L5a - constructive margin

Question 1

Describe, explain the formation of, and give an example for these landforms found on constructive plate margins

Answer 1

Look Down

Question 2

Mid ocean ridge

Answer 2

Underwater mountain range, volcanically active and formed when magma pushes oceanic crust above the sea bed.
EG Mid Atlantic ridge

Question 3

Rift valley

Answer 3

A gash in the ground between two ridges, formed when gravitational sliding pulls two ridges apart.

Question 4

Transform fault

Answer 4

A crack or fracture where two sections of the plate slide past each other horizontally.
They exist because MORs aren’t straight lines, more like jaggedy segments.

Question 5

Volcanic island

Answer 5

When a submarine volcanic eruption launches an island above the ocean’s surface.
EG Surtsey island, Iceland

Question 6

Volcano

Answer 6

Magma pushing a mountainous formation above the Earth’s crust, and erupting as lava.
EG Erta Ale, Ethiopia