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Question
What is meant by echo depth sounding?
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Solution
The method by which the position of an obstacle hidden in water is located is known as echo depth sounding.
RELATED QUESTIONS
Define wavelength term in relation to a wave.
What is the condition necessary for an echo to be heard distinctly?
How do bats avoid obstacles in their way, when in flight?
Name two sound absorbing materials (or objects) which can make our big room less echoey.
(i) A man stands at a distance of 68 m from a cliff and fires a gun. After what time interval will he hear the echo, if the speed of sound in air is 340 ms−1?
(ii) If the man had been standing at a distance of 12 m from the cliff would he have heard a clear echo?
What is mean by the reflection of sound?
Match the following:
| 1. | Stethoscope | a. | Repeated reflections |
| 2. | Echogram | b. | Multiple reflections |
| 3. | SONAR | c. | Ultrasonic waves |
| 4. | Reverberation | d. | Speed of underwater objects |
The direction of the incident sound, the direction of reflected sound, and the normal are in different Planes.
