How do some animals hear ultrasound and infrasound? (Not how they use it and not how it is made)
Answers
Answer:
Animals such as bats and dolphins send out ultrasound waves and use their echoes, or reflected waves, to identify the locations of objects they cannot see. This is called echolocation. Animals use echolocation to find prey and avoid running into objects in the dark.
Infrasound can be caused by many different sources—storms, winds, earthquakes, animals, and even wind turbines can produce infrasound. Elephants use infrasound to communicate over long distances; since low frequency sounds travel farther than high frequency ones, infrasound is ideal for communicating from far away.
and
Ultrasound is very high-pitched sound. We cannot hear ultrasound (it has a frequency above 20,000 Hz, the upper limit of human hearing). However animals, such as dogs, bats, and dolphins, can hear these very high-pitched sounds, means they have a ability to hear a frequency sound above 20,000 Hz........