A spectator sits in a sports stadium, at a distance of 170 m from a drummer. The spectator notices that they see the drummer strike the drum slightly before they hear the sound of the strike.
What is the reason for this observation?
Light waves travel much faster than sound waves.
Sound waves are reflected by the stadium walls, delaying the direct sound.
Human eyes process visual information much faster than ears process auditory information.
Sound waves require a medium to travel, which slows them down as they propagate.
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.