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Glossary
bass
—deep or low tones
cochlea
—a tube inside the inner ear that is coiled like a
snail shell; within the cochlea, waves change into signals
that the brain understands as sounds.
coiled
—wound into a spiral shape
communicate
—to share information, usually using
speech or body language
eardrum
—a thin piece of skin between the outer and
middle ear; the eardrum vibrates when sound waves hit it.
fluid
—a substance that is able to flow
signals
—electrical messages sent to the brain
trills
—musical sounds in which two notes are repeated
quickly several times
vibration
—something that moves back and forth quickly
