Hearing depends on sound waves which vibrate the ear drum and are translated into impulses which are fed to the brain.
Yes, sound waves exist which are not audible to the human ear. Humans can hear sound waves having frequency between 20 - 20,000 Hz. Other all frequencies lie outside our hearing range and are called ultrasonic or supersonic waves.
Sound is longitudinal waves that you can hear. http://en.wikipedia.org/wiki/Longitudinal_wave
we hear them
Ultrasonic waves are sound waves with frequencies higher than what humans can hear. Sound waves have frequencies of about 20,000 to 100,000.
When two waves interact via deconstructive interference, then you would hear nothing if you stood in that exact spot. If two waves interact via constructive interference, then you would hear a sound that is the sum of both waves.
Sound waves
whale can hear ultrasonic sound waves.
when you hear things, its really sound waves. the sound waves enter your ear, then it vibrates the ear drum.
sound waves and vibrations
When we hear sound we do not feel the pushing the air becasue the sound waves are in form of comprestional waves.
Yes, sound waves exist which are not audible to the human ear. Humans can hear sound waves having frequency between 20 - 20,000 Hz. Other all frequencies lie outside our hearing range and are called ultrasonic or supersonic waves.
Sound is longitudinal waves that you can hear. http://en.wikipedia.org/wiki/Longitudinal_wave
Sound is something that travels in waves and we hear with our ears.
The waves that you hear are called sound waves - it doesn't matter whether it is emitted by a trumpet, or by any other object that you can hear.
LOUDNESS
The sound that you hear.
you can hear the sound of birds and the sound of waves washing up to the surface (: .