EVERYDAY SCIENCE

Detailed explanation-1: -In shallow water the sound waves will return very fast and in deeper water it will take more time to receive the echoes. The depth of the ocean is calculated by knowing how fast sound travels in the water (approximately 1, 500 meters per second). This method of seafloor mapping is called echosounding.

Detailed explanation-2: -The most common and fastest way of measuring ocean depth uses sound. Ships using technology called sonar, which stands for sound navigation and ranging, can map the topography of the ocean floor. The device sends sound waves to the bottom of the ocean and measures how long it takes for an echo to return.

Detailed explanation-3: -The depth of the ocean can be measured using a device called SONAR (Sound Navigation And Ranging). Sonar works by sending out sound waves and measuring how long it takes for the echo to return. If the water is shallow, sound waves that reflect off the bottom of the ocean will return faster than in deep sea.

Detailed explanation-4: -When the sound sent by a sonar reaches the seafloor several things can happen to that sound. Some of the sound may be absorbed by the seafloor. Some of the sound is almost always reflected . There are several different ways the sound can reflect.

Detailed explanation-5: -Determination of the depth of a sea using SONAR Let the time interval between transmission and reception of ultrasound signal be t and the speed of sound through sea-water be v. The total distance, 2d travelled by the ultrasound is −2d=v×t. Was this answer helpful?