two girls one cup outtakes
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.
the bats do not produce supersonic sounds.they produce ultrasonic sounds.Thats the reason we cant hear them
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.
Sound waves
in a way, but there are still some there, humans just cant hear them.
No, because a tree falls in the middle of the woods and there is no one around to hear it, so it can't make a sound! A sound is something you hear. It would make a noise.yes it does make a sound because if something falls it gives off sound waves. the sound waves move out further and further, but the sound waves stop after a while. just because you cant hear doesnt mean its not there......its like yelling at someone who is deaf with someone right beside you. the deaf person cant hear you but the person that's not deaf can hear you because your voice gives off sound waves!
The Moon has no atmosphere, only vacuum. There is nothing for the sound waves to travel in.
I think its the sounds that people can think they hear when they cant hear. Thats when Audiologists had to become psycic. Think if the deaf student can hear.
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.
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 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.
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.
the bats do not produce supersonic sounds.they produce ultrasonic sounds.Thats the reason we cant hear them