plate boundaries Flashcards
features of a destructive plate boundary
oceanic crust subducted under continental by slab pull (due to higher density), friction causes earthquake and in the subduction zone magma is heated and rises to fill the gap
tectonic hazards at destructive plate boundary
volcanoes
earthquakes
tsunamis
direction of plate movement at destructive
convergent (towards each other)
costructive plate boundary features
mid atlantic ridges are created as plate diverge, so new litosphere is created through gaps created
tectonic hazards at constructive boundaries
volcanoes (shield)
earthquakes (frequent, gentle)
plate movement direction
diverging (two oceanic plates move apart)
features of collision boundaries
uplift and subduction occurs with slab pull when two continental plates move towards each other
tectonic hazards at collision boundaries
earthquakes only
plate direction movement at collision boundaries
converging (move towards each other)