Duck quacks do echo.
It is a scientific myth that a duck's quack does not echo. Research has shown that a duck's quack does echo, but it is hard to hear because it is difficult to distinguish the quack from the echo.
There are several reasons why it is difficult to hear the echo:
The answer to this question lies not in the "animal" part but in the "noise" part. Noise is sound. Sound is mechanical energy. Sound can be reflected off surfaces with varying amounts of attenuation (loss) depending on the nature of that surface. Certainly sounds come in a variety of amplitudes (volumes) from loud to soft to almost silent. Given the basics of sound, any noise can echo if conditions support that. And just because someone might not hear the noise, that doesn't mean that a tiny signal can't echo. Many animals have better hearing than people do. And contemporary electronics can pick up stuff that no one could possibly hear. Which animal noise does not echo? Any noise made by an animal has a probability of creating and echo if there is something near enough to reflect even the smallest part of the incident sound.
There is no bird with a quack that does not echo loud enough to hear.
Many people would believe the answer to be "duck". It is a scientific myth that a duck's quack does not echo. Research has shown that a duck's quack does echo, but it is hard to hear, but not impossible to hear, because it is difficult to distinguish the quack from the echo.
There are several reasons why it is difficult to hear the echo. Echoes are produced after loud noises. Ducks quack very softly, so the reflected sound is difficult to hear. Also, a reflecting surface is needed to hear an echo. Ducks tend not to live near reflecting surfaces such as cliff faces or buildings. An echo could be heard more readily if the duck quacked whilst flying past such as surface.
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· An echo is a reflection of sound waves when they hit upon any obstacle in their path. · This property of sound is employed by many animals,birds,insects and of course,humans.Bats are the most famous ones to use echo for catching food. · The property echo is extensively used by submarines and undersea explorations.
The bouncing of a sound wave off a surface may result in an echo being heard.
no its deeper
There is a persistent urban legend that a duck's quack does not echo, and I suspect that's what you're thinking of.It's not true. No bird has a call that does not echo.http://www.straightdope.com/columns/read/1090/is-it-true-a-ducks-quack-wont-echo
A ducks quack dosent echo
A duck's quack does indeed Echo but it is just hard to hear it because, the echo would sound just like the duck's quack.
A wolf's howl doesn't have an echo because of the frequency. Also a duck's quack doesn't echo (Actually a duck's quack will echo. Google Mythbusters - they did research on this.)
A duck's quack does not echo
If the answer is supposed to be that a duck's quack cannot echo, that is entirely wrong.Duck quacks do echo.It is a scientific myth that a duck's quack does not echo. Research has shown that a duck's quack does echo, but it is hard to hear because it is difficult to distinguish the quack from the echo.There are several reasons why it is difficult to hear the echo:Echoes are produced after loud noises. Ducks quack very softly, so the reflected sound is difficult to hear.A reflecting surface is needed to hear an echo. Ducks tend not to live near reflecting surfaces such as cliff faces or buildings. An echo could be heard more readily if the duck quacked whilst flying past such as surface.
i think its a cool word. fun fact: a ducks quack doesn't echo.
Duck quacks do echo.It is a scientific myth that a duck's quack does not echo. Research has shown that a duck's quack does echo, but it is hard to hear because it is difficult to distinguish the quack from the echo.There are several reasons why it is difficult to hear the echo:Echoes are produced after loud noises. Ducks quack very softly, so the reflected sound is difficult to hear.A reflecting surface is needed to hear an echo. Ducks tend not to live near reflecting surfaces such as cliff faces or buildings. An echo could be heard more readily if the duck quacked whilst flying past such as surface.See the related links below for more information on the experiments conducted to prove that a duck's quack does indeed echo.
is a common myth that a ducks quack does not echo, however this is untrue. The University of Salford have proved that a ducks quack echoes by using a reverberation chamber. There are a number of explainations for why this myth has arised. One is that the echo of a ducks quack is usually too quiet to hear because they quack too quietly for the reflection of the sound to be heard. Another possible reason is that ducks don't quack near reflecting surfaces
This appears to be a mutation of the urban legend "A duck's quack does not echo." Which is false, by the way. If it's a sound and it's in a place where echoes are possible, then it will echo.
The purpose of a duck's beak is to allow the duck to quack. The quack sound resonates when the diaphraghm muscle contracts forcing the trapped air upwards into the oesophagus. The quacktorial gland in the beak then opens and closes to create an echo effect and therefore creating the sound we hear, commonly known as a quack. This is also why a duck's quack does not echo!
That is an urban myth. Several different researchers, and also the TV show Mythbusters, proved that a duck's quack does echo.