🎯 Common Question Types:
- Describe features of an oscilloscope trace (1–2 marks)
- Calculate distance using echo method (2–3 marks)
- Explain why sound cannot travel through a vacuum (2 marks)
- Compare ultrasound and X-rays for medical imaging (4 marks)
📝 Key Command Words:
- Describe: What you observe on the trace (taller = louder)
- Explain: Give the physics reason (amplitude increases, so more energy)
- Calculate: Show the echo formula clearly with the ÷2 step
- Compare: State one similarity AND one difference
⚠️ Common Mistakes to Avoid:
- Forgetting to divide by 2 in echo distance calculations
- Saying sound is a transverse wave — it is LONGITUDINAL
- Confusing amplitude with wavelength on oscilloscope traces
- Saying ultrasound is "safer than X-rays" without explaining WHY (non-ionising)
This exam tips covers Exam Tips within Sound Waves for GCSE Physics. Revise Sound Waves in Waves for GCSE Physics with 16 exam-style questions and 15 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 12 of 13 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Practice questions for Sound Waves
What type of wave is sound?
Describe how a sound wave is produced and how energy is transferred by a longitudinal wave.
Quick recall flashcards
What is an echo?
Reflection of sound waves from a surface
Sound wave type?
Longitudinal