Ocean Trenches Flashcards
1
Q
What are Ocean Trenches?
A
They are the deepest parts of the ocean floor.
Ocean Trenches are hemispheric-scale long but narrow topographic depressions of the sea floor.
Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year.
2
Q
Where are Ocean Trenches located?
A
They are embedded into the Earth’s mantle, so the magma keeps on going a round in a loop
3
Q
Where is the deepest part of the ocean?
A
Mariana trench.
4
Q
Where are Ocean Trenches formed?
A
Formed at subduction zones, where it is denser and where the continental crust goes under the oceanic crust.
