PLATE BOUNDARY + LANDFORMS Flashcards
(7 cards)
1
Q
Destructive
A
Oceanic plate is denser and gets subdued
Deep sea trench+ island arcs
2
Q
Constructive
A
2 plates moving apart and magma rises and creates new crust
Sea floor spreading
Rift valley
3
Q
Collision
A
two plates meet
young gold mountains
4
Q
conservative
A
two plates move parallel and slide across each other
fault lines
5
Q
Slab Pull
A
Destructive
oceanic plate is subducted, as plate sinks rest of mantle is pulled with it
6
Q
ridge push/ gravitational sliding
A
constructive
magma rises up as plates move away and creates new crust and pushes old plate apart
7
Q
MAGMA PLUMES
A
radioactive decay heats mantle and can cause plates to move or burn throigh lithosphere
this can cause a hot spot, which stays fixed while the plate moves creating a chain of extinct volcanoes
