Tectonic hazards Flashcards
Constructive margin is
Two plates moving apart
A constructive margin makes a volcano by
Magma forcing its way through the gap of
the two plates
A constructive margin makes a earthquake by
The tension of the magma forcing through
may cause a mild earthquake
Destructive margin is…
Two plates move towards each other.
Oceanic is subducted beneath the
continental
A destructive margin cause earthquakes by
Friction causes them
A destructive margin causes volcanoes by
Sinking ocean plate causes magma
Conservative margin is
Plates move past each other at different rates
A conservative margin causes an
earthquake by
Friction makes stress causing earthquakes
A conservative margin causes a volcano by
They don’t cause there is no magma
Oceanic crust is
Thin but dense
Continental crust is
Thick but less dense
Tectonic hazards occur at
Plate margins
Earthquake is
Sudden violent period of ground shaking.
Friction and sticking between plates creates
enormous pressure and stress which build
up to breaking point
Volcano is
Large often cone shaped landforms, former
over long periods, They are fed by magma-
deep within the earths mantle
How can the risk be reduced
PPP
-prediction( there is scientific equipment hat
can be used to estimate when à tectonic
hazard will happen and what’s path they will
take)
-planning( people can plan for example
shutter over windows and clearing high
risks areas)
-protection(it can be taught in schooy how t6
cope with tectonic hazards for example for
an earthquake so-shutter speed or
evacuation and a volcano- evactation or
diverting the magma)
