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P4 General Studies: The Water Cycle (Paper 4 (error clinic))
Tutor Prep Guide · the digestive system and the food pyramid, enzymes and bile, energy and nutrient calculations, and balanced eating habits
P4 General Studies: The Water Cycle (Paper 4 (error clinic))
Paper four revisits the commonest mistakes, with three sums on household use, rain collection and saving water.
Direct answers When a statement says only at 100 degrees or only in sunshine, remember evaporation happens at any temperature.
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: P4 General Studies: The Water Cycle |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationWhat is the change from liquid water to gas called?
- FoundationWhat is the change from vapour to liquid water called?
- FoundationWater returning from the sky to the ground, as rain, snow or hail, has one name. What is it?
- IntermediateA family uses 200 L a day and saves 15 per cent. How much is saved, and what is the new daily use?
- IntermediateA 5 L bucket is filled 12 times. How much water is that?
- Intermediate30 L of rain water is used on plants that need 2.5 L each. How many plants?
- ChallengeWhy is desalinating sea water expensive?
- ChallengeIt rains on 20 days a month and 15 L is collected each time for watering plants. How much tap water is saved?
- ChallengeWashing hands under a running tap uses 3 L, in a basin only 1.2 L. What percentage is saved?
- Error redoError clinic: water only evaporates at 100 degrees Celsius. True?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Evaporation. | It takes in energy, which is why wet skin feels cool. |
| 2 | Condensation. | Condensation releases energy; that is how drops form on the outside of a cold glass. |
| 3 | Precipitation. | Precipitation is the stage that brings water back down to the ground. |
| 4 | Saves 30 L, leaving 170 L a day | 200 times 15 per cent is 30 L, and 200 minus 30 leaves 170 L. |
| 5 | 60 L | 5 times 12 gives 60 L. |
| 6 | 12 plants | 30 divided by 2.5 gives 12 plants. |
| 7 | It takes a lot of energy to boil the water or force it through filters. | Separating salt from water costs energy, so the water is dearer than reservoir water. |
| 8 | 300 L | 20 times 15 gives 300 L. |
| 9 | 60.0 per cent | 3 minus 1.2 is 1.8, and over 3 times 100 gives 60.0 per cent. |
| 10 | No. | Water evaporates at any temperature; 100 degrees is the boiling point, and boiling differs from evaporation. |
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 →
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.