The Solar System — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Solar-System members and orbital-speed ideas are included. Detailed formation, eccentric-orbit and planet-data interpretation goes beyond the listed content.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge IGCSE Co-ordinated Sciences 0654 syllabus 2028–2029 · P6.1, p75; P6.2.1, p76
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