Final answer:
b) 20,000 Hz Children can hear frequencies as high as 20,000 Hz. The range of frequencies audible to humans is 20 Hz to 20,000 Hz, and frequencies must differ by at least 1 Hz to be distinguished as separate sounds. Hearing loss, quantified in decibels, can impact how intense certain frequencies need to be to be audible.
Step-by-step explanation:
The highest frequency of sound that children can hear is 20,000 Hz. The typical range of audible frequencies for humans is from 20 Hz to 20,000 Hz, where any sound above 20,000 Hz is considered ultrasound, and those below 20 Hz are categorized as infrasound. Moreover, for humans to be able to distinguish two separate sounds, the frequencies must vary by a minimum of 1 Hz.With concerns to hearing loss, a child experiencing a 60 dB loss at 5000 Hz would require a 5000 Hz tone to be significantly more intense to be equally audible as a lower-frequency tone, such as 400 Hz.
This is reflective of how hearing sensitivity across different frequencies varies and can be affected by noise exposure. For example, a person with a hearing threshold 10 dB above normal at 100 Hz and 50 dB above normal at 4000 Hz would require the 100-Hz tone to be more intense than a 4000-Hz tone for both to be barely audible.