Plate boundaries movements Flashcards
what direction do destructive/convergent and destructive/convergent (collision) boundaries face
inwards
oc -> <- cc
cc -> <-cc
what direction do constructive boundaries face
outwards
<- oc oc ->
what direction do conservative boundaries face
diagonally
oc / oc/
what is the area between the two boundaries called
Subduction zone
is the subduction zones pressure and friction high or low
high pressure
high friction
when oceanic and continental crust meet which plate slides under and why?
oceanic crust slides under the continental crust as oc is denser
TRUE OR FALSE are destructive plate boundaries the least seismically active boundary
FALSE
Destructive plates are the most seismically active areas of hazard
What tectonic examples that are formed on destructive plate boundary
Volcanoes
Earthquakes
Tsunami
TRUE OR FALSE is destructive plate boundary’s the only plate boundary that can create tsunamis
TRUE
It is the only plate boundary that can create tsunamis — the displacement of water
What Happens to the oceanic crust within the subduction zone/trench
The oceanic crust begins to melt
The melted oc begins to rise through the continental crusts gaps and can cause volcanoes — because oc doesn’t mix with the mantle
What type of volcanoes are created due to destructive plate boundaries
COMPOSITE VOLCANOES
very violent ⚠️
What tectonic hazards do constructive plate boundaries (divergent) create
Volcanoes
And gentle e/q
What type of ridge is in between the constructive plate boundaries
And what fills up that gap
Mid ocean ridges
Magma fills up gap between the oceanic crusts
What type of mountains do destructive (collision) plate boundaries create
FOLD MOUNTAINS
EG HIMALAYAS
What tectonic hazards do destructive (collision) create
Violent earthquakes
Landslides e.g Nepal 2015
