Not Finding Your Answer?
Post It On KidzTalk Homework Help
Post It On KidzTalk Homework Help
Report a search problem
mobile version
Copyright 2005-2024 KidzSearch.com
Ultrasound is a type of sound with a frequency higher than humans can hear. This frequency, the upper limit of human hearing, is approximately 20,000 hertz (20 kilohertz). view more...