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S4 Geography: Plate Tectonics Practice Paper 2 (10 questions with answers)
S4 Geography: Plate Tectonics Practice Paper 2 (10 questions with answers)
Paper 2 focuses on margin processes: convection, subduction, sea-floor spreading and the distribution of hazards.
Direct answer Margin processes shape landforms and hazards: subduction brings trenches, arcs and deep quakes, divergence brings ridges.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 items |
| Suggested time | 20 to 25 minutes |
| Difficulty mix | Foundation 3 · Intermediate 4 · Challenge 2 · Error redo 1 |
| Chapter | Chapter: S4 Geography: Plate Tectonics – Tutor Lesson Plan |
| Level | S4 (DSE Geography) |
02 Questions (10 items)
- FoundationWhat is the main force that drives plate movement?
- FoundationAbout what percentage of the world earthquakes occur around the Pacific Ring of Fire?
- FoundationWhat pattern do earthquake depths show in a subduction zone?
- IntermediateWhich three landform units mark an Andean-type margin?
- IntermediateWhy are magnetic stripes on the ocean floor arranged symmetrically?
- IntermediateWhat are the features of a transform, or conservative, margin?
- IntermediateA tsunami crosses deep water at 200 m/s. How long does it take to travel 4 000 km?
- ChallengeWhy is there no volcanism in a continental collision zone?
- ChallengeAbout how much more energy does a magnitude 7 earthquake release than a magnitude 6 one?
- Error redoA student wrote that volcanoes occur only at divergent margins. What is wrong?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Convection in the mantle | Heat convection in the asthenosphere drags the lithosphere, assisted by ridge push and slab pull. |
| 2 | About ninety per cent | The same belt holds about three quarters of the world active volcanoes, because subduction zones surround it. |
| 3 | They deepen away from the trench, reaching about 600 km | Foci follow the sinking slab, so shallow and deep events share one zone. |
| 4 | A trench, fold mountains and a volcanic arc | The oceanic slab sinks under the continent and magma rises on the continental side as an arc. |
| 5 | New crust forms at the ridge and is pushed aside, recording the field direction of the time | The stripes are carried outward like a recording tape, the key evidence for sea-floor spreading. |
| 6 | Plates slide past each other, no magma forms, and earthquakes are shallow and frequent | The San Andreas Fault is the classic case: rock locks, then slips suddenly. |
| 7 | About 5.6 hours | 4 000 000 m divided by 200 m/s gives 20000 s, or 5.6 hours. |
| 8 | No slab sinks, so no water reaches the mantle wedge, magma rarely forms, and the crust mainly thickens | Volcanoes need magma, while collision zones are dominated by compression and crustal thickening. |
| 9 | About 32 times | Each unit adds about ten times the amplitude and 32 times the energy, so a magnitude 7 is far more destructive. |
| 10 | All three margin types can produce volcanoes, and subduction zone volcanoes are the most violent | Divergent margins give fissure eruptions, subduction zones give composite cones, and transform margins give almost none. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
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Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.
