lesson

1. revisionplate tectonics

2. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.

3. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
Question
Analysis

4. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
Question
Analysis

5. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
Question
Analysis

6. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
Question
Analysis
= Details

7. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
Question
Analysis
= Details = Give Reasons (because…)

8. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
Planning

9. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
Planning

10. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
Planning

11. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
Planning

12. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
Planning

13. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
Planning

14. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
Planning

15. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
oceanic-continental convergent plate boundaries,
Planning

16. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
oceanic-continental convergent plate boundaries,
plates converge, = compressional forces.
Planning

17. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
oceanic-continental convergent plate boundaries,
plates converge, = compressional forces.
oceanic crust more dense —> compressional
forces push it to subduct.
Planning

18. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
oceanic-continental convergent plate boundaries,
plates converge, = compressional forces.
continental crust less dense —> compressional forces does not push it to subduct. —> rock
layers buckle and fold, —> uplifted
oceanic crust more dense —> compressional
forces push it to subduct.
Planning

19. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
oceanic-continental convergent plate boundaries,
Overtime, …. a range of highland, known as fold mountain, is formed.
plates converge, = compressional forces.
continental crust less dense —> compressional forces does not push it to subduct. —> rock
layers buckle and fold, —> uplifted
oceanic crust more dense —> compressional
forces push it to subduct.
Planning

20. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
At oceanic-continental convergent plate boundaries,
Overtime, …. a range of highland, known as fold mountain, is formed.
plates converge, = compressional forces.
continental crust less dense —> compressional forces does not push it to subduct. —> rock
layers buckle and fold, —> uplifted
oceanic crust more dense —> compressional
forces push it to subduct.
Writing

21. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
At oceanic-continental convergent plate boundaries,
Overtime, …. a range of highland, known as fold mountain, is formed.
the plates converge, applying a huge amount of
pressure known as compressional forces.
continental crust less dense —> compressional forces does not push it to subduct. —> rock
layers buckle and fold, —> uplifted
oceanic crust more dense —> compressional
forces push it —> sink and subduct.
Writing

22. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
At oceanic-continental convergent plate boundaries,
Overtime, …. a range of highland, known as fold mountain, is formed.
the plates converge, applying a huge amount of
pressure known as compressional forces.
Because the oceanic crust is denser, the
compressional forces cause the oceanic crust to
subduct and sink under the continental crust
continental crust less dense —> compressional forces does not push it to subduct. —> rock
layers buckle and fold, —> uplifted
Writing

23. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
At oceanic-continental convergent plate boundaries,
Overtime, …. a range of highland, known as fold mountain, is formed.
the plates converge, applying a huge amount of
pressure known as compressional forces.
Because the oceanic crust is denser, the
compressional forces cause the oceanic crust to
subduct and sink under the continental crust
Because the continental crust is less dense, the compressional forces does not push the
continental crust to subduct. Instead, the rock layers buckle and fold, causing some of the
layers to be uplifted
Writing

24. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
5 marks = 5 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) describe feature + it is formed over time
At oceanic-continental convergent plate boundaries,
Overtime, with further folding and uplifting, a range of highland, known as fold mountain, is formed.
the plates converge, applying a huge amount of
pressure known as compressional forces.
Because the oceanic crust is denser, the
compressional forces cause the oceanic crust to
subduct and sink under the continental crust
Because the continental crust is less dense, the compressional forces does not push the
continental crust to subduct. Instead, the rock layers buckle and fold, causing some of the
layers to be uplifted
Writing

25. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A
(b) the volcano shown in Fig. 12B
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
Question
Analysis
= Details = Give Reasons (because…)
DO WE NEED DIAGRAMS?
Base on the qns,
what do you think?

26. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
Planning

27. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
Planning

28. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
Planning

29. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
Planning

30. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
Planning

31. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
Planning

32. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
Planning

33. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
6) describe feature + it is formed over time
Planning

34. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
oceanic-oceanic convergent plate boundaries—> compressional forces.
6) describe feature + it is formed over time
Planning

35. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
oceanic-oceanic convergent plate boundaries—> compressional forces.
6) describe feature + it is formed over time
compressional forces, —-> develop cracks.
Planning

36. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
oceanic-oceanic convergent plate boundaries—> compressional forces.
compressional forces —> oceanic crust to sink and subduct
6) describe feature + it is formed over time
compressional forces, —-> develop cracks.
Planning

37. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
oceanic-oceanic convergent plate boundaries—> compressional forces.
compressional forces —> oceanic crust to sink and subduct
6) describe feature + it is formed over time
the subduct crust melts and moves up the cracks on the
crust.
compressional forces, —-> develop cracks.
Planning

38. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
oceanic-oceanic convergent plate boundaries—> compressional forces.
the magma reaches the earth’s surface and erupts as lava…cools and hardens as rocks.
compressional forces —> oceanic crust to sink and subduct
6) describe feature + it is formed over time
the subduct crust melts and moves up the cracks on the
crust.
compressional forces, —-> develop cracks.
Planning

39. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…)
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
oceanic-oceanic convergent plate boundaries—> compressional forces.
the magma reaches the earth’s surface and erupts as lava…cools and hardens as rocks.
compressional forces —> oceanic crust to sink and subduct
6) describe feature + it is formed over time
Overtime, …a mountain or hill that eject magma onto the Earth’s surface, known as a
volcano, is formed.
the subduct crust melts and moves up the cracks on the
crust.
compressional forces, —-> develop cracks.
Planning

40. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…) Writing
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
At oceanic-oceanic convergent plate boundaries, the plates converge, applying a huge amount
of pressure known as compressional forces.
the magma reaches the earth’s surface and erupts as lava…cools and hardens as rocks.
compressional forces, —-> develop cracks.
compressional forces —> oceanic crust to sink and subduct
6) describe feature + it is formed over time
Overtime, …a mountain or hill that eject magma onto the Earth’s surface, known as a
volcano, is formed.
the subduct crust melts and moves up the cracks on the
crust.

41. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…) Writing
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
At oceanic-oceanic convergent plate boundaries, the plates converge, applying a huge amount
of pressure known as compressional forces.
the magma reaches the earth’s surface and erupts as lava…cools and hardens as rocks.
Because of the huge pressure from the compressional
forces, parts of the crust develop cracks.
compressional forces —> oceanic crust to sink and subduct
6) describe feature + it is formed over time
Overtime, …a mountain or hill that eject magma onto the Earth’s surface, known as a
volcano, is formed.
the subduct crust melts and moves up the cracks on the
crust.

42. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…) Writing
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
At oceanic-oceanic convergent plate boundaries, the plates converge, applying a huge amount
of pressure known as compressional forces.
the magma reaches the earth’s surface and erupts as lava…cools and hardens as rocks.
Because of the huge pressure from the compressional
forces, parts of the crust develop cracks.
Because the oceanic crust is dense, the compressional
forces causes the oceanic crust to sink and subduct under a
less dense oceanic crust.
6) describe feature + it is formed over time
Overtime, …a mountain or hill that eject magma onto the Earth’s surface, known as a
volcano, is formed.
the subduct crust melts and moves up the cracks on the
crust.

43. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…) Writing
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
At oceanic-oceanic convergent plate boundaries, the plates converge, applying a huge amount
of pressure known as compressional forces.
the magma reaches the earth’s surface and erupts as lava…cools and hardens as rocks.
Because of the huge pressure from the compressional
forces, parts of the crust develop cracks.
Because the oceanic crust is dense, the compressional
forces causes the oceanic crust to sink and subduct under a
less dense oceanic crust.
6) describe feature + it is formed over time
Overtime, …a mountain or hill that eject magma onto the Earth’s surface, known as a
volcano, is formed.
Because the mantle is much hotter than the crust, the
subduct crust melts and moves up the cracks on the crust.

44. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…) Writing
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
At oceanic-oceanic convergent plate boundaries, the plates converge, applying a huge amount
of pressure known as compressional forces.
As a result, the magma reaches the earth’s surface and erupts as lava.
The lava cools and hardens as rocks.
Because of the huge pressure from the compressional
forces, parts of the crust develop cracks.
Because the oceanic crust is dense, the compressional
forces causes the oceanic crust to sink and subduct under a
less dense oceanic crust.
6) describe feature + it is formed over time
Overtime, …a mountain or hill that eject magma onto the Earth’s surface, known as a
volcano, is formed.
Because the mantle is much hotter than the crust, the
subduct crust melts and moves up the cracks on the crust.

45. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley.
= Details = Give Reasons (because…) Writing
6 marks = 6 steps
1) Where it happened?
2) What Happened?
3) What happened?
4) What happened?
5) What happened?
At oceanic-oceanic convergent plate boundaries, the plates converge, applying a huge amount
of pressure known as compressional forces.
As a result, the magma reaches the earth’s surface and erupts as lava.
The lava cools and hardens as rocks.
Because of the huge pressure from the compressional
forces, parts of the crust develop cracks.
Because the oceanic crust is dense, the compressional
forces causes the oceanic crust to sink and subduct under a
less dense oceanic crust.
6) describe feature + it is formed over time
Overtime, as more eruptions cause more layers of lava to harden, cool and accumulate, a
mountain or hill that eject magma onto the Earth’s surface, known as a volcano, is formed.
Because the mantle is much hotter than the crust, the
subduct crust melts and moves up the cracks on the crust.

46. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley. [6]
= Details = Give Reasons (because…)

47. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley. [6]
= Details = Give Reasons (because…)
Able to check (c) on your own??

48. Bishan Park Sec
1. Describe and explain the processes responsible for the
formation of
(a) the fold mountains shown in Fig. 12A [5]
(b) the volcano shown in Fig. 12B [6]
(c) With the aid of well-labelled diagrams, explain the
formation of a rift valley. [6]
= Details = Give Reasons (because…)
Able to check (c) on your own??
formation = step by step, how it happens
1st) Where it happened?
MIDDLe) What Happened? - what forces? what processes?
last) describe feature + it is formed over time

49. use what you have learnt
from your mistake and try:
"
Naval base qns 6A
"
within 7 mins

50. Let’s go through your answer

51. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

52. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

53. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= Give Reasons (because…)
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

54. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= Give Reasons (because…)
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

55. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

56. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

57. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
What happened?
(process, force)

58. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps
What happened?
(process, force)

59. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps 1 mark
What happened?
(process, force)

60. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
What happened?
(process, force)

61. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
: SUbduct
What happened?
(process, force)

62. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

63. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

64. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

65. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

66. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

67. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

68. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
compressional forces
Oceanic plate denser than continental plate

69. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps
compressional forces
Oceanic plate denser than continental plate

70. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps 1 mark
compressional forces
Oceanic plate denser than continental plate

71. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
compressional forces
Oceanic plate denser than continental plate

72. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary
Subduct = oceanic plate sink and go beneath continental plate
Planning
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
: SUbduct
compressional forces
Oceanic plate denser than continental plate

73. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

74. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

75. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

76. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

77. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

78. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

79. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

80. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
2 marks = 2 steps
As the oceanic plate is denser than the continental
plate,
Writing

81. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
2 marks = 2 steps 1 mark
As the oceanic plate is denser than the continental
plate,
Writing

82. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
As the oceanic plate is denser than the continental
plate,
Writing

83. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
Subduct = oceanic plate sink and go beneath continental plate
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
: SUbduct
As the oceanic plate is denser than the continental
plate,
Writing

84. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

85. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

86. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

87. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

88. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

89. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

90. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
As the oceanic plate is denser than the continental
plate,
Writing

91. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
2 marks = 2 steps
As the oceanic plate is denser than the continental
plate,
Writing

92. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
2 marks = 2 steps 1 mark
As the oceanic plate is denser than the continental
plate,
Writing

93. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
As the oceanic plate is denser than the continental
plate,
Writing

94. Naval Base Qns 6A
Explain why oceanic plates subduct under continental plates
and identify the resulting landform at the subduction zone. [3]"
= GIMME the name!= Give Reasons (because…)
1)Start point
2) End point
At a convergence oceanic-continental plate boundary,
compressional forces push the oceanic plate and
continental plate against each other.
the oceanic plate sink and go beneath continental plate
2 marks = 2 steps 1 mark
: convergence oceanic-continental plate boundary
: SUbduct
As the oceanic plate is denser than the continental
plate,
Writing

95. More practices if you’re done