Question

What is SONAR? Write two applications of SONAR.​

Answer 1

Answer:

Sonar uses sound waves to 'see' in the water.

NOAA scientists primarily use sonar to develop nautical charts, locate underwater hazards to navigation, search for and map objects on the seafloor such as shipwrecks, and map the seafloor itself. There are two types of sonar—active and passive.

Explanation:

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Answer 2

Explanation:

There are two types of sonar and they are:

Active sonar: The sonar emits an acoustic signal into the water and if there is any object on the way of the signal, it gets bounced back and returns an echo to the sonar transducer. Sonar transducer measures the strength of the signal. The time taken by the emitted signal and its reception is the orientation and range of the object.

Passive sonar: This sonar is used for detecting the noise coming from the marine objects such as submarines, and other marine animals like whales. Passive sonar does not emit its own signal instead it listen to the signals that travel towards it.