6. Why are volcanoes mostly found at places where continents meet the seas?

A. It is where water meets land.
B. It is where the oceanic plates sub duct under the continental plate.
C. Underneath it is a subduction zone. D. More magma is produced under the ground because of the muddy seafloor.

7. Most of the Philippine Islands were once part of island arcs. This means that along with this boundary, there once existed two.

A. converging continental plates
B. diverging plates
C. converging oceanic plates
D. plates sliding past each other

8. Earthquake, as an effect of plate movement results in boundaries where plates are: a. converging b. sliding past c. diverging d. subducting

A. a only
B. b only
C. a and b
D. a, b, and c

9. When magma in the earth's mantle develops a great pressure, the ground above it is pushed upward. If this happens in the middle of an ocean, what landform is produced?
A. mountain
B. volcanic island
C. volcano
D. continent

10. Subduction is illustrated in which of the following?
A. convergent plate boundary
B. transform fault boundary
C. divergent plate boundary
D. sub ducting plates

11. An event which may take place on the water surface when a great force pushes a big amount of water upwards.
A. ocean wave
B. typhoon
C, tsunami
D. ocean tide

12. It is the crack on the dry ground or plate caused by horizontal plate movement.
A. fault
B. trench
C. valley
D. ridge

13. It is a phenomenon which takes place due to movement of plates during convergence.
A. earthquake
B.magma formation
C. subduction
D. tsunami

14. A crack on the ground underwater is produced when oceanic crust interacts with another crust. What do we call this?

A. fault
B. trench
C. ridge
D. crack​