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The reflecting surface must be sufficiently smooth and shaped such that the sound is reflect back and not dispersed.
Sound travels at approx 340 metres per second and the average human brain easily can distinguish sounds that are 1/2 second apart. That means the sound must travel at least 170 metres so that the reflecting surface must be half that distance away. While a greater distance will create a more distinctive echo, the strength of the returning sound fall off rapidly (at twice the square of the distance to the reflecting surface). In normal circumstances 170 metres (= approx 500 feet) is a good distance. A cave or convex reflecting surface will allow a greater distance.
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Conditions necessary for a congruent triangle?
Conditions necessary for a congruent triangle? arethey must know the funky chicken dance
Why can you not hear the echo if you stand 20 meter away and shout towards it?
You are too close to the surface from which the sound waves are reflected. As a result you brain cannot distinguish between the original sound waves and the reflexted sound waves (the echo).
What are the necessary conditions for nationalism to develop?
A national crisis.
What are the conditions necessary for rusting?
The conditions necessary for rusting are water (or water vapour) and air, specifically Oxygen. If one condition is absent and the other is present then rusting would not occur but if both are present then rusting will occur
If Sound travels through air at 330 meters per second how long will it take a bat's cry to reach its prey and echo back if the prey is 1 meter away?
The total distance traveled by the sound wave is 2 m. At a rate of 330 m/s, it will take 0.00606 seconds for the bat to hear the echo.
Why do we hear an echo?
we hear an echo because its in our blood to hear things in a repeditive form but a lot quieter.
What does Hear Hear mean?
echo
What happens to echo after narcissus runs away from her?
echo turns into the echo we hear today.
Why can you hear me but not see me?
an echo
How do dolphins hear things?
dolpins hear through an echo
Why do we hear echoes?
we hear an echo because its in our blood to hear things in a repeditive form but a lot quieter.
What can you hear but not see and only speaks when it is spoken to?
Talking tom.Tom or talking ginger respond.
Where would you expect to hear an echo?
You would expect to hear an echo in places that have hard and flat surfaces such as canyons, mountains, empty rooms, or hallways. Sound waves bounce off these surfaces and return to the listener after a slight delay, creating the echo effect.
What animal uses echo location to hear?
a bat does
How can you stop a echo?
You can go into a stuffed small room and not hear an echo unlike moving into a new big house with no furniture! there would be a big echo!
What do you hear when sound bounces off the wall?
When sound bounces off a wall, you hear an echo. The reflection of the sound waves off the wall creates a delay in the arrival of the sound to your ears, resulting in the perception of an echo. The size, shape, and distance of the wall can affect the characteristics of the echo.
What bird has a quack that doesn't echo loud enough to hear?
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.
