Divergent plate boundary is when two plates move away from each other using tension.Tension is the stress that pulls something apart.There are two types of divergent boundaries,oceanic to oceanic or continental to continental.Both types form their own landforms,oceanic to oceanic forms mid ocean ridges, earthquakes, and volcanos and continental to continental forms continental rifts and volcanoes.An example of a divergent boundary is the East African Rift Valley.Iceland eruption of the Eyjafjalljokull volcano on April 14, 2010. It effected the economy,political and cultural activities in Europe and across the world.
Convergent plate boundary is when two plates move at each other and collide using compression. Compression is the stress of squeezing something together.The two types of convergent boundaries are oceanic to continental and continental to continental.Oceanic to continental forms volcanic mountains and trenches. Continental to continental forms earthquakes and mountains.An example of this boundary would be mount Rainer. Chile had a massive earthquake on May 22, 1960.It impacted not only cities in chile but felt across the pacific in countries that were damaged by the tsunami triggered by the earthquake.
Transform plate boundary is when two plates slide horizontally past each other using shear. Shear is the stress of parallel forces acting in opposite directions.It forms earthquakes and faults. An example would be the San Andreas fault.In 1857 on January 9 the southern portion of the San Andreas ruptured.Severe damage and affected south and north California and two were killed.