Available Answers

1. 1.

   Which part of our body vibrates when we speak?
2. 2.

   How do external ears help us?
3. 3.

   Which animals have external ears?
4. 4.

   Name an animal that has naked eardrums.

5. 5.

   What helps us judge the direction of a sound?
6. 6.

   Fill in the blanks.

   1. The buzzing sound of insects comes from vibrating __________________.
   2. The sharpness of the sound made by a string depends on its ___________________.
   3. In a flute, sound is produced by the vibrations of _____________________.
   4. Bees feel vibrations with their _________________.
   5. Fish feel vibrations through their ____________________.