Why are our ears the shape they are? I know it’s something to do with catching the sound but aren’t sure.

Question: Why are our ears the shape they are? I know it's something to do with catching the sound but aren't sure.
- Keywords:
  ear,
  human body,
  senses
Asked by Kate and Peckasso :) to Chris, Josh, Rebecca, Rob, Susan on 22 Jun 2015.
- Rebecca Dewey answered on 22 Jun 2015:
  
  Absolutely! The ears are the perfect shape to focus (reflect and converge) sound waves into the ear canal for us to be able to hear the quietest, tiniest sounds possible!

Kate and Peckasso :) commented on 23 Jun 2015:

Cool, Thanks!!!! 🙂

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Question: Why are our ears the shape they are? I know it's something to do with catching the sound but aren't sure.