Plate Boundaries

• Topography - the features
• Geological events - refers to the events that occured during geological times
• Continental Volcanic Arc - volcanoes formed with the subduction of oceanic lithosphere beneath a continent
• Volcanic Island Arc - chain of volanoes parallel to a trench
• Trench - long narrow depression on the seafloor
• Sea Floor Spreading - process by which new crust is created along mid-ocean ridges as magma cools and solidifies
• Mid-ocean ridge - underwater mountain range
• Andes Mountains

  -continental South American

  -oceanic Nazca
• Rift Valley - valley that forms when two plates move apart from one another
• Marianas Trench

  Philippine Plate

  Pacific Plate
• Cascade

  North American

  Juan de Fuca
• European Alps

  African

  Eurasian