Convergent plate boundaries Flashcards
At convergent plate boundaries two plates are…
colliding
Where continental crust and Oceanic crust converge the more dense oceanic crust is subducted under the less dense continental crust. Thjs forms a ____ ___ ______, For example the trench in the Pacific Ocean.
deep sea trench Peru Chile trench
____ _________ also form where the plates meet. They’re made from sediments that have accumulated on the continental crust which are folded upwards along with the edge of the continental crust.
fold mountains
This image shows…
The the newest rock formed is found at the top of fold mounatins and the oldest at the bottom
With oceanic to continetal subduction the oceanic crust is heated by ________, melting it into _____
friction magma
The magma is less dense than the continental crust above and will rise back to the surafce through the ___________ crust to form ________.
continental crust volcanos
As one plate moves under the other they can get stuck, causing ________ to build up. when the pressure becomes too much the plates ____ past eachother causing an __________.
pressure jolt earthquake.
When two plates of Oceanic crust are moving towards eachother, the ______ of the two will be subducted forming a ____ ___ ______ and triggering ___________ and ________ _________
denser deep sea trench earthquakes and volcanic eruptions
Volcanic eruptions that take place underwater - when two plates of oceanic crust converge create ______ _____ which are clusters of islands that sit in a curved line. For example the _______ _______ found where the Philipinne plate and Pacific plates are converging in the East Philipinne Sea.
island archs Mariana Islands
Where two plates of continenetal crust move towrads eachother, neither is subducted so they are not any ________. Howver the pressure that builds up between them can cause ___________.
volcanos earthquakes
Fold mountains can be formed when continental crust converges. For example the _________ wwre formed in this way.
Himalayas
An example of a convergent oceanic/continental is the…
The land forms associated with it are…
Do you get earthquakes or volcanoes?
Nazca and South American plates
deep sea trenches and young fold mountains
yes Both
An example of a convergent oceanic/oceanic plates are…
what land forms are associated with this type of boundary?
Do earthquakes or volcanos occour here?
Phlipinne plate and pacific plate
deep sea trenches and island archs
yes both
An example of convergent continental/continental plates are…
What landforms are associated with it?
Do earthquakes or volcanoes occour here?
Indo-Auatralian and Eurasian plates
fold mountains
only earthqukes
