tis is a question from st.7th school student
2007-02-17 16:33:25 · 10 answers · asked by Dibakar S 1 in Education & Reference ➔ Homework Help
It is a reflection of sound, that we can only hear if the boundary that it is reflecting off of is at least 16.2 meters (or 53 feet) from the sound source and has to have a room/ cave (or whatever) tempurature of around 20 celius (68 Fahrenheit).
Almost any hard surface will reflect sound, but we won't hear it as an echo until the distance/ temp thing is just right.
2007-02-17 16:49:10 · answer #1 · answered by silligrl357 4 · 0⤊ 0⤋
How Is An Echo Produced
2016-11-11 01:51:30 · answer #2 · answered by lubin 4 · 0⤊ 0⤋
Sound waves only travel at between 7 and 8 hundred miles per hour....Pretty slow in the grand scheme of things. When a sound is generated that echoes, what is really happening is you hear the sound as it happens, and then the sound travels to a surface that reflects it back to you, and you hear it again. The further the distance of the reflecting surface, the longer the delay of the echo.
Hope this helps.
2007-02-17 16:45:54 · answer #3 · answered by W3TOD 2 · 0⤊ 0⤋
Echoes arise by reflection of sound. Any hard, reasonably flat surface will do. There is a place in the US Capitol where you can hear clearly someone speaking at a particular point some distance away; the sound echoes off the ceiling of the room.
2007-02-17 16:42:48 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Echoes are produced by the reflection of wave sound
2007-02-17 16:44:26 · answer #5 · answered by Anonymous · 0⤊ 0⤋
echoes produced by reflection of sound/wave and felection reflected by another.
for example if someone speaks in the cave or in between two walls.
2007-02-17 16:38:18 · answer #6 · answered by nando 1 · 0⤊ 0⤋
i am a st.8 school student.
echoes are produced by striking of sound from one opaque object to another.
2007-02-17 17:05:21 · answer #7 · answered by kgvarshini 3 · 0⤊ 0⤋
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I think that the sound waves can bounce off of certain walls and reflect back to you.
2016-03-29 02:11:43 · answer #8 · answered by Anonymous · 0⤊ 0⤋
hey even I'm in 7th when i know its due to reflection of sound waves..... why don't u know it??
2007-02-17 20:11:30 · answer #9 · answered by Anonymous · 0⤊ 0⤋
sound waves bounce off of an object and are projected back to you....
2007-02-17 16:49:57 · answer #10 · answered by frecklegirl145 3 · 0⤊ 0⤋