Question

Which is vibrating when the following sounds are produced

• A. the buzzing of a bee
• B. the sound of a flute
• C. the sound of a tuning fork
• D. the sound of a sitar

Answer 1

Answer: (A), (B), (C), (D)

the sound of a sitar

The explanation for the correct options:

Sound:

1. A sound is a form of energy produced by vibrations.
2. When an object vibrates, the surrounding air molecules move.
3. These molecules collide with molecules nearby, causing them to vibrate as well.

In the case of option A,

1. Bees and mosquitos use their wings to produce loud buzzing noises. They can move their feathers at such fast speeds that the sound of buzzing and vibrations may be heard.
2. The high-frequency fluffing of their wings allows air to pass through them.

In the case of option B,

1. The sound produced by a woodwind instrument is produced by a vibrating column of air within the instrument.
2. This column of air is made to vibrate by the musician in one of three different ways: as air is blasted throughout the instrument's top, across a solo reed, or across two reeds.

In the case of option C,

1. A tuning fork is a gadget with two prongs attached to a single handle.
2. The prongs vibrate and create noises that interfere, resulting in a constant frequency beat.

In the case of option D,

1. The sitar is a musical instrument with varying string thicknesses. The performer plucks the strings in such a way that the desired melody is produced.
2. The vibration of the stretched instrument's strings produces the sound.

Hence, all options are correct.