What term describes sound waves with a frequency higher than the upper limit of typical human hearing, generally above about 20,000 hertz?

Explanation

Ultrasonic sound refers to sound waves with a frequency higher than approximately 20,000 hertz, the generally accepted upper limit of typical human hearing, meaning these sound waves exist but cannot be consciously heard by people under normal circumstances. Many animals, including bats and dolphins, can produce and detect ultrasonic sound as part of their natural echolocation abilities. Beyond its role in nature, ultrasonic sound also has significant practical applications in fields like medical imaging and industrial cleaning equipment. Explore more Everyday Science MCQs on mcqstutor to keep practicing.