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Author Question: What type of bathymetric feature was heavily influenced by wave action at some point in its history? ... (Read 53 times)

geodog55

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on: Aug 22, 2018

What type of bathymetric feature was heavily influenced by wave action at some point in its history?
  a. Abyssal hill
  b. Seamount
  c. Guyot
  d. Trench



Question 2

What is a characteristic of the water that is expelled from hydrothermal vents?
  a. The water is colder than when entering the vent
  b. The water is enriched with metals.
  c. The water has higher concentrations of organic material
  d. The water has lower concentrations of dissolved gases



blazinlyss

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Reply #1 on: Aug 22, 2018
Answer to Question 1

ANS: C
Guyots were seamounts at some point in their history. They were tall enough to breach the sea surface.
Wave action eroded their tops until they submerged again. The result is a flat-topped seamount.
Information can be found in the section The Topography of Deep-Ocean Basins Differs from That of
the Continental Margins



Answer to Question 2

ANS: B
The water that is coming from hydrothermal vents is much warmer than the surrounding waters, but
the chemical composition is also different. It is more acidic, enriched with metals, and has higher
concentrations of dissolved gases. Information can be found in the section The Topography of Deep-
Ocean Basins Differs from That of the Continental Margins



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