Plate margins and Earthquakes Flashcards
What is a constructive plate margin and what do the 2 tectonic plates do?
They both push upwards and new oceanic crust is formed
What happens at a destructive plate boundary?
Two plates collide and the oceanic plate is forced underneath the continental, this can cause earthquakes
Do all plate margins cause volcanoes?
No, only destructive and constructive do
What happens at a collision plate margin?
Both plates collide and push upwards, this causes earthquakes
What happens at a conservative plate margin?
They slide past each other causing a less powerful earthquake
Do all plate margins form earthquakes?
Yes, but some are more powerful than others
What is the definition of an earthquake?
The shaking and vibration of the Earths crust due to the movement of tectonic plates
How are earthquakes caused?
Rocks are put under immense pressure and stress due to the movement of plates at the boundaries and eventually they reach breaking point, releasing this pressure in shockwaves
How are earthquakes measured?
Using the Richter scale
