Think of the word/term that relates to the statement given below. Now fill in the boxes with the correct spellings of that word/term.

Sound navigation and ranging.

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Solution

SONAR:
SONAR stands for Sound Navigation and Ranging.
It is used to measure the depth of water, or the presence of any other object inside seas and oceans.
A set of vibrations are released from the SONAR in the water bodies.
These vibrations after reflection from the bottom surface returns to its source.
Based on the time taken for the vibrations to return and the speed of sound in water, the depth of water can be calculated.
Hence, Sound navigation and ranging - SONAR.

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