IGCSE · 6 · multiple choice
Space physics · Question 1
Space physics · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- recall
- Marks
- 1
- Topics
- 1
- Answer
- Complete
What causes the seasons on Earth?
- A
The Earth's distance from the Sun changes during the year.
- B
The Earth's axis is tilted relative to the plane of its orbit.
- C
The Earth spins on its axis once every 24 hours.
- D
The Sun's output of energy varies during the year.
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Answer and reasoning
Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.
- 1
The correct choice is B: The Earth's axis is tilted relative to the plane of its orbit.
- 2
A is the near-universal misconception, and it is testable against the fact that the northern and southern hemispheres have opposite seasons at the same moment. C gives day and night, not the seasons.
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