GEOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -sonar: An object-finding system that uses sound waves to determine the distance, speed of and direction to objects within its range.

Detailed explanation-3: -Sonar uses sound waves to ‘see’ in the water. Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.

Detailed explanation-4: -Ultrasonic waves are used in SONAR instead of audible sound waves.

Detailed explanation-5: -SONAR is Sound Navigation and Ranging. In this technique, ultrasonic waves are used to measure the distance, speed, and direction of underwater objects. It is used to measure the depth of a sea.