PDR

question 24

Multiple Choice

PDR

• A)cumulative plot of area versus depth or elevation
• B)device used for side-scan sonar
• C)measurement of ocean depth and seafloor topography
• D)used echo soundings in 1952 to identify mid-ocean ridge in South Atlantic
• E)used to determine shape and position ofBoundaries
• F)used to map ocean floor from space
• G)uses high frequency sound waves to measure ocean depth

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