Sound causes a window to vibrate. A person on the other side hears the sound produced by the window.
Which describes both conversions in this process?
Air pressure variations vibrate the glass; vibrating glass produces air pressure variations.
Air pressure variations heat the glass; heated glass produces electromagnetic waves.
Air particles move through the glass; glass particles then move towards the person.
Air particles carry glass across the room; moving glass particles produce nerve signals.
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.