List of top Science Questions on Sound Produced by Humans

Fill in the blanks with suitable words.

1. Time taken by an object to complete one oscillation is called ___ .
2. Loudness is determined by the ___ of vibration.
3. The unit of frequency is ___.
4. Unwanted sound is called __________ .
5. Shrillness of a sound is determined by the ___ of vibration.

In the following statements, tick ‘T’ against those which are true, and ‘F’ against those which are false.

1. Sound cannot travel in vacuum. (T/F)
2. The number of oscillations per second of a vibrating object is called its time period. (T/F)
3. If the amplitude of vibration is large, sound is feeble. (T/F)
4. For human ears, the audible range is 20 Hz to 20,000 Hz. (T/F)
5. The lower the frequency of vibration, the higher is the pitch. (T/F)
6. Unwanted or unpleasant sound is termed as music. (T/F)
7. Noise pollution may cause partial hearing impairment. (T/F)

Sketch larynx and explain its function in your own words.