Question

1. Which part of our body vibrates when we speak?
2. How do external ears help us?
3. which animal have external ears ?
4. Name an animal that has naked eardrums.
5. what helps us judge the direction of a sound ?​

Answer 1

Answer:

1.Vocal cords

2.It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane.

3.All mammals such as elephant, deer, bear, zebra etc. have external ears.

4.naked mole-rat

5.Having two ears helps us to determine the direction of sound waves. Time lag, wave length and tone - all these factors play important parts for the brain when determining the direction of sound.