How Were Water Depths and Seafloor Bathymetry (Submarine Topography) Determined

question 29

Multiple Choice

How were water depths and seafloor bathymetry (submarine topography) determined by the Challenger surveys?

• A) by early deep sea divers
• B) multi- beam, towed echo sounders
• C) timing the descent of heavy bricks with sand glasses and listening for the echoes with early hydrophones
• D) hand thrown and retrieved weighted lead- lines

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Definitions:

Moral Hazard

The risk that one party to a contract can change their behavior to the detriment of another party, knowing that they won't have to bear the full consequences of their actions.

Piece-rate Garment Worker

A worker in the garment industry who is paid for each piece produced, rather than receiving an hourly wage.

Hourly Salesman

A salesperson who is compensated based on the number of hours worked, rather than commission on sales made.

Moral Hazard

A situation where one party is inclined to take risks because the negative consequences of the risk will be borne by another party.