A spectator sits in the stands of a sports arena, 170 m away from the starting line of a race. They observe that they see the flash of the starter's pistol before they hear the sound of the gunshot. Which of the following is the correct explanation for this observation?
Light travels much faster than sound.
Sound waves slow down as they travel through the air.
The human eye has a faster reaction time than the human ear.
The sound wave suffers from reflections off the track surface before reaching the spectator.
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.