Answer to Question 1ANS: A
The USS Stewart was the first vessel to make a continuous profile of the ocean. They had an updated
version of the Iceberg Detector and Echo Depth Sounder, a device invented after the sinking of the
Titanic. Information can be found in the section Ocean Floor Is Mapped by Bathymetry.
Answer to Question 2ANS: C
There is a prevalence of active margins in the Pacific. These are areas associated with converging
plates and are characterized by high earthquake and volcanic activity. Recall the Pacific Ring of Fire
mentioned in Chapter 3. Information can be found in the section Continental Margins May Be Active
or Passive
Plastic in Ocean
Oxisol Profile
“To confess my weakness,” Hamilton wrote when he was only fourteen, “my ambition is prevalent.” This
Fish in the Ocean
Variations in the Ocean’s Surface Temperature and Salinity with Latitude
North American temperate deciduous forest. Forest soil profile at right.