Question

Q-1) define sound and its cause of generation?
Q-2) explain the mechanims of production of sound in human being with labelled diagram?
Q-3) how sound is produced in birds, bees and frogs? ​

Answer 1

Answer:

Ans 1: The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker. The sound source creates vibrations in the surrounding medium. As the source continues to vibrate the medium, the vibrations propagate away from the source at the speed of sound, thus forming the sound wave.

Ans 2: human being produce sound by using the voice box or larynx. the human voice box contain two ligaments known as vocal cords . sound is produced by the vibration of vocal cords. the lungs pass current of air between the two vocal cords this air makes the vocal cords vibrates and the vibrating vocal cord produce sound.

Ans 3: Located at the base of a bird's trachea, it produces sounds without the vocal folds of mammals. The sound is produced by vibrations of some or all of the membrana tympaniformis (the walls of the syrinx) and the pessulus, caused by air flowing through the syrinx. Bees generate sound not only through movement of their wings but also with their thoracic muscles. Although they use these muscles to move their wings, they can uncouple their wings to produce heat and generate acoustic signals. ... Sound waves are measured by their frequency in Hertz (Hz), or cycles per second. Frogs produce sound from the air sac below their mouth that from the outside, is seen to inflate and deflate. Air from the lungs is channeled to the air sac, which resonates to make the sound louder. The larynx is larger and more developed in males, though not significantly different from females.

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