Multiple choice

Sonar fitted in ships helps to find

  1. presence of oil in sea water

  2. presence of icebergs

  3. hotness of sea water

  4. coldness of sea water

  5. depth of sea water
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Sonar sends vibrations deep inside the sea, they touch the ground and return back and the time they take in returning back, helps in calculating the depth of the sea.

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