Why do people sometimes feel their ears ‘pop’ during air travel or when driving up a steep mountain?
ABecause changing air pressure causes the eardrum to adjust as air moves through the Eustachian tube
BBecause sound waves become trapped in the ear canal
CBecause temperature changes freeze fluid in the ear
DBecause gravity decreases at higher altitude
Explanation
The sensation of ears popping during air travel or rapid changes in elevation occurs as changing external air pressure causes a pressure difference across the eardrum, which is equalized as air moves through the narrow Eustachian tube connecting the middle ear to the back of the throat. This equalization causes the small popping or clicking sensation, and swallowing, yawning, or chewing gum can help open the Eustachian tube to speed up the process. If the tube becomes blocked, such as during a cold, this equalization can become uncomfortable or delayed. Explore more Everyday Science MCQs on mcqstutor to keep practicing.
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