An echo sounder determines water depth by measuring the time it takes a sound signal to bounce off the seafloor and travel back to the instrument.

Question

Quizplus · Accepted Answer

This statement is true. An echo sounder is a type of sonar device that uses sound waves to measure water depth. It sends a sound signal or pulse down to the seafloor, which then reflects back to the instrument. By measuring the time it takes for the signal to make the round-trip, the echo sounder can calculate the water depth at that location.

An Echo Sounder Determines Water Depth by Measuring the Time