Question

How is Sonar used to determen ocean depth

Answer 1

SONAR(Sound Navigation And Ranging )

Sonar works by sending out sound waves and measuring how long it takes for the echo to return.
If the water is shallow, sound waves that reflect off the bottom of the ocean will return faster than in deep sea.

Echoes : the repetition of a sound caused by reflection of sound waves.

I hope this helps (＾▽＾)
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