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Plate Boundaries (Destructive Plate Boundary (also called Convergent or…
Plate Boundaries
Destructive Plate Boundary (also called Convergent or Compression)
Oceanic and Continental plates move towards each other
The thinner, heavier oceanic plate is forced under the thicker continental plate
Friction and heat melt plate subduction zone
Creation of violent earthquakes and volcanoes
Example: Nazca and Soth American plate boundary that formed the Andes
Collision Boundary
Where two continental crusts meet
They weigh the same so neither sinks
They push upwards and form fold mountains
Causing violent earthquakes
Example The Himalayas
Conservative Plate Boundary (or Sliding)
Plates slide past each other
Can also travel in the same direction but at different speeds
Note: Volcanoes are not formed on collision or conservative plate boundaries
Friction can stop the plates until the plates jolt past each other causing an earthquake
Example: San Andreas Fault in California which caused the San Francisco earthquakes in 1906 and 1989
Constructive Plate Boundary (also called Divergent or Tensional)
Two plate moving away from each other
Molten magna escapes where the plates move apart and forms a volcano
Iceland was formed from Eurasion Plate moving apart from the North American Plate
Example: The Mid Atlantic Ridge is on a constructive plate bondary