SPANGLER SCIENCE

SENSORY- HEARING/EAR

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Function: Collect sound from surrounding area to channel and convert into electrical impulses for the brain to interpret.

* A sensory organ.           

* Hearing is response to sound waves.

* Part of the Nervous system.


Parts:

OUTER EAR:  Funnel

-gathers sound waves and funnels into the middle ear.

MIDDLE EAR:  Eardrum-entrance of the middle ear.

vibrates due to sound then sets off vibration to occur with three middle ear bones.

   3 bones: Hammer, Anvil & Stirrup

vibrations make each vibrate and set off the next. Named by their shapes.

  Connected to nose by Eustachian tube.  

INNER EAR:  COCHLEA

-vibrations create waves/tappings for the neurons to bring

info to the brain to interpret.

-snail tube shaped. fluid-filled to respond to sound waves.

          SEMICIRCULAR CANALS- loops above the cochlea to help with balance. Fluid-filled that reacts                        to movement and send info to the brain to interpret and adapt . -Adjustment to position                        of the head.

*STRUCTURED TO RECEIVE VIBRATIONS TO HEAR.    (CSS 5g)


SOUND: Produced by pushes of air. Waves sent away from source of sound (ripple effect).

Travels through gases (air), liquid, and solids.  (MATTER-8)


Doppler Effect- pitch of sound changes with distance.

When moves to you=pulses faster and pitch higher.

When moves away from you= pulses slower and pitch lower.

*Used for sound effects of LightSaber in Star Wars Movies.


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W. T. EICH INTERMEDIATE