Question

How to know the depth of sea

Answer 1

Answer:

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. Echosounders can use different frequencies of sound to find out different things about the ocean

Explanation:

MARK BRAINLIEST!

Answer 2

Answer:

with the help of ECHOSOUNDERS

Explanation:

it is calculated by knowing how fast the sound travells inside the sea water