7. O-C convergence

Question 1

1.

Answer 1

oceanic plate converges w/ continental plate –> denser oceanic plate subducts beneath less dense continental plate

Question 2

2.

Answer 2

oceanic trench formed at point of subduction

Question 3

3.

Answer 3

continental plate buckles and folds –> forms fold mountains

Question 4

4.

Answer 4

at subduction zone –> sinking plate causes mantle material above to melt –> forms magma

Question 5

5.

Answer 5

magma rises above crust –> give rise of volcanoes & volcanic eruptions

Question 6

e.g.

Answer 6

Sunda trench & Barisan Mountains, Australian Plate and Eurasian Plate

Question 7

e.g. 2

Answer 7

Peru-Chilean Trench & Andes Mountains, Nazca Plate & South American Plate