Question

1.birds area of cartilage called _______ in their wind pipes.
2. The SI unit of loudness of sound is
________.
3. The pitch of a sound is determined by its ________.
4. Sound of frequency more than 20 khz are known as _________.
5. An irregular irritating sound is reformed to as ________.

Answer 1

Answer:

1. Syrinx.

2. dB (decibel)

3. Frequency

4. Ultrasonics

5. Noise