Question

Infrasounds _____.

can be used to view internal organs
are sounds with frequencies below 20 Hz
are sounds with frequencies above 20,000 Hz
travel in transverse waves

Answer 1

Infra sounds are sounds with frequencies below 20 Hz.The popular concept that infra sounds are in audible holds false

Step-by-step explanation:

• Some example of Infrasounds are- some animals such as whales, elephants and giraffes which communicate with each other using infrasound over long distances.
• Various natural phenomenon such as Avalanches, volcanoes, earthquakes, ocean waves, water falls and meteors also generate infrasonic waves
• Infrasound, is sound that is lower in frequency than 20 Hz or cycles per second.
• Even the human body can generate mechanical vibrations at very low frequencies, which are known as the infrasonic waves. Such low-frequency vibrations/infrasonic waves are produced by physiological processes—such as heartbeats, respiratory movements, blood flow in vessels, and other processes.