Question

    The device that uses ultrasonic waves to measure the distance, direction and speed of underwater objects is called:

    A SONAR Correct Answer Incorrect Answer
    B RADAR Correct Answer Incorrect Answer
    C CRO Correct Answer Incorrect Answer
    D MASER Correct Answer Incorrect Answer

    Solution

    The device which uses ultrasonic waves to measure the distance, direction and speed of underwater objects is known as SONAR. SONAR stands for Sound Navigation and Ranging. SONAR is helpful for exploring and mapping the ocean because sound waves travel faster in water than that in air.

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