The range a person can hear depends on the age of a person and weather they have damaged their hearing by loud sounds to test how far you can hear go to the related link
For the same reason that regular sound passes through solids. A sound is just a vibration, or jolt, that's passed on from one atom (or group of atoms) to the next; so wherever there is some matter, sound can be transported.
Difference is in their frequency, audible sound waves is between 12 Hz and 20,000 Hz, Ultrasound waves is any sound that has a frequency beyond the 20,000 Hz limit
Ultrasonic and Infrasonic sound waves are waves that are not audible to human beings. The audible region contains sound waves of 16 Hz to 20,000 Hz.Infrasonic sound waves have frequencies below 16 Hz. For example, an earthquake.Ultrasonic sound waves have frequencies above 20,000 Hz. For example, x-rays.Grade 11 Physics
The term "infrared" refers to electromagnetic waves, not to sound waves.
They are known as Overtones. If they are beyond the range of human hearing, they are called ultrasound, or ultrasonic waves.
Sound waves travel through matter. Our atmosphere is a mixture of gases which is a form of matter. Sound waves will travel through our atmosphere, even if there is no human ear to receive it.
Ultraviolet rays are rays of light which are just beyond the visible spectrum for a human. These waves are shorter than the shortest waves possible for a human to see.
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
Microphones will convert sound waves into electrical signals. An ear (i..e human ear) will also convert sound waves into electrical signals.
20 hz to 20,000 Hz
Ultasound