The __________ in ear senses the vibrations of sound.
None of these
The eardrum in ear senses the vibrations of sound, it sends the signals to the brain. This process is called hearing.
(a) What is the name of the strings in the human voice box which vibrate to produce sound?
(b) What makes these strings vibrate?
Fill in the following blanks with suitable words:
(a) Sounds are produced by
(b) The human voice box is called
(c) Sound cannot travel in
(d) A set of three
(e) The unit of frequency is
(f) The timet taken by an object to complete one oscillation is called
(g) The shrillness of a sound is determined by the
(h) Unpleasant sound is called
(i) Sound which is pleasing to the era is called
(j) A person having partial hearing loss can hear properly by wearing a device called hearing
Match the following:
Column I Column II
i. Larynx a. Air sacs
ii.Trachea b. Lid of larynx
iii. Alveoli c. Voice box
iv. Epiglottis d. Windpipe