This exam focus covers Exam Focus within Sound Waves for GCSE Physics. Revise Sound 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 11 of 13 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 11 of 13
Practice
13 questions
Recall
15 flashcards
🎯 Exam Focus
Frequently Examined
Sound waves appear in multiple contexts in GCSE papers:
- Oscilloscope trace questions — identify amplitude, frequency, pitch, loudness from diagrams
- Ultrasound calculations — use distance = speed × time ÷ 2
- Compare sound and EM waves — sound needs a medium, EM waves do not
- Explain ultrasound for medical imaging — why safer than X-rays, how echoes build an image
Common 4-mark question: "Explain why ultrasound is preferred over X-rays for scanning a pregnant woman." — Must include: non-ionising, cannot damage DNA of foetus, same resolution at boundaries, safe to use repeatedly.