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Primary General Studies: Renewable Energy (Paper 1 (basics))
Primary General Studies: Renewable Energy (Paper 1 (basics))
Paper one starts from the definition of renewable energy, looks at how solar, wind and water power work, then uses simple multiplication and division to find energy output.
Direct answers Separate power in W or kW from energy in kWh, apply power times time, and check that all units match.
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: Primary General Studies: Renewable Energy |
| 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 renewable energy?
- FoundationWhere does the energy used by solar panels come from in the first place?
- FoundationWhat turns the blades of a wind turbine?
- IntermediateA 100 W solar panel receives about 5 hours of sunlight a day. How many kWh does it produce daily?
- IntermediateA 2 kW wind turbine runs for 6 hours. How much electricity does it make?
- IntermediateA household uses 300 kWh a month and 40 per cent of it comes from solar power. How many kWh is that?
- ChallengeWhat is the total rating of four 250 W solar panels in kW?
- ChallengeEach solar panel covers 1.5 m². How much roof area do 20 panels need?
- ChallengeThirty 100 W lamps each run 4 hours a day for 30 days. What is the total energy used?
- Error redoA classmate says coal is renewable because coal keeps forming underground. What is wrong?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Energy that nature keeps replacing within a short time, such as solar, wind and water power. | Renewable sources are replaced within a short time, while coal and oil take millions of years to form. |
| 2 | From radiation from the Sun, that is, sunlight. | Solar panels and solar water heaters turn sunlight into useful energy, so output drops on cloudy days and at night. |
| 3 | Moving air, that is, wind. | Wind turns the blades, the blades drive the generator, so stronger wind means faster turning and more electricity. |
| 4 | 0.5 kWh. | 100 W times 5 hours is 500 Wh, which is 0.5 kWh. |
| 5 | 12 kWh. | Power times time gives 2 times 6, that is 12 kWh. |
| 6 | 120 kWh. | 300 times 0.4 is 120 kWh, and that part needs no coal-fired electricity. |
| 7 | 1 kW in total. | 250 times 4 is 1000 W, which is 1 kW. |
| 8 | 30 m². | 1.5 times 20 is 30 m², so the roof must be measured before installation. |
| 9 | 360 kWh in total. | 30 times 100 times 4 times 30 is 360000 Wh, that is 360 kWh. |
| 10 | Coal takes millions of years to form, so it is not replaced within human time and counts as non-renewable. | The key test is quick natural replacement. Coal, oil and natural gas are limited and run out once used. |
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.
After paper one, take paper two and sort out series against parallel in one pass.Tutor Registration →
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