science sound test
Terms
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- pinna
- visible part of the outer ear. It collects sound and directs it into the auditory canal
- auditory canal
- the tube through which sound travels to the eardrum
- sonar
- (Sound Navigation and Ranging)a way of locating underwater objects by means of sound waves reflected from or produced by the object
- absorbed
- the act or process of being soaked up;to take in without echo
- waves
- regular disturbances caused by bumping molecules
- frequence
- the number of timesan object vibrates in a given amount of time
- pitch
- the way a person perceives the frequency
- ultrasonic
- sound waves with frequencies higher then the range or limits of human hearing
- cochlea
- a spiral-shaped, fluid-filled structure in the inner ear; it is lined with tiny hairs that move when vibrated and cause a nerve impulse to form
- semicircular canals
- three loops of the fluid-filled tubes that are attached to the cochlea; They help us with our sense of balance
- eardrum
- a thick membrane that vibrates when sound waves reach it
- vibration
- rapid, back-and-forth movement that produces sound
- volume
- how loud or soft a sound is
- auditory nerve
- carries electro-chemical signals from the inner ear (the cochlea) to the brain
- eustachian tube
- a tube that connects the middle ear to the back of the nose; it equalizes the pressure between the middle ear and the air outside
- hammer
- a tiny bone that passes vibrations from the eardrum to the anvil
- anvil
- a tiny bone that passes vibrations from the eardrum to the stirrup