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P3 General Studies: Map Reading and Land Use in Hong Kong (Paper 2 (intermediate))
Tutor Prep Guide · bearings and scale conversion, legends and contour reading, and the land uses and reclamation of Hong Kong
P3 General Studies: Map Reading and Land Use in Hong Kong (Paper 2 (intermediate))
Paper two combines scale conversion, grid references, gradient and land use shares, with two step sums.
Direct answers Convert everything to centimetres or metres first and to kilometres last, so no factor of ten goes astray.
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: P3 General Studies: Map Reading and Land Use in Hong Kong |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationA map distance of 6 cm on a 1:20,000 map is how far on the ground?
- FoundationA 4 km walk at 5 km per hour takes how long?
- FoundationIn the four-figure grid reference 2345, what does the first pair of digits give?
- IntermediateWith a 20 m contour interval, how many contours lie between 20 m and 120 m?
- IntermediateA rise of 100 m over a horizontal distance of 500 m is what gradient?
- IntermediateIf about 25 per cent of Hong Kong 1,100 square kilometres is developed, how much is that?
- ChallengeIn a district map 40 per cent is residential and 30 per cent commercial; what share is open space?
- ChallengeA 1 km road measures how many centimetres on a 1:10,000 map?
- ChallengeA 3.5 cm measurement on a 1:40,000 map is how far on the ground?
- Error redoError clinic: the larger the denominator, as in 1:50,000, the more detailed the map. Is that right?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 1.2 kilometres. | 6 × 20,000 = 120,000 cm, that is 1,200 metres or 1.2 kilometres. |
| 2 | 48 minutes. | 4 ÷ 5 = 0.8 hour, and 0.8 × 60 = 48 minutes. |
| 3 | The easting, read across first, then the northing read upwards. | Read across before reading up; reversing them lands you in the wrong square. |
| 4 | 5 contours. | (120 − 20) ÷ 20 = 5, each contour marking another 20 m of climb. |
| 5 | 20 per cent. | 100 ÷ 500 = 0.2, so 20 per cent; gradient is rise over horizontal run. |
| 6 | 275 square kilometres. | 1,100 × 0.25 = 275; the other 825 square kilometres are mostly countryside and water. |
| 7 | 30 percentage points. | 100 − 40 − 30 = 30; all uses together must make 100 per cent. |
| 8 | 10 cm. | 1 km is 100,000 cm, and 100,000 ÷ 10,000 = 10 cm. |
| 9 | 1.4 kilometres. | 3.5 × 40,000 = 140,000 cm, that is 1,400 metres or 1.4 kilometres. |
| 10 | No. | A bigger denominator means each centimetre covers more ground, so fewer details fit on the sheet. |
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.
Then try paper three, using voltage and current to work out power and resistance.Tutor Registration →
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