Question 1
Ocean floor topography can be estimated from space using ________.
◦ high resolution measurements of the earth's magnetic field
◦ powerful sound waves that echo to the satellite
◦ radar pulses that bounce off the ocean surface
◦ laser beams that penetrate to the sea floor
Question 2
The first systematic bathymetric measurements came on the voyage of ________.
◦
The James Caird◦
HMS Challenger ◦
The Beagle◦
The Fram