Infrasound consists of sound waves with frequencies below 20 Hz. State one practical use of detecting infrasound waves.
[1]
Markscheme
4.3 Sound, ultrasound and infrasound (physics only) Questions
35 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound (physics only). Each one has a worked solution and a mark scheme showing where the marks go.