《Wonderful Ears》Mind Map

这是一篇关于《Wonderful Ears》Mind Map的思维导图，主要内容包括：How Human Ears Work，Function of Two Ears，Animal Ears: Locations and Features。

《Wonderful Ears》Mind Map

• Animal Ears: Locations and Features
  • Animals without Obvious Outer Ears
    • Snakes: No outer ears. Sense ground - vibrating sounds via a special bone in the body.
    • Fish: No outer ears. Can detect sounds in water.
  • Animals with Unusual Outer Ears
    • Frogs: Ears inside the body. Detect sound vibrations in air and water.
    • Grasshoppers: Ears on their legs.
    • Bats: Use ears for echolocation to fly in dark caves and catch insects.
    • Owls: Hear the tiniest sounds, hunt at night.
    • Dogs: Hear sounds humans can‘t. Ears move to collect sounds.
  • Animals with Special - Shaped Outer Ears
    • Kangaroos: Big ears move front/back side to listen for enemies.
    • African Hunting Dogs: Big ears, excellent hearing.
    • Hares and Rabbits: Long outer ears point backward to listen for predators.
• Function of Two Ears
  • Help animals determine the direction of sounds.
• How Human Ears Work
  • Outer Ear
    • Collects various sounds (loud/soft, high/low, short/long).
  • Middle Ear
    • Has eardrum and tiny bones (hammer, anvil, stirrup). Sounds hit eardrum; bones vibrate like drumsticks, sending sound to the brain.
  • Inner Ear
    • Turns the sound into messages. These messages are sent along nerves to the brain. And the brain tells what the sound is.
  • Hearing Problems
    • Some people have hearing loss due to damaged ear bones or nerves, which disrupt sound transmission to the brain.