Plate Boundaries

There are 3 types of Plate Boundaries

The first of which are the divergent boundaries. Which have have "tension" stress.

In divergent boundaries the plates move away from each other. This causes either...

A gap to form causing a rift or valley, such as the Juan de Fuca Rift Valley
Or the magma rises to the surface and a ridge appears, such as the Mid Atlantic Ridge

In 2016 there was an earthquake in Tanzania, which is located on a divergent boundary. The earthquake had a 5.9 magnitude, 13 were killed and 200 were injured.

The next type of boundary is a convergent boundary. This boundary is very stressed because of compression

In convergent boundaries the plates crash into each other. This causes...

Volcanoes, like Mount Shasta in California.
Or mountains, such as the Himalayas.
Or a trench, such as the Mariana Trench.

In 1995 there was a magnitude 7.7 earthquake in northern Chile

The last type of boundary is the Transform boundary. The stress on these boundaries is "shear" stress.

In Transform boundaries the plates slide past each other. This causes...

Faults lines, such as the San Andreas Fault
and the Kunlun fault

In 1987 an earthquake started in The Santa Cruz Mountains and reached San Francisco with a magnitude of 6.9

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