Eardrum and Tiny Bones

In the picture

1. 1The eardrum: a thin, tight membrane that shakes when sound reaches it
2. 2The three tiny linked bones: they carry the shaking from the eardrum to the inner ear
3. 3The spiral opening: the way into the inner ear, where the third bone passes the shaking

Examples

• A drum skin shakes when you tap it.
• A row of dominoes passes a push from one piece to the next.

Quiz: Eardrum and Tiny Bones (Age 9)

1. 1

   What is the eardrum?

   • A tiny bone that carries sound to the inner ear
   • A thin membrane that vibrates when sound reaches it
   • A spiral opening that lets sound into the ear canal
2. 2

   What do the three tiny linked bones do?

   • They stop the shaking before it reaches the inner ear
   • They carry the shaking from the inner ear back to the eardrum
   • They carry the shaking from the eardrum to the inner ear
3. 3

   Where does the third tiny bone pass the shaking?

   • Out through the ear canal
   • Back to the eardrum
   • Into the inner ear through the spiral opening

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.