destructive plate boundaries

Question 1

continental and oceanic

Answer 1

• denser oceanic plate - subjects below the continental
• place subjects leaves deep ocean trench
• built ip pressure from the melting plate cause explosive volcanoes bursting through the continental plate

Question 2

oceanic and oceanic

Answer 2

• heavier plate subdues leaving an ocean trench
• built up pressure causes underwater volcanoes bursting through oceanic plate
• lava cools and creates new land called island arcs

Question 3

continental and continental

Answer 3

-both plates are not as dense so pressure builds
- ancient oceanic crust is subjected slightly but there is no subduction of contintental crust
- pile ip of continental crust on top of lithosphere due to pressure between plates
- fold mounts formed from piles of continental crust