Primary General Studies: The Solar System And The Movement Of The Earth (Paper 1 (basics))

Primary General Studies: The Solar System and the Movement of the Earth (Paper 1 (basics))

2026-11-13

Tutor Prep Guide · rotation and revolution, planet order, moon phases and the cause of seasons

Primary General Studies: The Solar System and the Movement of the Earth (Paper 1 (basics))

Paper one starts with the two basic movements, a 24-hour spin and a 365-day orbit, then planet order and the Moon cycle.

Direct answers　Before answering, ask whether the question is about a spin or an orbit; that single check keeps the numbers apart.

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: The Solar System and the Movement of the Earth
Level	parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety

02　Questions (10 items)

FoundationHow long does the Earth take to spin once on its axis?
FoundationHow long does the Earth take to orbit the Sun once?
FoundationHow many planets are there in the Solar System?
IntermediateCounting from the Sun, which planet is the Earth?
IntermediateHow long does the Moon take to go around the Earth once?
IntermediateWhy do we have day and night on Earth?
ChallengeWhat kind of object is the Sun?
ChallengeOn the spring equinox, how many hours of daylight and darkness are there?
ChallengeThe Sun rises in the east and sets in the west. Which movement causes this?
Error redoError clinic: “The Earth goes around the Sun once in 24 hours.” Where is the mistake?

03　Answers and one-line notes

#	Answer	One-line note
1	About 24 hours, which is one day.	One full turn matches one day and night, which is why we call it a day.
2	About 365 days, which is one year.	One orbit makes one year; the twelve months of the calendar come from this.
3	Eight.	Counting out from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
4	The third.	Mercury is first, Venus second and Earth third, between Venus and Mars.
5	About 29.5 days, roughly one month.	The cycle from full moon back to full moon is about 29.5 days, which is one month.
6	Because the Earth spins: the side facing the Sun has day, the side turned away has night.	As the Earth turns, every place moves in and out of sunlight, giving day and night.
7	A star: it makes its own light and heat.	The Sun is the nearest star to us, while the Moon only reflects sunlight.
8	Twelve hours of daylight and twelve of darkness.	12 + 12 = 24, the full length of a day, so day and night are about equal.
9	The Earth spinning from west to east.	We turn west to east, so the Sun appears to travel east to west across the sky.
10	Travelling around the Sun takes about 365 days; 24 hours is one spin.	One spin is 24 hours and one orbit is 365 days; the two numbers must not be swapped.

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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