(a)[2]
On Fig. 7.1, draw two arrows to indicate the directions of the vibrations.
(b)[1]
In which medium is sound unable to travel?
(c)[3]
Suggest the maximum frequency that very old people are able to hear and state what the term ultrasound means.
Physics 0625 · IGCSE · Sound
Sound — practice question
A sound wave is a longitudinal wave, and a spring is used as the model to illustrate a longitudinal wave.