Sounds of frequency HIGHER than 20,000 Hz are called:
AUltrasonic
BInfrasonic
CAudible
DSubsonic
Answer & Solution
Correct answer: A. Ultrasonic
Frequencies above the human audible upper limit (~20 kHz) are called ultrasonic. They are used in medical ultrasound, sonar, and high-frequency dog whistles. Frequencies BELOW 20 Hz are called infrasonic.
Related questions
Two identical sirens sound, one on a parked car and one on a car speeding towards you. WhaA singer's note makes a piano string sound without touching it. What is happening?Why does the speed of sound in a gas change with temperature?Sound reaches you faster through a steel rail than through the air. Why?A sound is described as periodic. What does that say about the particles of the medium?A vibrating guitar string makes a sound. What does it do to the surrounding air?Why can sound not travel across a vacuum?You drive an oscillating object far above its natural frequency. What happens to the ampli