A hearing test measures the highest frequency of sound that a person can hear.
The Figure shows how the typical highest frequency a person can hear changes with age.
Figure

Describe how the highest frequency a person can hear changes with age.
Use data from the Figure in your answer.
Explain why the human ear can only detect sounds within a limited range of frequencies.
Suggest one reason why the highest frequency a person can hear decreases with age.
A 15-year-old and a 65-year-old both listen to a sound with a frequency of 12 kHz12\ \text{kHz}12 kHz.
Use the Figure to explain which of them can hear the sound.
52 exam-style questions on OCR GCSE Physics 5.1 Wave behaviour, covering 5.1.1 Describing wave motion, 5.1.2 Wavelength and frequency, 5.1.3 Wave speed, frequency and wavelength, 5.1.4 Wave speed problems, 5.1.5 Transverse and longitudinal waves, 5.1.6 Sound waves crossing between media, 5.1.7 Reflection, transmission and absorption at interfaces, 5.1.8 Sound waves and vibrations in solids, 5.1.9 Frequency range and human hearing, 5.1.10 Modelling waves with water ripples and sound, and 5.1.11 Evidence that the wave travels, not the medium. Each one has a worked solution and a mark scheme showing where the marks go.