tectonic hazards Flashcards
what type of volcanoes do constructive(divergent) plate margins create
shield (short)
constructive (divergent) plate margins
as the plates move apart there is space for the magma to rise
this cools and turns to rock
this then builds up in layers
what type of volcanos do destructive (convergent) plate margins create
composite (tall)
Destructive (convergent) plate margins
move together
the heavier oceanic crust subducts under the less dense continental crust
this creates friction and melting
this creates space for the magma to rise
collision zone
tectonic plates move towards eachother
both crusts are continental therefore collide
as nor are heavier they are forced up
this created mountains
conservative / earthquakes
tectonic plates move past eachother
as they move past eachother there is friction
leads to a build up of pressure
which leads to a jolt