This exam focus covers Exam Focus within Seismic Waves for GCSE Physics. Revise Seismic Waves in Waves for GCSE Physics with 13 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 12 of 14 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 12 of 14
Practice
13 questions
Recall
15 flashcards
🎯 Exam Focus
Frequently Examined
Seismic waves are a favourite exam topic because they require you to apply wave knowledge to a real-world context. Expect:
- Explain the S-wave shadow zone — use properties of transverse waves to explain why they can't pass through liquid
- Compare P and S waves — type, particle motion, media they travel through
- Interpret a diagram of Earth's interior showing wave paths and shadow zones
- Explain what seismic evidence tells us about Earth's layers (outer core = liquid, inner core = solid)
Classic 4-mark question: "Explain how seismic wave data provides evidence that the Earth's outer core is liquid." Full marks requires: S-waves are transverse → cannot pass through liquids → S-wave shadow zone observed → outer core must be liquid.