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P6 General Studies: Space Exploration and Aerospace Technology (Paper 4: mistake clinic)
Tutor Prep Guide · the solar system, light years and light speed, rocket reaction, lunar gravity and satellite orbits
P6 General Studies: Space Exploration and Aerospace Technology (Paper 4: mistake clinic)
Paper four drills unit and classification errors until they stop repeating.
Direct answers Remember one line: check the unit first, then check whether the object is a star or a planet.
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: P6 General Studies: Space Exploration and Aerospace Technology |
| Level | the solar system, light years and light speed, rocket reaction, lunar gravity and satellite orbits |
02 Questions (10 items)
- FoundationA light year measures which quantity?
- FoundationLunar gravity is about what fraction of Earth gravity?
- FoundationCan sound travel through the vacuum of space?
- IntermediateAn instrument weighs 600 N on Earth. On the Moon, where gravity is one sixth, what does it weigh?
- IntermediateThe Moon is 384400 km away and light moves at 300000 km per second. How long is one light trip?
- IntermediateWhich planet is third counting outward from the Sun?
- ChallengeHow many hours does a geostationary satellite need for one orbit?
- ChallengeWhat is the principle behind a rocket lifting off?
- ChallengeWhat protection does a spacesuit give an astronaut?
- Error redoA student writes the Earth to Moon distance as 384400 metres. What is correct?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Length, that is distance | A light year is the distance light covers in a year, not a time. |
| 2 | About one sixth | With weaker gravity, the same object weighs far less on the Moon. |
| 3 | No, a vacuum has no medium | Without particles there is nothing to carry vibration, so space is silent. |
| 4 | 100 N | 600 divided by 6 gives 100 N. |
| 5 | About 1.28 seconds | 384400 divided by 300000 gives 1.28 seconds. |
| 6 | Earth | The order is Mercury, Venus, Earth, and the third is our own planet. |
| 7 | 24 hours | It matches Earth rotation, so it stays fixed as seen from the ground. |
| 8 | It throws gas backward at speed and receives a forward reaction | A rocket does not push against air, so it can accelerate in vacuum as well. |
| 9 | Pressure, oxygen, heat control and radiation shielding | A suit handles vacuum, extreme temperature and radiation at once. |
| 10 | 384400 km, which is about 3.844 hundred million metres | One kilometre is 1000 metres, so the converted value is 3.844 hundred million metres. |
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 solar system against space technology.Tutor Registration →
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