How Were Water Depths and Seafloor Bathymetry (Submarine Topography)determined by the Challenger
Multiple Choice
How were water depths and seafloor bathymetry (submarine topography) determined by the Challenger surveys?
A) by early deep sea divers
B) hand thrown and retrieved weighted lead-lines
C) multi-beam, towed echo sounders
D) timing the descent of heavy bricks with sand glasses and listening for the echoes with early hydrophones
Correct Answer:

Verified
Correct Answer:
Verified
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