Question

Q.1. Sound is a kind of
a. Work b. Energy c. Force d. None
Q.2 To and fro motion of an object is called
a. Waves b. Amplitude c. Vibration d. All of the above
Q.3 Touch a sound-producing speaker which is ON, what do you experience? Now touch it again after
switching it off. Do you feel the same? Explain.
Q.4 Name the sound-producing organ in humans.
Q.5 Describe how sound is produced by the human voice box (or larynx).
Q.6 Why are the voices of men, women & children different?
Q.7 How does a sound-making object differ from one that is silent?

Answer 1

Answer:

1. energy
2. vibration
3. at first when we touch it we feel that something is Vibrating. next time when we touch it we don't feel vibrations.
4. larynx

Answer 2

Answer:

1.b, 2.c,

3.When sound waves move through the air, each air molecule vibrates back and forth, hitting the air molecule next to it, which then also vibrates back and forth. The individual air molecules do not "travel" with the wave. They just vibrate back and forth.

When the vibrations are fast (high frequency), you hear a high note. When vibrations are slower, you hear a lower note.

4.larynx.

5.The vocal folds (vocal cords) then vibrate to use airflow from the lungs to create audible pulses that form the laryngeal sound source. The muscles of the larynx adjust the length and tension of the vocal folds to 'fine-tune' pitch and tone.

6.Second factor which brings in the difference in the voices is the length and the thickness of vocal cords. from each other due to the following factors.

7.A sound making object vibrates while a silent does not. You can feel the vibrations by touching them.

Explanation:

I hope you satisfied.... ✔️