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S1 English: Comparatives and Superlatives (Paper 4: mistake clinic)
Tutor Prep Guide · parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety
S1 English: Comparatives and Superlatives (Paper 4: mistake clinic)
Paper four reworks five weak spots: cycle stages, the fresh water share, upper-course erosion, sediment size and discharge.
Direct answers Remember one line: water moves rather than vanishes, erosion peaks upstream, and discharge is always area times velocity.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: S1 English: Comparatives and Superlatives |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationWhich two processes change water from liquid to vapour and back?
- FoundationIs groundwater part of the water cycle?
- FoundationIn which course is erosion strongest?
- IntermediateHow does sediment size change from source to mouth?
- IntermediateA reach of 20 square metres flows at 1.5 metres per second. What is the discharge?
- IntermediateWhat percentage of all water is fresh water?
- ChallengeWhat percentage of all water is stored in glaciers?
- ChallengeA reservoir holds 20 million cubic metres and supplies 500 000 cubic metres a day. For how many days does it last?
- ChallengeHow is an oxbow lake related to a meander?
- Error redoA student says salt from seawater falls back on land with rain. What is wrong?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Evaporation and condensation | Evaporation takes in heat and condensation releases it; both drive the cycle. |
| 2 | Yes, groundwater flows slowly into rivers and the sea | Infiltrated water is stored in aquifers and returns as springs or base flow. |
| 3 | The upper course, because the gradient and velocity are greatest | Downcutting is strongest upstream and produces V-shaped valleys. |
| 4 | It decreases downstream | Coarse gravel is dropped upstream and the finest clay reaches the estuary. |
| 5 | 30.0 cubic metres per second | Twenty times 1.5 gives 30.0. |
| 6 | 2.5 per cent | 97.5 per cent is salt water and 2.5 per cent is fresh water. |
| 7 | 1.72 per cent | Glaciers hold 68.7 per cent of fresh water, about 1.72 per cent of all water. |
| 8 | 40 days | Twenty million divided by 500 000 gives 40 days. |
| 9 | It forms when a meander is cut off | Once the meander neck is breached, the abandoned loop remains as an oxbow lake. |
| 10 | Evaporation takes only water; the salt stays in the sea and rain is fresh | This separation of water from salt is a key feature of the cycle. |
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.
With all four done, go back to the chapter page and revise the three parts of a closed circuit plus three safety habits.Tutor Registration →
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