Subduction and slab pull Flashcards
1
Q
Convection currents in the mantle drag the ………….
A
The heat causes warm material to rise to the lithosphere which causes the colder material to sink back down.
This movement occurs in a pattern called a convection cell, and is repeated causing the lithosphere to move.
2
Q
A subduction zone is formed when
A
when two plates meet
3
Q
What happens with the plates at subduction zones
A
The heavier, denser plate subducts under the lighter, less dense plate
4
Q
As the oceanic crust cools after being subducted it becomes
A
denser and thicker, and gravity forces the lithosphere down into the subduction zone
5
Q
As the oceanic plate sinks it
A
it drags or pulls the plate with it
This is known as slab pull
6
Q
A
