| A | B |
| pitch | highness or lowness of sound |
| frequency | synonym for pitch |
| intensity | loudness or softness of sound |
| volume | synonym for intensity |
| octave | a series of 8 notes |
| decibel | measurement of volume (dB) |
| hertz | measurement of frequency (Hz) |
| pollution | too much noise is called noise______ |
| eustachian tube | tube connecting the throat to the middle ear |
| auditory nerve | nerve connecting the ear to the brain |
| middle ear | part of the ear with the smallest bones in the body |
| inner ear | part of the ear that controls balance |
| outer ear | part of the ear that collects sound from the environment |
| sound | wave energy that you can hear |
| amplify | to make louder |
| hearing aid | technology that amplifies sound to help you hear |
| cochlear implant | technology implanted in your head that stimulates the auditory nerve |