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P5 General Studies: Earth, Sun and Moon, Day, Night and Seasons (Paper 1: basics)
Tutor Prep Guide · rotation causing day and night, the orbit and tilted axis causing seasons, and time zones from longitude
P5 General Studies: Earth, Sun and Moon, Day, Night and Seasons (Paper 1: basics)
The first paper builds the base: keep rotation with day and night, and the orbit with the seasons, clearly apart.
Direct answers Ask one thing first: does this happen once a day or once a year? Once a day is rotation, once a year is the orbit.
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: P5 General Studies: Earth, Sun and Moon, Day, Night and Seasons |
| Level | rotation causing day and night, the orbit and tilted axis causing seasons, and time zones from longitude |
02 Questions (10 items)
- FoundationHow many hours does Earth take to turn once on its axis?
- FoundationIs the side of Earth facing the Sun in daylight or in darkness?
- FoundationAbout how many days does Earth take to go once around the Sun?
- IntermediateOne turn is 360 degrees in 24 hours. On average, how many degrees per hour is that?
- IntermediateIt is 12 noon in Hong Kong. After 6 more hours of rotation, what time is it?
- IntermediateAbout how many days does the Moon take to go once around Earth?
- ChallengeA year has 12 months. Taking 365 days, about how many days is one month?
- ChallengeWhy does Earth have day and night in turn?
- ChallengeWhat is the main reason the Sun rises in the east and sets in the west?
- Error redoA student says the orbit around the Sun causes day and night. What is the correct cause?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 24 hours | One full turn takes exactly 24 hours, which is one day. |
| 2 | Daylight | The side facing the Sun receives sunlight, so it is daytime. |
| 3 | About 365 days | One orbit takes about 365.25 days, which is one year. |
| 4 | 15 degrees | 360 divided by 24 gives 15 degrees. |
| 5 | 18:00 (6 pm) | 12 plus 6 gives 18:00. |
| 6 | About 27 days | The Moon takes about 27.3 days for one orbit of Earth. |
| 7 | About 30.4 days | 365 divided by 12 gives 30.4 days. |
| 8 | Because Earth rotates and is opaque, so it blocks sunlight | Earth makes no light of its own and is opaque, so as it turns the sunlit side comes round in turn. |
| 9 | Earth rotates from west to east | Earth turns west to east, so the Sun appears to move east to west across our sky. |
| 10 | Rotation causes day and night; the orbit and tilted axis cause the seasons | One orbit is a year but day and night repeat daily, so rotation must be the cause. |
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 get comfortable with 15 degrees an hour and time zone gaps.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.