Which data is used to make a sonar map of the ocean floor? (1 point)

Question

• The time it takes for a pulse to bounce from the ocean floor.
• The time it takes an underwater vehicle to reach the ocean floor.
• The amount of light that reaches the ocean floor.
• The amount of spreading that occurs on the ocean floor.

Answer 1

The correct answer is: The time it takes for a pulse to bounce from the ocean floor.

This method, known as sonar (Sound Navigation and Ranging), uses sound waves to map the ocean floor by measuring the time between sending out a pulse and receiving the echo that returns from the ocean floor.