CK-12 Physical Science Concepts - For Middle School

(Marvins-Underground-K-12) #1

5.38. Hearing Loss http://www.ck12.org


FIGURE 5.76


These activities expose people to danger-
ously loud sounds that can cause hearing
loss.

FIGURE 5.77



  • The most common cause of hearing loss is exposure to loud sounds. Loud sounds damage hair cells in the ear
    that are needed for hearing. Louder sounds damage hair cells more quickly than softer sounds.

  • Hearing loss caused by loud sounds can be prevented by protecting the ears from loud sounds with hearing
    protectors. They keep sound waves out of the ears or reduce the amplitude of sound waves.


Vocabulary



  • hearing: Ability to sense sound energy and perceive sound.


Explore More


Watch the video about two types of hearing loss at the following URL. Then compare and contrast the two types.
http://www.careflash.com/video/hearing-loss

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