What is echo? Give its two applications
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echo can be defined as reflection of sound which is only possible in aleast distance of almost 27...m something
it is used to measure the depth of sea water and also for measuring heart bps
MARK AS BRAINLIST PLS!!!!!!
it is used to measure the depth of sea water and also for measuring heart bps
MARK AS BRAINLIST PLS!!!!!!
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What is echo ?
Answer :
If you stand in front of a hill and light a firecracker, you will hear its sound twice. First you will hear the sound coming directly from the firecracker, and then you will hear its sound reflected off the hill.
The sound that is heard after the first sound due to the reflection of sound at a surface, is called echo. You must have heard your voice echoed in large empty halls also.
It is happening so because of the reflection of sound of your own.
Applications :
1) Nature had equipped animals such as bats and porpoises with mechanism by which day find their distance from an object using echos.
2) To measure the depth of the sea
Answer :
If you stand in front of a hill and light a firecracker, you will hear its sound twice. First you will hear the sound coming directly from the firecracker, and then you will hear its sound reflected off the hill.
The sound that is heard after the first sound due to the reflection of sound at a surface, is called echo. You must have heard your voice echoed in large empty halls also.
It is happening so because of the reflection of sound of your own.
Applications :
1) Nature had equipped animals such as bats and porpoises with mechanism by which day find their distance from an object using echos.
2) To measure the depth of the sea
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