Oceanography 100 Final Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
How does heat affect density? - CORRECT ANSWER - Hot water expands
Which layer composes the plates? - CORRECT ANSWER - Lithosphere
In which tectonic setting(s) do trenches form? - CORRECT ANSWER - Convergent,
ocean-ocean, ocean-cont.
What characteristic or process drives plate motions? - CORRECT ANSWER - Sea Floor
Spreading
In what direction is the Pacific Plate moving relative to the North American plate? * -
CORRECT ANSWER - North West
At what rate does seafloor spreading occur? - CORRECT ANSWER - 2-5 cm per year
Which tectonic features form the deepest locations in the oceans? - CORRECT
ANSWER - Trenches
How old is the oldest oceanic crust? - CORRECT ANSWER - 208 Ma
In which type(s) of tectonic setting do volcanoes form? - CORRECT ANSWER -
Divergent; Convergent
In which type(s) of tectonic setting do earthquakes occur? - CORRECT ANSWER - All
, Where is the oldest oceanic crust? - CORRECT ANSWER - farthest from mid-ocean
ridges
Based on current plate tectonic motion, how is the size of the Pacific changing? - CORRECT
ANSWER - smaller
What type of plate boundary do we live on? - CORRECT ANSWER - transform
What type of plate boundary occurs north of Mendocino, CA? - CORRECT ANSWER -
Transform
What type of continental margin do we live on? * - CORRECT ANSWER - Continental-
Oceanic
What is lithogenous sediment? - CORRECT ANSWER - Land Sediment (rocks, pebbles)
How does sea level effect the distribution of marine sedimentary rocks? - CORRECT
ANSWER - displaced bc of shrinking sea levels
Within the US where is the continental shelf widest? - CORRECT ANSWER - Coastline
Which sediment size is more common in the deep oceans? - CORRECT ANSWER -
Pelagic (fine sand)
What charge does the oxygen atom in the water molecule have? - CORRECT ANSWER -
Positive
Which phase of water is most energetic? - CORRECT ANSWER - gas
ACTUAL Exam Questions and CORRECT
Answers
How does heat affect density? - CORRECT ANSWER - Hot water expands
Which layer composes the plates? - CORRECT ANSWER - Lithosphere
In which tectonic setting(s) do trenches form? - CORRECT ANSWER - Convergent,
ocean-ocean, ocean-cont.
What characteristic or process drives plate motions? - CORRECT ANSWER - Sea Floor
Spreading
In what direction is the Pacific Plate moving relative to the North American plate? * -
CORRECT ANSWER - North West
At what rate does seafloor spreading occur? - CORRECT ANSWER - 2-5 cm per year
Which tectonic features form the deepest locations in the oceans? - CORRECT
ANSWER - Trenches
How old is the oldest oceanic crust? - CORRECT ANSWER - 208 Ma
In which type(s) of tectonic setting do volcanoes form? - CORRECT ANSWER -
Divergent; Convergent
In which type(s) of tectonic setting do earthquakes occur? - CORRECT ANSWER - All
, Where is the oldest oceanic crust? - CORRECT ANSWER - farthest from mid-ocean
ridges
Based on current plate tectonic motion, how is the size of the Pacific changing? - CORRECT
ANSWER - smaller
What type of plate boundary do we live on? - CORRECT ANSWER - transform
What type of plate boundary occurs north of Mendocino, CA? - CORRECT ANSWER -
Transform
What type of continental margin do we live on? * - CORRECT ANSWER - Continental-
Oceanic
What is lithogenous sediment? - CORRECT ANSWER - Land Sediment (rocks, pebbles)
How does sea level effect the distribution of marine sedimentary rocks? - CORRECT
ANSWER - displaced bc of shrinking sea levels
Within the US where is the continental shelf widest? - CORRECT ANSWER - Coastline
Which sediment size is more common in the deep oceans? - CORRECT ANSWER -
Pelagic (fine sand)
What charge does the oxygen atom in the water molecule have? - CORRECT ANSWER -
Positive
Which phase of water is most energetic? - CORRECT ANSWER - gas
