the sanandreas fault.

Back 3

Cone volcanoes
Tend to be found at destructive plate boundries. Tall and steep sided

Front 4

Shield volcanoes
Tend to be found at constructive plate bounderies. Low with gentle slopes.

Back 4

Composite volcanoes.
They are made of alternating layers of lava and ash others are made from lava only.

Front 5

Subduction zone
The denser plate gets forced undreneath the oceanic plate.

Back 5

Pacific plate
Antartic plate
Caribbean plate