Ultrasonic sound refers to anything above the frequencies of audible sound, which usually refers to anything above 20,000 Hz. Ultrasonic waves have a short wavelength and a high frequency. Some dogs and animals can hear the ultrasonic waves, if you were you blow a high pitched whistle some animals would be able to hear the sound even if you couldn’t.
Question: Do ultrasonic sound waves have a short wavelength or a long wavelength?