Tectonic Plate Boundaries by Lauren Harrell

Mountains and volcanoes like these are created by continents and oceanic plates colliding, we call these convergent boundaries.

Facts About Continental Convergent Boundaries

The type of pressure that occurs when this happens is compression, so the rock and the materials essentially pile up.

When the plates collide, the denser plate is pushed down, this is know as subduction.

Facts About Oceanic Convergent Boundaries

Subduction and compression occur, except volcanoes are formed when this happens.

Volcanoes form because the oceanic crust is thinner.

When the lava cools and the volcanoes stop erupting for a long time, it creates and island, like Hawaii.

This is the Mid-Atlantic Ridge near the shore of Iceland, it is a divergent boundary and forms underwater mountain ranges, the type of pressure that occurs here is tension.
This is where the Mid-Atlantic Ridge goes through Iceland, rock formations like this pile up and as the ground is pulled further and further apart, the rock will pile up on either side and a river will form until the entirety of Iceland eventually splits apart.

Transform Boundaries

This is a transform boundary, known as the San Andreas Fault.

The type of tension that is found in transform boundaries like the San Andreas Fault, is shear tension

This is another transform boundary, known as the Alpine Fault, in New Zealand.

Credits:

Created with images by M. Keefe - "Mountains" • kcxd - "Mountains" • Doug Scortegagna - "Mountain" • skeeze - "volcano lava eruption" • schizoform - "2002 hawaii fast lava flow" • YoTuT - "Taos Mountain Volcano" • Sam Bald - "Mountain"

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