Question

sonar uses... *

o satellites to continuously send out signals containing their location and the current
time.

o an x - ray tube to generates x - rays, which are directed as a narrow beam to target the
area of interest.

o light waves focused through an aperture and reflected across several mirrors in a
submarine.

o sound waves to map underwater by measuring the time it takes for the waves to
bounce back.

3 points

Explanation:

SONAR (Sound Navigation and Ranging) operates by emitting sound waves. These waves travel through water and when they encounter an object (like the seabed or a submerged object), they bounce back (echo). By measuring the time it takes for the sound waves to bounce back, one can determine distances and map underwater areas.

Answer:

sound waves to map underwater by measuring the time it takes for the waves to bounce back.