Plate Movement

Question 1

Divergent Boundary

Answer 1

Plates separate and new rock rises (constructive boundary) (e.g. Iceland).

Question 2

Convergent Boundary

Answer 2

Plates Collide, can cause earthquakes and volcanoes (destructive boundary)

Question 3

Transformative Boundary

Answer 3

Plates move past each other whilst pushing into each other, cause earthquakes.

Question 4

Ocean-Ocean Convergent Boundary

Answer 4

Subduction due to speed, form deep sea trenches (e.g. Mariana Trench).

Question 5

Ocean-Continental Convergent Boundary

Answer 5

Subduction due to oceanic plate density, form mountain ranges (e.g. Andes).

Question 6

Continental-Continental Boundary

Answer 6

Collide and rise up, form mountain ranges (e.g. Himalayas).

Question 7

Island Arcs

Answer 7

Formed when ocean-ocean plates converge, forming magma, which rises to create islands (e.g. Japan).

Question 8

Hotspot Volcanoes

Answer 8

Occur in weakened spots in the crust and doesn’t lay near plate boundaries. If in the ocean, one will be active while one is dormant (e.g. Hawaii).

Question 9

What are the two theories on plate movement?

Answer 9

-Convection currents caused by magma movement
-Gravity pulling dense ocean crust