Question

_______ is the use of sound waves to detect and measure objects underwater.

A. OSTM
B. Sonar
C. GIS
D. GPS

This is actually earth science. Sorry.

Answer 1

B) Sonar is the use of sound waves to detect and measure objects underwater.

Answer 2

Answer;

SONAR

-SONAR is the use of sound waves to detect and measure objects underwater.

Explanation;

-SONAR is an abbreviation for Sound Navigation and Ranging.

-It locates objects from the echo of a signal that is bounced off the object.

-It uses the echo principle by sending out sound waves underwater or through the human body to locate objects.