Wonder ears

Wonder ears

1. vocabulary

   • Inner: the inside part. Vibrate: to shake.IN TURN: in proper order. Section: a part. Outer: the outside part. Inmersed: to put something into a liquid. VIBRANT: full of life. Final: the last part. Movement: the act of moving. Interprete: to process. GOSSIP: informal talk about other´s people lives. Antennae: a device that sends and recieves signals.

2. main ideas

   • your ear is made up of 3 sections
     • the outer ear
       • it's also called the pinna.
         • it's the part of the ear that you can see.
           • the pinna is shaped so it can collect sound waves
             • it sends these sound waves through a narrow (estrecho) tube called the ear canal.
               • after the sound waves pass through the ear canal, they reach the eardrum.
                 • the eardrum is the last part of the outer ear.
                   • when the eardrum vibrates it passes the sound waves onto the middle ear.
     • the middle ear
       • the middle ear is a small air filled space behind the eardrum
         • it contains the ossicles, which is made up of 3 tiny bones.
           • when the eardrum is vibrated by sound, it moves these 3 tiny bones.
             • the 1st one is the hammer and it's attached to the ear drum. when it shakes it passes the vibration through the next one that is called the anvil.
               • the anvil, in turn, passes the vibration onto the stirrup, the smallest bone in the body.
     • the inner ear
       • the cochlea is the final destination of the sound waves and it's located into the inner ear.
         • the cochlea is a small snail-shaped tube containing thousands of tiny hairs immersed in fluid.
           • when the ossicles pass the vibrations onto the cochlea it makes waves in the fluid, wich moves the tiny hairs.
             • the movement of the waves creates a signal which is transmitted to your brain.
               • your brain interpretes this signals as a sound.

3. conclusion

   • LIKE A POWERFUL ANTENNAE, OUR EARS HELP US COMMUNICATE WITH THE WORLD AND ALLOW US TO LISTEN TO THE SOUNDS WE NEED TO HEAR.