How is ocean depth calculated by sonar? View Available Hint(s)for Part A Ocean depth is calculated by the time it takes seismic waves to make a round-trip from the ship to the seafloor. Ocean depth is calculated by sound waves sent from a satellite that record variations in the ocean surface. Ocean depth is calculated by the time it takes sound waves to travel from the ship to the seafloor and back to the ship again. Explosions created by ships create sonar waves, which then map the sea floor. Ocean depth is calculated by seismic waves that record detailed seafloor profiles. Part B What type of ocean exploration technique is the best for determining potential oil and gas reservoirs? View Available Hint(s)for Part B sonar seismic reflection survey rope satellite altimeter multibeam sonar Part C Name all of the ocean bottom features shown in the image of the Los Angeles coast produced by the multibeam sonar. View Available Hint(s)for Part C shelf, slope, rise shelf, canyons, slope, rise shelf, canyons, slope canyons, slope, rise mountains, shelf, slope Part D Satellites record slight variations on the sea surface using radar. What do these slight variations represent? View Available Hint(s)for Part D