Which data is used to make a sonar map of the ocean floor?
A. The time it takes for pulse to bounce from ocean floor.
B. The amount of spreading that occurs on the ocean floor.
C. The time it takes an underwear vehicle to reach the ocean.
D. The amount of light that reaches the ocean floor
A. The time it takes for pulse to bounce from ocean floor.
The correct answer is A. The time it takes for a pulse to bounce from the ocean floor.
The correct answer is A. The time it takes for a pulse to bounce from the ocean floor.
To create a sonar map of the ocean floor, scientists use a technique called echo sounding. Echo sounding involves sending out a sound pulse or signal from a device called a sonar transmitter. This sound pulse travels through the water and bounces off the ocean floor. When the signal reflects or bounces back, it is detected by a sonar receiver.
By measuring the time it takes for the pulse to travel from the sonar transmitter to the ocean floor and back, scientists can calculate the depth of the ocean floor at that specific location. This data is used to create a sonar map, also known as a bathymetric map, which shows the variation in depth of the ocean floor.
Option B, the amount of spreading that occurs on the ocean floor, is not directly used to make a sonar map of the ocean floor. Spreading occurs along mid-ocean ridges where new crust is forming, but it is not a parameter measured in echo sounding.
Option C, the time it takes an underwater vehicle to reach the ocean, is unrelated to creating a sonar map of the ocean floor. The time it takes for the underwater vehicle to reach the ocean has no impact on the sonar mapping process.
Option D, the amount of light that reaches the ocean floor, is also unrelated to creating a sonar map. Sonar mapping relies on sound waves rather than light.